JP2000148227A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the display device with a simulation function which can directly fetch data only to be displayed on a display device not through a controller like logging data of control equipment and virtually simulate the execution of a control program by the controller. SOLUTION: The display device 30 has a slave function which is interposed between the controller 10 and controlled equipment, and which transmits instructions on the side of the controller 10 accompanying the execution of a control program to the controlled equipment, and which also transmittes the execution results on the side of the controlled equipment corresponding to the instructions to the controller. Transmit data from the controlled equipment that the controller 10 is not concerned in are displayed on the monitor of the display arithmetic unit 37 of the display device 30 without being transmitted to the controller 10. The display device 30 makes a simulation display of the execution results of the controlled equipment in response to the instructions of the controller 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a control device system, in which a command from a control device accompanying a control program execution is interposed between the control device and the control target device. The present invention relates to a display device having a slave function of transmitting a command and an execution result of the control target device for the command to a control device.

[0002]

2. Description of the Related Art Conventionally, in a control equipment system, units such as a PLC (programmable logic controller), a personal computer, and a microcomputer generally control an execution unit such as an I / O or an actuator according to a control program. ,
I have control.

In recent years, as control devices have become larger and more sophisticated, the number of devices to be controlled has increased, and their speed has also been required.

Therefore, the control which has been executed by one control device (control unit) is distributed to a plurality of control devices for each function, and these are connected by a network to reduce the load on each control device. In addition, there has been proposed a system capable of maintaining and improving high performance even when the number of devices to be controlled increases.

On the other hand, in the control system, the state of the control equipment,
A display device that confirms settings and the like and displays a message based on the state thereof to a control system, a control device designer, an operator, or the like has become indispensable.

[0006] Among them, for example, data of a control device which changes every moment, for example, generally called logging data, for example, a current temperature value of a temperature control unit, etc., is taken into a display device and displayed as a graph. Has also been done.

[0007]

By the way, the logging data displayed on the display device is generally only for the operator to monitor the state of the control device system.

However, in the conventional control device system, the control device is involved in all the data exchange even if the data is only displayed on the display device as described above.

For example, when a change in the state of a control device is displayed as log data on a display device, the control device once fetches data into an internal memory in the device and passes it to the display device even when the control device is not involved. .

Therefore, there is a problem that the load on the arithmetic unit (CPU) of the control device is unnecessarily increased.

Conventionally, when simulating a control program for debugging the control program or the like, processing has been performed in a software manner using a personal computer or a workstation.

However, a recent control system is not only composed of a control device such as a PLC and an I / O which is a control device. In the meantime, a command of the control device is transmitted to the control device and the control device is controlled by the control device. The system is complicated when, for example, a slave that transmits a state to a control device is interposed. In such a case, a synchronization process for communication must be performed between the control device and the slave, and complicated software and hardware having high-speed processing capability are required.

Therefore, there is a problem that the burden of the simulation is large.

In view of the above, the present invention directly takes in data, such as logging data of a control device, which is only displayed on a display device without involving the control device, without passing through the control device, and executes the control program in the control device. It is an object of the present invention to provide a display device having a simulation function capable of performing virtual display.

[0015]

In order to achieve the above object, the present invention is configured as described above.

In other words, according to the first aspect of the present invention, a command on the control device side accompanying the execution of the control program is transmitted to the control target device via the control device and the control target device, and the control target device side for the command is transmitted. In the display device having the slave function of transmitting the execution result of the control target device to the control device, the execution result monitor display means monitors and displays the execution result of the control target device by its own process without passing through the control device.

According to the second aspect of the present invention, a command on the control device side accompanying the execution of the control program is transmitted between the control device and the control target device to the control target device.
In a display device having a slave function of transmitting an execution result of the controlled device to the control device in response to the instruction, an execution result simulation display unit simulates an execution result of the controlled device in response to the instruction of the control device. .

According to the third aspect of the present invention, there is provided the second aspect.
In the invention described above, the execution result simulation display means simulates and displays the execution result with a delay time before the execution of the controlled device.

According to the fourth aspect of the present invention, there is provided the second aspect.
In the invention described above, the execution result simulation display means has a control program delay execution means for executing the control program with a delay.

Further, according to the invention described in claim 5, according to claim 2,
In the invention described above, the execution result simulation display means displays an error if an inconsistency occurs in the execution result during execution of the control program.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the display device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing a first embodiment of a control device system configured by applying a display device according to the present invention.

In the control device system of the embodiment shown in FIG. 1, the display device 30 has a slave function of transmitting a command from the control device 10 to the control device and transmitting the state of the control device to the control device 10. I have.

That is, in FIG. 1, the I / O bus 20
Has an I / O (master) unit 11 and a control (CPU)
The control device 10 including the unit 12 and the high function unit 13 and the display device 30 are connected.

Here, the I / O constituting the control device 10
The (master) unit 11 collects input data on the control device from the display device 30 by communication with the display device 30 and outputs output data on the control device to the display device 30.

The control (CP
The U) unit 11 forms the center of the control device 10, and controls a device to be controlled by executing a user program.

The high function unit 13 performs various high function calculations.

On the other hand, the display device 30 is a stand-alone display device in which the display function and the slave function of the control device are integrated, and in this embodiment, the communication I / F circuit 31 connected to the I / O bus 20 , A communication unit memory 33, a buffer RAM (buffer RAM (A)) 34 for storing data from the control device 10 acquired by the display device 30 through communication, data of a device to be controlled, and the like.
A communication computing device 36 for integrally controlling the communication operation of the display device; a display computing device 37 for totally controlling the display operation of the display device 30;
A buffer RAM (buffer RAM) that is a shared memory of the bus control circuits 39 and 40, the communication operation device 36, and the display operation device 37, and stores input / output data of a device to be controlled.
(B)) 41, timer / counter 42, lamp 4 used for simulation display of control program
3. A display memory 44 in which display data of the display 45 is stored, a display 45 in which data of a control device, such as logging data, which changes every moment, is displayed, and an alarm sound is output when performing a simulation display. Buzzer 46, an input unit 47 including various switches and various function keys such as a mechanical key switch and a touch switch for a simulation display, and a parallel I / O-I / F circuit connected to a control device to be controlled. 35.

Here, the communication I / F circuit 31, the communication section memory 33, the communication arithmetic unit 36, the buffer RAM (buffer RAM (A)) 34, the parallel I / O-I / F circuit 3
5 is connected via the CPU bus 32, and the communication arithmetic unit 36 and the display arithmetic unit 37 are connected by transmission lines 52 and 53 of a buffer RAM busy signal, respectively, and the buffer RAM (buffer RAM (B) ) 41, the bus control circuits 39 and 40 are connected via the CPU bus 54, and the display operation device 37, the bus control circuit 40, the timer
The CPU bus 38 connects between the counter 42, the lamp 43, the display memory 44, the display 45, the buzzer 46, and the input unit 47.
Connected through.

By the way, the display device 30 shown in FIG. 1 is characterized in that a communication operation device 36 is provided, and logging data and the like of control equipment not involving the control device 10 are transmitted to the communication operation device 36.
Is transmitted directly to the display operation device 37 to reduce the load on the control device 10 and, at the same time, to simulate and debug the control program on the display device 30.

For this purpose, a buffer RAM (buffer RAM (B)) 41, which is a shared memory of the communication arithmetic unit 36 and the display arithmetic unit 37, is provided, and access to the buffer RAM (buffer RAM (B)) 41 is arbitrated. Therefore, the following configuration is adopted.

(1) The display arithmetic unit 37 is a buffer RA
To access M (buffer RAM (B)) 41,
The display operation device 37 outputs an access request signal to the communication operation device 36, and the communication operation device 36 responds to the display operation device 37 with a buffer RAM busy signal (buffer RAM use permission signal). ) 52,
The buffer RAM busy signal 53 from the display arithmetic unit 37
To receive.

As a result, the bus control circuit 40 operates the buffer RAM (buffer RAM) of the display arithmetic unit 37.
(B)) Access to 41 is permitted.

(2) If the communication arithmetic unit 36 has a buffer RA
To access M (buffer RAM (B)) 41,
Since the communication arithmetic unit 36 can access the buffer RAM busy signal 53 from the display arithmetic unit 37 except when the buffer RAM busy signal 53 is being received, the bus control circuit 39 does not operate except the buffer RAM busy signal 53 from the display arithmetic unit 37. Buffer RAM (Buffer RAM (B)) 41 of the communication arithmetic unit 36
Allow access to.

In FIG. 1, the display device 30 may be constituted as one unit, or the communication arithmetic device 3
6 and the display calculation device 37 may be unitized. In that case, the buffer RAM (buffer RAM (B)) 41, which is a shared memory, may be in either unit.

The above is the configuration. Next, the operation will be described.

FIG. 2 shows a communication arithmetic unit 36 when the display device 30 shown in FIG. 1 performs a slave function of transmitting a command from the control device 10 to the control device and transmitting the state of the control device to the control device 10. 6 is a flowchart showing the processing procedure of FIG. The communication arithmetic unit 36 is a parallel I / O-I / F
The input data for the control device is collected via the circuit 35, and the output data for the control device is output to the control device.

When the program is started in FIG. 2, first, the control device 10 checks whether there is a command to the control device (step 100).

If there is no command from the control device 10 to the control device (NO in step 100), the process proceeds to step 108, but if there is a command from the control device 10 to the control device (step 100). YES), the contents of the received instruction are stored in a buffer RAM (buffer RAM).
(A)) is written into 34 (step 102).

Next, the execution of the command is transmitted to the control device corresponding to the received command (step 104). And
The execution of the instruction transmitted to the corresponding control device is written in the buffer RAM (buffer RAM (B)) 41, which is a shared memory (step 106).

When the execution of the command is transmitted to the control device corresponding to the received command, the control device checks whether there is a signal (step 108).

Here, if there is no signal from the control device (NO in step 108), other processing (step 11)
8) and return to step 100. If there is a signal from the control device (YES in step 108), the content of the received signal is stored in a buffer RAM (buffer RAM (A)).
34 (step 110), and further to a shared buffer RAM (buffer RAM (B)) 41 (step 112).

Next, the content of the received signal is
It is checked whether feedback to 0 is necessary (step 114).

If the received signal does not require feedback to the control device 10 such as logging data (NO in step 114), another process (step 118) is performed and the process returns to step 100. Apparatus 10
If you need feedback to
If YES in step 4, the signal received from the control device is transmitted to control device 10 (step 116). Then, another process (step 118) is performed, and the process returns to step 100.

As described above, in the processing shown in FIG. 2, only signals that need to be fed back to the control device 10 out of the signals received from the control device are transmitted to the control device 10. Can be reduced, and the speed of the control device system can be increased.

While the communication arithmetic unit 36 is performing the processing shown in FIG. 2, the display arithmetic unit 37 is a buffer RAM (buffer RAM (B)) 4 which is a shared memory.
The logging data and the like are displayed based on the data written in 1.

In this embodiment, the display device 30
Can also be used as a simulation device for control program debugging.

In this embodiment, the display device 30
Is used as a simulation device for control program debugging in the following points.

(1) By displaying the operation of the control device by simulation, it can be used as a control program simulation device. In addition, the load on the software of the simulation device can be significantly reduced as compared with the conventional simulation device.

(2) At the time of display, a more accurate simulation can be performed by incorporating a delay time factor into the execution operation of the controlled object.

The time required for the operation of the electric control device can be calculated on a desk based on the results so far. However, the mechanical control device such as a motor receives an instruction from the control device and starts execution. There is a time lag until.

Therefore, in the present embodiment, at the time of simulation debugging, the operation time of the controlled device has a delay time, and the real time from when the controlled device receives an instruction from the control device to when the instruction is started is considered. And simulate.

(3) Since the delay time can be estimated for each control device (individually even in the same format), a simulation more suitable for an actual control system can be obtained.

That is, when setting the delay time, a delay time is set for each control target control device so that the same device can be set individually. This is because, even with the same device, the delay time may vary depending on the operating conditions, usage conditions, environmental conditions, and the like.

(4) The control program is debugged by simulation display with the program execution time sufficiently delayed.

As described above, even when the simulation taking into account the delay is executed, the actual execution time of the control program is on the order of milliseconds or microseconds, so even if the simulation result is displayed at the actual execution speed. It cannot be confirmed by human eyes.

Therefore, in the present embodiment, for example, the execution time is delayed by 1000 times the actual length,
It is displayed for each step. Therefore, the program creator can accurately check whether there is any operation other than the one intended.

(5) If a contradiction is detected in the simulation, an error is displayed. In addition, the reason for the error is shown to the extent that it can be understood.

When the simulation function is being executed, inconsistencies may occur. In this case, the conventional simulation device could display the error and the type of the error, but could not display the cause of the error. This is because the cause of the error could not be determined.

However, in such a display method, it takes time to specify the cause of the error. Therefore, in the present embodiment, the cause is displayed within a known range to help identify the cause of the error. Here, the cause of the understandable range may be, for example, information that narrows the range, such as “There is a possibility of...” Or “There is no possibility of...”. This is because it helps identify the cause rather than showing nothing.

Hereinafter, a processing procedure when the display device 30 is used as a simulation device of a control device system will be described.

In FIG. 3, when the program starts, it is first checked whether or not the delay speed of the control device has been changed (step 140).

As described above, since a mechanical control device such as a motor has a time lag between receiving a command from the control device and starting the command execution, such a time lag is considered as a delay time, It is intended to perform an accurate simulation by giving a delay time to the execution time of the device.

Here, if the delay speed of the control device has not been changed (NO in step 140), step 14
When the delay speed of the control device is changed (YES in step 140), the delay speed of the control device is set to the changed value by operating the input unit 47 (step 142).

Next, it is checked whether or not the display speed of the simulation has been changed (step 144).

As described above, since the actual execution time of the control program is as fast as milliseconds or microseconds, even if the simulation result is monitored at the actual execution speed, it is confirmed by the human eye. It is impossible. Therefore, the display speed of the simulation is delayed to 1/1000 (increased to 1000 times the actual time) so that the simulation can be confirmed by the human eyes.

If the display speed of the simulation is not changed (NO in step 144), the process proceeds to step 148. If the display speed of the simulation is changed (YES in step 144), the simulation is started. The display speed is set to the changed value (step 146).

Next, it is checked whether or not the simulation start switch has been pressed (step 148).

Here, if the simulation start switch has not been pressed (NO in step 148), another process (step 150) is performed and the process returns to step 140. If the simulation start switch has been pressed, (YES in step 148), the control unit 10 transmits the request to the communication arithmetic unit 36 to request the execution of the control program (step 152).

Next, a buffer RAM as a shared memory
(Buffer RAM (B)) 41 is checked (step 154).

Here, the communication arithmetic unit 36 checks whether there is an error signal (step 156). If it is determined that there is an error signal from the communication arithmetic unit 36 (YES in step 156), the flow advances to step 162. However, when it is determined that there is no error signal from the communication arithmetic unit 36 (NO in step 156), it is further checked whether there is a command from the control device 10 (step 158).

If there is no command from control device 10 (NO in step 158), other processing (step 1)
60), and returns to the process of step 156. If there is an instruction from the control device 10 (YE in step 158)
S), proceed to step 180 in FIG.

If it is determined that the communication arithmetic unit 36 has an error signal (YES in step 156),
Buffer RAM that is a shared memory (buffer RAM
(B)) 41 is checked to grasp and display the contents of the error (step 162).

Then, it is checked whether the retry switch has been pressed (step 164). If the retry switch has been pressed (YES in step 164), the process returns to step 152.

If the retry switch has not been pressed (NO in step 164), it is checked whether a predetermined time has elapsed (step 166). If the predetermined time has not elapsed (step 166). (NO), perform another process (step 168), and return to the process of step 164. However, if the predetermined time has elapsed (YES in step 166), perform another process (step 170) and perform the process of step 140. Return to

Next, the processing when there is an instruction from the control device 10 (YES in step 158) will be described with reference to FIG.

In this process, first, the contents of the buffer RAM (buffer RAM (B)) 41, which is a shared memory, is written into the display memory 44 (step 180). And
The operation of the control device corresponding to the command from the control device 10 is extracted from the display memory 44 (step 182). That is, the delay time is considered, and the delay time is reflected in the operation time of the control device.

Next, it is checked whether or not the extracted operation is normal as a program (step 184).

Here, if the extracted operation is not normal as a program (NO in step 184), the process proceeds to step 194. If the extracted operation is normal as a program (YES in step 184), the extraction is performed. The extracted operation is added to the command from the corresponding control device and written in the display unit memory 44 (step 186), and the extracted operation is stored in a buffer RAM (buffer RA) which is a shared memory.
M (B)) 41 (step 188).

Next, it is checked whether or not the instruction from the control device 10 has ended (step 190). If it is not the end (NO in step 190), another process (step 19)
2) is performed and the process returns to step 180. If the process is completed (YES in step 190), the process proceeds to step 198 and subsequent processes which are debugging processes.

On the other hand, if the extracted operation is not normal as a program (NO in step 184), which instruction and why the program is abnormal is added to the corresponding instruction and written into display memory 44 (step 194). ).

As described above, inconsistency may occur when the simulation function is executed. In this case, the conventional simulation device could display the error and the type of the error, but could not display the cause of the error. This is because the cause of the error could not be determined.

However, in such a display method, it takes time to specify the cause of the error. Therefore, in the present embodiment, the cause is displayed within a known range to help identify the cause of the error. Here, the cause of the understandable range may be, for example, information that narrows the range, such as “There is a possibility of...” Or “There is no possibility of...”. This is because it helps identify the cause rather than showing nothing.

Next, the extracted abnormal operation is written into the buffer RAM (buffer RAM (B)) 41 which is a shared memory (step 196).

The processing from step 140 to step 196 is the simulation data fetching processing, and the debugging processing starts from step 198 below.

First, in step 198, processing for expanding the control program is performed. The details of the expanding processing will be described later.

Next, "Do you want to reproduce the simulation result?" Is displayed on the display section 45 (step 200).

Here, if "NO" is input, the process is terminated (step 202). If "YES" is input, the process proceeds to step 204 in FIG.

In step 204, it is checked whether or not there is an abnormality in the simulation result as a program.

Here, when it is determined that there is an abnormality in the simulation result as a program (step 2).
04) (YES in step 04), the process proceeds to step 240 in FIG. 6. If there is no abnormality in the simulation result as a program (NO in step 204), a preset value is set in consideration of the preset "delay speed of control device". The simulation result is displayed at the displayed "display speed" (step 206).

Next, it is checked whether the "interrupt" switch has been pressed (step 208).

If the "stop" switch is not pressed (NO in step 208), step 212
If the switch of "interrupt" is pressed (YES in step 208), a process for interrupting the simulation display is performed (step 210). Step 21
The processing when the simulation display of 0 is interrupted will be described later in detail.

Next, it is checked whether or not the simulation display has been completed, that is, whether or not the last step of the program has been reached (step 212).

If the simulation display is not completed (NO in step 212), another process (step 214) is performed and the process returns to step 208. If the simulation display is completed (step 212). YES), the simulation display is stopped, and the elapsed time of the program and the state of the control device are displayed together with the control program of the last step of the program (step 216).

Next, "Do you want to replay the simulation result?" Is displayed on the display screen of the display unit 45 (step 218).

Here, if "NO" is input, the process is terminated (step 220). If "YES" is input, "is there any change in delay speed and display speed of control device?" It is displayed (step 222).

Here, it is checked whether or not the delay speed of the control device has been changed (step 224). If the delay speed of the control device has not been changed (N in step 224).
O), the process proceeds to step 228. If the delay speed of the control device has been changed (YES in step 224), the delay speed of the corresponding control device is set to the changed value (step 226).

Next, it is checked whether or not the display speed of the simulation has been changed (step 228).

If the display speed of the simulation is not changed (NO in step 228), the process proceeds to step 232. If the display speed of the simulation is changed (YES in step 228), the simulation is started. The display speed is set to the changed value (step 230).

Then, it is checked whether or not the simulation start switch has been pressed (step 232). If the simulation start switch has not been pressed (NO in step 232), another process (step 23) is performed.
The process returns to step 224 after performing 4). If the switch for starting the simulation is pressed (YES in step 232), another process (step 236) is performed and the process returns to step 206.

Next, when it is determined that there is an abnormality in the simulation result as a program (step 20).
4 is YES), the process proceeds to step 240 in FIG. 6, and it is checked whether or not the simulation result has reached an abnormal step as a program.

If it is determined that the simulation result has reached an abnormal step as a program (YES in step 240), the process proceeds to step 248. If the simulation result has not reached an abnormal step as a program, (N at step 240
O) Then, it is checked whether or not the "interrupt" switch has been pressed (step 242).

If the "stop" switch is not pressed (NO in step 242), another process (step 246) is performed and the process returns to step 240.
If the "Stop" switch is pressed (step 2
If the answer is YES in step S42, a process for stopping the simulation display is performed (step 244). Then, another process (Step 246) is performed, and the process returns to Step 240.

Next, at step 248, the reason why the command is abnormal as a program is displayed by the command from the corresponding control device, the state of the corresponding control device, and the elapsed time of the program.

As described above, the reason for the error is shown to the extent that inconsistency is detected in the simulation.

Next, it is checked whether or not the switch for modifying the control program has been pressed (step 250). If the switch for modifying the control program has been pressed (step 25).
(YES at 0), the control program is modified (step 252), and the process is terminated (step 258).

On the other hand, if the switch for modifying the control program is not pressed (NO in step 250), it is checked whether or not the "confirmation" switch is pressed (step 254), and the "confirmation" switch is pressed. If not performed (NO in step 254), other processing (step 25)
6) is performed and the process returns to step 248.
Is pressed (YES in step 254).
S), the process ends (step 258).

The above is the processing procedure of the display operation device 37 when the display device according to the present embodiment is used as a simulation / debug device.

Next, the processing procedure of the communication arithmetic unit 36 at this time will be described with reference to FIGS.

In FIG. 7, when the program starts, first, it is checked whether or not the display arithmetic unit 37 has requested the control unit 10 to execute the control program (step 260).

If there is no request for the control device 10 to execute the control program from the display arithmetic unit 37 (NO in step 260), another process (step 26) is executed.
2) is performed and the process returns to step 260. If the display arithmetic unit 37 requests the control device 10 to execute the control program (YES in step 260),
The controller 10 is requested to execute a program (step 264).

Next, it is checked whether or not there is a command from the control device to the control device (step 266). If there is no command (NO in step 266), step 282 is executed.
If there is an instruction (YES in step 266)
S), the contents of the next received instruction are written into the buffer RAM (buffer RAM (A)) 34 (step 26).
8) Further, the data is written into the buffer RAM (buffer RAM (B)) 41 which is a shared memory (step 270).

Next, the display operation device 37 to the control device 1
It is checked whether or not a request for 0 has been written to the buffer RAM (buffer RAM (B)) 41 (step 272). (NO in step 272), the process proceeds to step 278, but the request is
AM (buffer RAM (B)) 41 (YES in step 272), the buffer RAM (buffer R
AM (B)) 41 is stored in a buffer RAM (buffer R).
AM (A)) 34 (step 274). Then, the contents of the buffer RAM (buffer RAM (A)) 34 are transmitted to the control device (step 276).

Next, it is checked whether or not the instruction from the control device has ended (step 278). If the instruction from the control device has not ended (NO in step 278), another process (step 280) is performed. The process returns to step 266, but if the instruction from the control device has ended (YES in step 278), the process proceeds to step 300 in FIG.

On the other hand, if there is no command from the control device to the control device (NO in step 266), it is checked whether a predetermined time has elapsed (step 282). If no, the process returns to step 266, but if the predetermined time has elapsed (YES in step 282), an error without a response from the control device 10 is returned to the buffer RAM (buffer RAM (B)).
41 is written (step 284).

Next, it is checked whether or not there is a retry command from the display operation device 37 (step 286). If there is a retry command from the display operation device 37 (YES in step 286), the process proceeds to step S286. (Step 288), and the process returns to step 264.

On the other hand, if there is no instruction to retry from the display arithmetic unit 37 (NO in step 286), it is checked whether or not a certain time has elapsed (step 290). (NO at 290), another process (step 292) is performed, and the process returns to step 286.

On the other hand, if the predetermined time has elapsed (YES in step 290), no retry is performed, so another process (step 294) is performed and the process returns to step 260.

Next, if the instruction from the control device is completed (YES in step 278), the process proceeds to step 300 in FIG.
It is checked whether the writing of the request from the display computing device 37 to the control device 10 is completed or not. If the writing of the request from the display computing device 37 to the control device 10 is completed (YES in step 300), FIG. The process proceeds to step 294 of FIG. 7, performs another process (step 294), and returns to the process of step 260.

On the other hand, the display operation device 37 to the control device 1
If the writing of the request to 0 has not been completed (NO in step 300), it is checked whether the writing of the request from the display processing device 37 to the control device 10 is in the buffer RAM (buffer RAM (B)) 41 (step S300). 302), writing of a request from the display processing device 37 to the control device 10 is performed in a buffer RAM (buffer RAM).
(B)) If it is not in 41 (NO in step 302),
Other processing (step 308) is performed, and the processing returns to step 300.

On the other hand, the display operation device 37 to the control device 1
When writing of the request for 0 is in the buffer RAM (buffer RAM (B)) 41 (Y in step 302)
ES), buffer RAM (buffer RAM (B)) 41
RAM contents (buffer RAM (A)) 34
(Step 304), and the buffer RAM
The contents written in the (buffer RAM (A)) 34 are transmitted to the control device 10 (step 306). Then, another process (Step 308) is performed, and the process returns to Step 300.

The above is the processing procedure of the communication arithmetic unit 36 when the display device according to the present embodiment is used as a simulation / debug device.

Next, the processing procedure of the display arithmetic unit 37 will be described again.

FIG. 9 is a flowchart showing the details of the "control program development process" in step 198 of FIG.

In this process, when the program starts (step 310), the control unit 10 is requested to transmit the control program to the communication processing unit 36 (step 312). Then, a buffer RAM (buffer RAM)
(B)) Check the contents of 41 (step 31)
4).

Here, it is checked whether there is an error signal from the communication arithmetic unit 36 (step 316). If there is an error signal (YES in step 316), step 3
32, but if there is no error signal (step 31).
Then, it is checked whether or not the control program has been transmitted (step 318).

Here, if the control program has not been transmitted (NO in step 318), other processing (step 32)
0), and returns to the process of step 316.

On the other hand, if the control program has been transmitted (YES in step 318), the control program in the buffer RAM (buffer RAM (B)) 41 is written in the display memory 44 (step 322).

Then, the control program is expanded to convert the control program into a command for the control device (step 324).

Then, the developed control program is compared with the command for the control device received from the control device so far (step 326).

Then, as a result of the comparison, the control program and the command for the control device received from the control device are integrated (step 328), and the process is terminated (step 33).
0).

On the other hand, if there is an error signal from communication arithmetic unit 36 (YES in step 316), buffer R
The AM (buffer RAM (B)) 41 is checked to understand the contents of the error and displayed on the display unit 45 (step 3).
32).

Then, it is determined whether or not the retry switch has been pressed (step 334). If the retry switch has been pressed (YES in step 334), another process (step 336) is performed, and the process proceeds to step 336. It returns to the process of 312.

If the retry switch has not been pressed (NO in step 334), it is determined whether the "end" switch has been pressed (step 338), and if the "end" switch has not been pressed. (NO in step 338), perform another process (step 340), and return to the process of step 334.

If the "end" switch has been pressed (YES in step 338), step 202 in FIG.
The process ends.

The above is the details of the “processing for developing a control program” in step 198 of FIG.

Next, the details of "processing at the time of interruption of the simulation display" of step 210 in FIG. 5 and step 244 in FIG. 6 will be described with reference to FIG.

In this process, when the program starts (step 350), the simulation display is stopped, and the elapsed time of the program and the state of the control device are shown together with the control program at that time (step 35).
2).

Next, it is checked whether or not the switch for modifying the control program has been pressed (step 354). If the switch for modifying the control program has been pressed (step 35).
(YES in 4), the control program is corrected (step 356), and the process is terminated (step 35).
8).

If the switch for modifying the control program is not pressed (NO in step 354), it is checked whether or not the switch for changing the program step is pressed (step 360).

In this processing, there is a case where no input is made, a case where "forward" is inputted, and a case where "return" is inputted.

If there is no input, it is checked whether the "Resume" switch has been pressed (step 36).
2) If the "Resume" switch is not pressed (NO in step 362), another process (step 364) is performed, and the process returns to step 354.

If the "Resume" switch is pressed (YES in step 362), the simulation display is restarted from the step of the program in which the simulation display was stopped (step 366), and the process is terminated (step 366). 368).

On the other hand, if "SEND" is input in step 360, the control program, the state of the control device, and the elapsed time of the state after one step of the program are read from the display memory 44 (step 370). . The contents read from the display memory 44 are displayed on the display 45.
(Step 372), and other processing (step 37)
8) is performed, and the process returns to step 354.

On the other hand, if "return" is input in step 360, the control program, the state of the control device, and the elapsed time of the state before the step of the program are read from the display memory 44 (step 374). . The contents read from the display memory 44 are displayed on the display 45.
(Step 376), and other processing (step 37)
8) is performed, and the process returns to step 354.

The above is the details of the “processing when the simulation display is interrupted” in step 210 in FIG. 5 and step 244 in FIG.

Next, the details of the "control program correction processing" of step 252 in FIG. 6 and step 356 in FIG. 10 will be described with reference to FIG.

In this process, when the program starts (step 380), it is checked whether or not the control program has been changed (step 382).

If the control program has not been changed (NO in step 382), another process (step 386) is performed, and the flow advances to step 388.

If the control program has been changed (YES in step 382), the changed part of the control program read into the display memory 44 is corrected (step 384). This is the display memory 44
This is done by overwriting the corresponding part of.

Next, it is checked whether the step change switch of the program is pressed (step 38).
8) In this process, there is a case where there is no input, a case where "forward" is input, and a case where "return" is input.

Here, if there is no input, then "end"
It is checked whether or not the switch is pressed (step 39).
0), if the “end” switch is not pressed (NO in step 390), another process (step 392) is performed, and the process returns to step 382.

If the "end" switch has been pressed (YES in step 390), "Can I send the corrected control program to the control device?" Is displayed (step 394). Here, when “NO” is input, another process (step 392) is performed, and the process returns to the step 382. If "YES" is input, the control program including the changed portion is written into the buffer RAM (buffer RAM (B)) 41 (step 396), and the control program of the control program is transmitted to the communication arithmetic device 36. 10 (step 398),
This processing ends (step 400).

On the other hand, if "feed" is input in step 388, the control program, the state of the control device, and the elapsed time after the program step is read from the display memory 44 (step 402). . The contents read from the display memory 44 are displayed on the display 45.
(Step 404), and other processing (Step 45)
6) is performed, and the process returns to step 382.

When "return" is input in step 388, the control program, the state of the control device, and the elapsed time of the state in which the program step is immediately before are read from the display memory 44 (step 408). . The contents read from the display memory 44 are displayed on the display 45.
(Step 410), and other processing (Step 40)
6) is performed, and the process returns to step 382.

The above is the details of the “control program correction processing” in step 252 of FIG.

By the way, in the processing of FIG.
At 98, the program is terminated by instructing the communication arithmetic device 36 to transmit the control program to the control device 10, and then the processing procedure when the transmission to the control device 10 is confirmed and the program is terminated. Is shown in FIG.

In this process, when an instruction to transmit a control program is issued to the communication processing unit 36 (step 398), the communication processing unit 36 checks whether there is an error signal (step 422).

Here, if there is an error signal from the communication operation device 36 (YES in step 422), the process proceeds to step 436, but if there is no error signal from the communication operation device 36 (NO in step 422). Then, it is checked whether or not there is a transmission completion signal from the communication arithmetic unit 36 (step 424).

Here, if there is no transmission completion signal from the communication arithmetic unit 36 (NO in step 424), another process (step 426) is performed and the process returns to step 422. If there is a signal indicating that the transmission of the control program has been completed (YES in step 424), the display section 45 displays "transmission of the control program to the control device is completed" (step 428). Next, it is checked whether or not a certain time has elapsed (step 430). If the certain time has not elapsed (NO in step 430), another process (step 432) is performed, and the process returns to the step 428. ,
If the predetermined time has passed (YE in step 430)
S), the process ends (step 434).

On the other hand, if there is an error signal from communication arithmetic unit 36 (YES in step 422), buffer R
The AM (buffer RAM (B)) 41 is checked to determine the contents of the error and displayed on the display unit 45 (step 4).
36).

Next, it is checked whether the retry switch has been pressed (step 438). If the retry switch has been pressed (YES in step 438), another process (step 440) is performed. If the retry switch is not pressed (NO in step 438), it is checked whether the “end” switch is pressed (step 442), and the “end” switch is turned off. If it is not pressed (NO in step 442), another process (step 444) is performed and the process returns to step 438. If the “end” switch is pressed (YES in step 442), this process is performed. Finish (Step 4
34).

The above is the processing procedure when confirming the completion of transmission to the control device 10 and terminating the program.

In the first embodiment, the control program is simulated and debugged by the display arithmetic unit 37. Next, as a second embodiment, this function is provided on the communication arithmetic unit 36 side. This case will be described with reference to FIGS.

FIG. 13 is a block diagram showing a second embodiment of a control device system configured by applying the display device according to the present invention.

The processing of FIGS. 3 to 6 and the processing of FIGS. 9 to 12 performed by the display arithmetic unit 37 in the first embodiment.
Is different from the present embodiment in that the display function performed by the display operation device 37 itself is performed by the communication operation device 36 in the buffer R.
An AM (buffer RAM (B)) 41 is used for display on the display arithmetic unit 37.

Therefore, in FIG. 13, the timer / counter 42 is connected to the CPU bus 32 of the communication arithmetic unit 36. In the first embodiment, the simulation data is stored in a buffer RAM (buffer RAM (B)) 4.
1 is stored in the communication unit memory 33 in this embodiment.

Note that the other configuration is the same as that of the first embodiment shown in FIG. 1, and a duplicate description will be omitted.

The processing procedure when the communication arithmetic unit 36 simulates and debugs a control program will be described below with reference to FIGS. 14 to 21.

In FIG. 14, when the program starts, it is first checked whether or not the delay speed of the control device has been changed (step 450).

If the delay speed of the control device has not been changed (NO in step 450), step 45
When the delay speed of the control device has been changed (YES in step 450), the delay speed of the control device is set to the changed value by operating the input unit 47 (step 452).

Next, it is checked whether or not the display speed of the simulation has been changed (step 454).

If the display speed of the simulation is not changed (NO in step 454), the process proceeds to step 458. If the display speed of the simulation is changed (YES in step 454), the simulation is started. The display speed is set to the changed value (step 456).

Next, it is checked whether or not the simulation start switch has been pressed (step 458).

If the simulation start switch is not pressed (NO in step 458), another process (step 460) is performed and the process returns to step 450. If the simulation start switch is pressed, (YES in step 458), and requests control device 10 to execute the program (step 462).

Next, it is checked whether or not there is a command from the control device to the control device (step 464). If there is no command (NO in step 464), step 470 is performed.
If there is an instruction (YES in step 464)
S), the contents of the next received instruction are written into the buffer RAM (buffer RAM (A)) 34 (step 46).
6) and further write into the communication unit memory 33 (step 46)
8).

Next, in step 470, it is checked whether or not the retry switch has been pressed. If the retry switch has been pressed (YES in step 470), the process returns to step 462.

If the retry switch has not been pressed (NO in step 470), it is checked whether a predetermined time has elapsed (step 472). If the predetermined time has not elapsed (step 472). (NO), perform another process (step 474), and return to the process of step 470. If the predetermined time has elapsed (YES in step 472), perform another process (step 476) and perform the process of step 450. Return to

Next, the processing when there is an instruction from the control device 10 will be described with reference to FIG.

In this process, first, the operation of the control device corresponding to the command from the control device 10 is extracted from the communication unit memory 33 (step 492).

Next, it is checked whether or not the extracted operation is normal as a program (step 494).

Here, if the extracted operation is not normal as a program (NO in step 494), the flow proceeds to step 504. If the extracted operation is normal as a program (YES in step 494), the extraction is performed. The performed operation is written in the communication unit memory 33 in addition to the instruction from the corresponding control device (step 496).

Next, it is checked whether or not the command from the control device 10 has ended (step 500). If not (NO in step 500), another process (step 50)
2) is performed, and the process returns to step 492. If the process is completed (YES in step 500), the process proceeds to step 508 and subsequent processes which are debugging processes.

On the other hand, if the extracted operation is not normal as a program (NO in step 494), which instruction is abnormal as a program is written in the communication unit memory 33 in addition to the corresponding instruction (step 504). ).

Then, the extracted abnormal operation is written in the communication section memory 33 (step 506).

The processing from step 450 to step 506 is the simulation processing, and the debugging processing starts from step 508 described below.

First, at step 508, processing for developing the control program is performed, and the details of the developing processing will be described later in detail.

Next, "Do you want to reproduce simulation results" is displayed on the display section 45 (step 510).

Here, if "NO" is input, the process is terminated (step 512), but if "YES" is input, the process proceeds to step 520 in FIG.

At step 520, it is checked whether or not the simulation result has an abnormality as a program.

Here, when it is determined that there is an abnormality in the simulation result as a program (step 5).
20) (YES in step 20), the process proceeds to step 560 in FIG. 17. If there is no abnormality in the simulation result as a program (NO in step 520), a preset value is set in consideration of the preset “delay speed of control device”. The simulation result is displayed at the displayed "display speed" (step 522).

Next, it is checked whether the "interrupt" switch has been pressed (step 524).

If the switch of "interrupt" is not pressed (NO in step 524), step 528 is executed.
However, if the "interrupt" switch is pressed (YES in step 524), a process for interrupting the simulation display is performed (step 526). Step 52
The processing at the time of interruption of the simulation display of No. 6 will be described later in detail.

Next, it is checked whether or not the simulation display has been completed, that is, whether or not the last step of the program has been reached (step 528).

If the simulation display has not been completed (NO in step 528), another process (step 530) is performed and the process returns to step 524. If the simulation display has been completed (step 528). YES), the simulation display is stopped, and the elapsed time of the program and the state of the control device are displayed together with the control program of the last step of the program (step 532).

Next, "Do you want to replay simulation results?" Is displayed on the display screen of the display unit 45 (step 534).

Here, if "NO" is input, the process is terminated (step 536). If "YES" is input, "is there any change in delay speed and display speed of control device?" It is displayed (step 538).

Here, it is checked whether or not the delay speed of the control device has been changed (step 540). If the delay speed of the control device has not been changed (N in step 540).
O) The process proceeds to step 544. If the delay speed of the control device has been changed (YES in step 540), the delay speed of the corresponding control device is set to the changed value (step 542).

Next, it is checked whether or not the display speed of the simulation has been changed (step 544).

If the display speed of the simulation is not changed (NO in step 544), the process proceeds to step 548. If the display speed of the simulation is changed (YES in step 544), the simulation is started. The display speed is set to the changed value (step 546).

Then, it is checked whether or not the simulation start switch has been pressed (step 548). If the simulation start switch has not been pressed (NO in step 548), another process (step 55) is performed.
0) is performed and the process returns to step 540. If the switch for starting the simulation is pressed (YES in step 548), another process (step 552) is performed and the process returns to step 522.

Next, when it is determined that there is an abnormality in the simulation result as a program (step 52).
(YES at 0), the process proceeds to step 560 of FIG. 17, and it is checked whether or not the simulation result has reached an abnormal step as a program.

If it is determined that the simulation result has reached an abnormal step as a program (YES in step 560), the flow advances to step 568. If the simulation result has not reached an abnormal step as a program, (N at step 560
O) Then, it is checked whether or not the "interrupt" switch has been pressed (step 562).

If the "stop" switch is not pressed (NO in step 562), another process (step 564) is performed and the process returns to step 560.
If the "stop" switch is pressed (step 5
If YES in step 62, a process for stopping the simulation display is performed (step 566). Then, another process (step 564) is performed, and the process returns to step 560.

Next, at step 568, the reason why the command is abnormal as a program is displayed by the command from the corresponding control device, the state of the corresponding control device, and the elapsed time.

Next, it is checked whether or not the switch for modifying the control program has been pressed (step 570). If the switch for modifying the control program has been pressed (step 57).
(YES at 0), the control program is modified (step 572), and the process is terminated (step 574).

On the other hand, if the control program correction switch is not pressed (NO in step 570), it is checked whether the "confirmation" switch is pressed (step 576), and the "confirmation" switch is pressed. If not performed (NO in step 576), other processing (step 57)
8) is performed, and the process returns to the step 568.
Is pressed (YES in step 576).
S), this process ends (step 574).

FIG. 18 is a flow chart showing the details of the "processing for developing control program" in step 508 of FIG.

In this process, when the program starts (step 590), the control unit 10 is requested to transmit the control program (step 592).

Then, it is checked whether or not the control program has been transmitted (step 594).

If the control program has not been transmitted (NO in step 594), another process (step 59) is performed.
6) is performed, and the process returns to step 594.

On the other hand, if the control program has been transmitted (YES in step 594), the received control program is written in buffer RAM (buffer RAM (A)) 34 (step 598), and further written in communication unit memory 33. (Step 600).

Then, the control program is expanded to convert the control program into a command for the control device (step 604).

Then, the developed control program is compared with a command for the control device received from the control device so far (step 606).

Then, as a result of the comparison, the control program and the command for the control device received from the control device are integrated (step 608), and the process is terminated (step 61).
0).

The above is the details of the “processing for developing a control program” in step 508 in FIG.

Next, step 526 in FIG.
The details of the “processing when the simulation display is interrupted” in step 566 will be described with reference to FIG.

In this process, when the program starts (step 630), the simulation display is stopped, and the elapsed time of the program and the state of the control device are displayed together with the control program at that time (step 632).

Next, it is checked whether or not the switch for modifying the control program has been pressed (step 634). If the switch for modifying the control program has been pressed (step 63).
(YES in 4), the control program is modified (step 636), and the process is terminated (step 63).
8).

If the switch for modifying the control program has not been pressed (NO in step 634), it is checked whether or not the switch for changing the program step has been pressed (step 640).

In this processing, there is a case where no input is made, a case where "forward" is inputted, and a case where "return" is inputted.

If there is no input, it is checked whether the "Resume" switch has been pressed (step 64).
2) If the "Resume" switch is not pressed (NO in step 642), another process (step 644) is performed, and the process returns to step 634.

If the "Resume" switch is pressed (YES in step 642), the simulation display is restarted from the step of the program in which the simulation display was stopped (step 646), and the process ends (step 642). 648).

On the other hand, if "SEND" is input in step 640, the control program, the state of the control device, and the elapsed time of the state after one step of the program are read from the communication unit memory 33 (step 650). . Then, the contents read from the communication unit memory 33 are displayed on the display unit 45.
(Step 652), and other processing (step 6)
54) and the process returns to the step 634.

On the other hand, when "return" is input in step 640, the control program, the state of the control device, and the elapsed time of the state before the program step are read from the communication unit memory 33 (step 656). . Then, the contents read from the communication unit memory 33 are displayed on the display unit 45.
(Step 658), and other processing (step 6)
54) and the process returns to the step 634.

Steps 526 in FIG. 16 and FIG.
15 is the details of “Processing when simulation display is interrupted” in step 566 of FIG.

Next, step 572 in FIG. 17 and FIG.
The details of the "control program correction process" in step 636 will be described with reference to FIG.

In this process, when the program starts (step 670), it is checked whether or not the control program has been changed (step 672).

If the control program has not been changed (NO in step 672), another process (step 676) is performed, and the flow advances to step 678.

If the control program has been changed (YES in step 672), the changed part of the control program read into the display memory 44 is corrected (step 674). This is the communication unit memory 33
Is performed by overwriting the corresponding part.

Next, it is checked whether or not the step change switch of the program has been pressed (step 67).
8) In this process, there is a case where there is no input, a case where "forward" is input, and a case where "return" is input.

Here, if there is no input, then "end"
Is checked (step 68).
0), if the “end” switch is not pressed (NO in step 680), another process (step 682) is performed, and the process returns to step 672.

If the "end" switch has been pressed (YES in step 680), "can I send the corrected control program to the control device" is displayed (step 684). Here, if “NO” is input, another process (step 682) is performed, and the process returns to step 672. If “YES” is input, the control program including the changed portion is transmitted to control device 10 (step 686), and the process ends (step 688).

On the other hand, if "SEND" is input in step 678, the control program, the state of the control device, and the elapsed time of the state after one step of the program are read from the communication unit memory 33 (step 692). . Then, the contents read from the communication unit memory 33 are displayed on the display unit 45.
(Step 694), and other processing (step 6)
96), and returns to the process of step 672.

If "return" is input in step 678, the control program, the state of the control device, and the elapsed time of the state in which the program step is immediately before are read from the communication unit memory 33 (step 698). . Then, the contents read from the communication unit memory 33 are displayed on the display unit 45.
(Step 700), and other processing (step 6)
96), and returns to the process of step 672.

Step 572 in FIG. 17 and FIG.
It is a detail of the "processing of control program correction" in step 636 of FIG.

By the way, in the processing of FIG.
The control program is transmitted to the control device at 86 and the process is completed. Next, the process procedure when the transmission of the control program to the control device 10 is confirmed and the program is terminated is shown in FIG.
It is shown in FIG.

In this process, when the control program is transmitted to the control device (step 686), it is checked whether or not there is a transmission completion signal (step 710).

Here, if there is a transmission completion signal (YES in step 710), the display unit 45 displays "transmission of the control program to the control device is completed" (step 712). Next, it is checked whether a predetermined time has elapsed (step 714). If the predetermined time has not elapsed (NO in step 714), another process (step 71) is performed.
8) is performed, and the process returns to step 712. If the predetermined time has elapsed (YES in step 714), the process ends (step 716).

On the other hand, if there is no transmission completion signal (NO in step 710), another process (step 720) is performed to check whether or not the retry switch has been pressed (step 722). If the try switch is pressed (YES in step 722), another process (step 724) is performed and the process returns to step 710. If the retry switch is not pressed (NO in step 722), It is checked whether the "end" switch has been pressed (step 726). If the "end" switch has not been pressed (NO in step 726), another process (step 728) is performed and the process in step 722 is performed. Back to
If the "end" switch is pressed (step 726)
And the process ends (step 716).

The above is the processing procedure when confirming the completion of transmission to the control device 10 and terminating the program.

Note that in FIG. 13, the display device 30
Although described as a single unit, the arithmetic unit for communication 36 and the arithmetic unit for display 37 may be unitized. In that case, the buffer RAM (buffer RAM (B)) 41 may be in either unit.

By the way, in the control device 30 of the first embodiment shown in FIG.
The input data for the control device is collected via the O-I / F circuit 35, and the output data for the control device is output. Next, as a third embodiment, a display operation device 37 is used. FIG. 22 shows a case in which input data for a control device is collected via a parallel I / O-I / F circuit 35 and output data for the control device is output.
This will be described with reference to FIG.

In FIG. 22, the parallel I / O-I / F circuit 35 includes a CPU bus 54 to which the display operation device 37 is connected.
And the display operation device 37 is connected to the parallel I / O-I
It is configured to collect input data of the control device via the / F circuit 35 and output output data of the control device.

In FIG. 22, since the other configuration is the same as that shown in FIG. 1, the same portions are denoted by the same reference characters and will not be described repeatedly.

In FIG. 22, the display device 30 is
Although described as a single unit, the arithmetic unit for communication 36 and the arithmetic unit for display 37 may be unitized. In that case, the buffer RAM (buffer RAM (B)) 41 may be in either unit.

Next, as shown in FIG. 22, the display arithmetic unit 37 collects input data for the control device via the parallel I / O-I / F circuit 35 and outputs output data for the control device. The processing procedure in the case of performing is described with reference to FIG.

In this processing, first, it is checked whether or not there is a command from the control device 10 to the control device. When there is a command from the control device 10 to the control device, this is performed by the communication arithmetic unit 36. Instruction contents are buffer RAM
Since the data is written to the (buffer RAM (B)) 41, the process is performed by checking whether or not the buffer RAM (buffer RAM (B)) 41 has an instruction from the control device 10 (step 740).

Here, the buffer RAM (buffer RAM)
(B)) When there is no command from the control device 10 in 41 (NO in step 740), the process proceeds to step 744.
If there is an instruction from the control device 10 in the buffer RAM (buffer RAM (B)) 41 (YE in step 740)
S), the execution of the command is transmitted to the control device corresponding to the received command (step 742).

When the execution of the command is transmitted to the control device corresponding to the received command, the control device checks whether there is a signal such as logging data (step 74).
4).

If there is no signal from the control device (NO in step 744), the flow advances to step 748.
If there is a signal from the control device (YE in step 744)
S), the contents of the received signal are written into the buffer RAM (buffer RAM (B)) 41 (step 746).

Next, at step 748, a command from the control device and the operation of the control device are displayed on the display unit 45 on a monitor.

Then, another process (step 750) is performed, and the process returns to step 740.

In the processing shown in FIG. 23 as well, the communication arithmetic unit 36 transmits only the signals which need to be fed back to the control unit 10 among the signals received from the control device to the control unit 10. Therefore, the control device 1
0 can be reduced, and the speed of the control device system can be increased.

In the third embodiment shown in FIG. 22, the simulation and debug functions may be provided in the communication arithmetic unit 36 or the display arithmetic unit 37. In this case, Are the same as those in the first and second embodiments, and thus will not be described repeatedly.

Whether the communication function with the control device is provided in the communication processing device 36 as shown in FIG. 1 or the display processing device 37 as shown in FIG. Should be assigned. Alternatively, it may be assigned to a person with a light load as a whole.

FIG. 24 is a block diagram showing a fourth embodiment of the present invention, in which a new execution arithmetic unit 50 is provided, and the execution arithmetic unit 50 realizes simulation and debugging functions. I have to.

That is, in this embodiment, a timer / counter 42 and an execution unit memory 62 are provided on the CPU bus 61 of the execution arithmetic unit 50, and the execution arithmetic unit 50 and the C
A bus control circuit 60 is provided between the communication device and the PU bus 54, and a buffer RAM busy signal (buffer RAM use permission signal) 63 is transmitted from the execution device 50 to the communication device 36. 36 returns a buffer RAM busy signal 64 to the execution arithmetic unit 50,
A buffer RAM busy signal (buffer RAM use permission signal) 65 is transmitted from the execution computing device 50 to the display computing device 37, and a buffer RAM busy signal 66 is transmitted from the communication computing device 37 to the execution computing device 50. I try to reply.

The execution unit memory 62 is used as a memory when the execution arithmetic unit 50 simulates and debugs the control program.

Further, the bus control circuit 60 is configured so that the execution arithmetic unit 50 is a buffer RAM (buffer RAM (B)) 41.
When the CPU is accessed, the CPU bus 54 is controlled.

The execution arithmetic unit 50 is provided with a buffer RAM (buffer RAM (B)) from the communication arithmetic unit 36.
When there is a request to access 41, a buffer RAM busy signal (buffer RAM use permission signal) 63 is transmitted to the communication computing device 36, and a buffer RAM busy signal 64 is received from the communication computing device 36. Also, a buffer RAM (buffer RAM)
(B)) When there is an access request to 41, a buffer RAM busy signal (buffer R
AM use permission signal) 65, and the display arithmetic unit 37
Receives the buffer RAM busy signal 66 from the CPU.

In the fourth embodiment, the communication function is executed by the communication arithmetic unit 36, the display function is executed by the display arithmetic unit 37, and the other processing is executed by the execution arithmetic unit 50. The processing procedure of the execution arithmetic unit 50 is the same as the processing procedure of the first embodiment except for the communication function and the display function in the flowcharts of FIGS.

According to such a configuration, the load on the communication computing device 36 and the display computing device 37 can be reduced, and the load on the control device 10 can be reduced. In particular, a large number of display devices and the like are provided in the system. It is suitable for a distributed system.

FIG. 25 shows a display example of the display unit 45. In FIG. 25, the display section 45 is provided with a “Resume” switch 71 and an “End” switch 72, and has a “Return” key 73, a “Send” key 74, a “Previous page return” key 75, a “Back” key. A “page feed” key 76 is provided.

Here, the "resume" switch 71 is depressed when resuming the simulation, and is constituted by a transparent touch switch or the like. For example, in the "processing when the simulation display is interrupted", the step shown in FIG. 3
It is depressed at 62.

The "end" switch 72 is depressed when ending the simulation, and is also constituted by a transparent touch switch or the like.

A "return" key 73 is used to
This is used when returning to the previous step. For example, in “Processing when simulation display is interrupted”, FIG.
Is pressed in step 360 of FIG.
Proceed to step 374).

The "send" key 74 operates the program 1
This is used when sending after the step. For example, in “Processing when simulation display is interrupted”, FIG.
Is pressed in step 360 of FIG.
Proceed to step 370).

Similarly, the "previous page" key 75 is used to return the program to the previous page.

The "next page" key 76 is used to send the program one page later.

In the figure, it is understood from the display unit 45-1 that the control program of the control device "01" is simulated, and the display unit 45-2 simulates the step "0030" of the control program. From the display unit 45-3, it is known that the elapsed time of the current step is “055.3 ms”, the display unit 45-4 knows the program contents of the current step, and the display unit 45-5 has The current operation state of the I / O is known.

In FIG. 25, when the control program is displayed on the display unit 45-4, the control program is displayed as a ladder diagram.
As shown in FIG. 6, the information may be displayed in a language program for a computer.

By the way, in a control device system such as the present system, delicate timing adjustment on site may be required. For example, when the device to be controlled is a conveyor, there are times when it is necessary to adjust the speed and timing of the conveyor a little earlier or later. In such a case, in the present system, a dip switch (not shown) for analog setting is provided on the surface of the control (CPU) unit 12 constituting the control device 10, and the program is not changed using a driver or the like. In this case, the setting value in this case can be displayed on the display unit 45 of the display device 30 as shown in FIG. 27, and the setting value of the TIM 000 is internally assisted. It can be confirmed that the relay 220CH has been set. Therefore, there is an effect that an external analog set value which is difficult to confirm can be easily confirmed on the screen.

FIG. 28 shows an example in which the display device according to the present invention is applied to a control device system.
2A, two control devices 10 and 2 are connected to an I / O bus 20.
One display device 30 is connected, and a control device to be controlled is connected to each display device 30.

[0275] In (b), two control devices 10 and three display devices 30 are connected to the I / O bus 20, and a control device to be controlled is connected to each display device 30.

FIG. 29 shows an example in which the display device according to the present invention is used for simulation / debugging of a control program. In FIG. 29 (a), the display device 30 is directly connected to the control device 10. Have been.

In (b), one control device 10 and one display device 30 are connected to the I / O bus 20.
In (c), one controller 10 and 2 are connected to the I / O bus 20.
One display device 30 is connected to the two control devices 10 and one display device 30 to the I / O bus 20 in (d), and two control devices 1 to the I / O bus 20 in (e).
0 and two display devices 30 are connected.

As described above, in each of the embodiments, a display device having a slave function is provided, and data such as logging data that a person only monitors the state of the system is directly collected by the display device without passing through a control device. Since the display is performed, the load on the control device is reduced, and the control speed of the entire system can be improved.

Also, at the time of simulation debugging,
The operation time of the controlled device has a delay time, and the simulation is performed in consideration of the actual time from when the controlled device receives a command from the control device to when the command starts to be executed. Therefore, accurate simulation can be performed.

In setting the delay time, a delay time is set for each control target control device so that the same device can be set individually. Therefore, accurate simulation can be performed.

If the actual execution time is not known, the control device is connected to the display device 30 having the slave function, and after the display device 30 receives a command from the control device 10, the signal from the control device is received. May be measured by the timer / counter 42 until the time is returned to the control device 10. The measurement time can be displayed on the display unit 45, and the result can be reflected in the delay time.

As described above, even when the simulation taking into account the delay is executed, the actual execution time of the control program is on the order of milliseconds or microseconds. Can not be confirmed with the eyes.

Therefore, in the present embodiment, the execution time is delayed by, for example, 1000 times as long as the actual display time,
It is displayed for each step. Therefore, the program creator can accurately check whether there is any operation other than the one intended.

When the simulation function is executed, inconsistency may occur. In this case, the conventional simulation device could display the error and the type of the error, but could not display the cause of the error. However, in such a display method, it takes time to identify the cause of the error. Therefore, in the present embodiment, the cause is displayed within a known range, and it is possible to help identify the cause of the error. Therefore, the cause of the error can be quickly found.

Further, the present embodiment can cope with the flow of opening.

That is, the flow of open control systems, which have been independently developed and provided by each manufacturer, has begun from the point of communication (open bus). In other words, an open bus can be connected by an I / O bus for which a standard is determined in advance, even if the bus is not from the same manufacturer.

However, in the present embodiment, for example, the above-described effect can be obtained by omitting wasteful communication between each part of communication, control, and display using the open (I / O) bus. Even under the same condition as a bus, the function can be effectively used.

[0288]

As described above, according to the first aspect of the present invention, a command from the control device accompanying the execution of the control program is transmitted between the control device and the control target device to the control target device. In a display device having a slave function of transmitting an execution result of a control target device to an instruction to a control device, an execution result monitor display unit displays an execution result of the control target device in its own process without passing through the control device. Therefore, the following effects can be obtained. (1) The burden on the control device is reduced, and the control capability of the control device can be improved. (2) High-speed display of control system data can be achieved. (3) It is possible to cope with the flow of opening.

According to the second aspect of the present invention, a command on the control device side accompanying the execution of the control program is transmitted between the control device and the control target device to the control target device.
In a display device having a slave function of transmitting an execution result of the controlled device to the control device in response to the instruction, an execution result simulation display unit simulates an execution result of the controlled device in response to the instruction of the control device. This eliminates the need for a simulation apparatus having complicated software and hardware having high-speed processing capability as in the related art, and can reduce the load of the simulation debug processing.

According to the third aspect of the present invention, the second aspect
In the invention described above, the execution result simulation display means simulates and displays the execution result with a delay time until the execution of the control target device. Simulation considering the real time until the start of instruction execution can be performed, and accurate simulation debugging can be performed.

According to the fourth aspect of the present invention, the second aspect
In the described invention, the execution result simulation display means has a control program delay execution means for executing the control program with a delay, so that the program creator can accurately check whether there is any operation other than the one intended by the program creator. You can do it.

In the invention according to claim 5, claim 2
In the invention described above, the execution result simulation display means displays an error when an inconsistency occurs in the execution result during the execution of the control program, so that it is possible to help identify the cause of the error.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a control device system configured by applying a display device according to the present invention.

FIG. 2 is a flowchart illustrating a processing procedure of a communication arithmetic device in a normal state to which a control device of the display device illustrated in FIG. 1 is connected.

FIG. 3 is a flowchart showing a processing procedure of a display arithmetic unit at the time of simulation / debugging of the display device shown in FIG. 1;

4 is a flowchart showing a processing procedure of the display arithmetic unit during simulation / debugging of the display device shown in FIG. 1;

5 is a flowchart showing a processing procedure of the display arithmetic unit at the time of simulation and debugging of the display device shown in FIG. 1;

6 is a flowchart showing a processing procedure of the display arithmetic unit at the time of simulation / debugging of the display device shown in FIG. 1;

FIG. 7 is a flowchart showing a processing procedure of the communication arithmetic device at the time of simulation and debugging of the display device shown in FIG. 1;

8 is a flowchart showing a processing procedure of the communication arithmetic unit at the time of simulation / debugging of the display device shown in FIG. 1;

FIG. 9 is a flowchart showing details of “processing for developing a control program” in step 198 of FIG. 4;

FIG. 10 shows step 210 in FIG. 5 and step 2 in FIG.
44 is a flowchart showing the details of “processing when simulation display is interrupted” of 44.

FIG. 11 is a flowchart showing details of “control program correction processing” in step 252 of FIG. 6;

FIG. 12 is a flowchart showing a processing procedure in the case of confirming completion of transmission to the control device and ending the program in the processing of FIG. 11;

FIG. 13 is a block diagram showing a second embodiment of a control device system configured by applying the display device according to the present invention.

FIG. 14 is a flowchart showing a processing procedure in the case where simulation / debug processing is performed by the communication arithmetic device in the display device shown in FIG. 13;

FIG. 15 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 16 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 17 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 18 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 19 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 20 is a view similar to FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

21. Similarly, in the display device shown in FIG.
9 is a flowchart showing a processing procedure when performing a simulation / debugging process in the communication arithmetic device.

FIG. 22 is a block diagram of a third embodiment of the present invention;
FIG. 2 is a configuration diagram in a case where a display arithmetic unit collects input data on a control device via a parallel I / O-I / F circuit and outputs output data on the control device.

FIG. 23 shows a processing procedure in the case where the display arithmetic device collects input data on the control device via the parallel I / O-I / F circuit and outputs output data on the control device in FIG. The flowchart shown.

FIG. 24 is a block diagram showing a fourth embodiment of the present invention, and is a configuration diagram in a case where an execution operation device is provided and the simulation and debug functions are realized by this execution operation device.

FIG. 25 is a diagram showing a display example of a display unit.

FIG. 26 is a diagram showing a display example in a case where a language program for a computer is displayed on the display unit in FIG. 25;

FIG. 27 is an explanatory diagram showing a case where the setting content is displayed on the display unit of the display device when the timer (setting) value is directly changed by the control (CPU) unit.

FIG. 28 is a diagram showing an example of use when a display device according to the present invention is applied to a control device system.

FIG. 29 is a view showing a use example when the display device according to the present invention is used for simulation / debugging of a control program.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 control device 11 I / O (master) unit 12 control (CPU) unit 13 advanced unit 20 I / O bus 30 display device 31 communication I / F circuit 32 CPU bus 33 communication unit memory 34 buffer RAM (buffer RAM (A )) 35 Parallel I / O-I / F circuit 36 Communication operation device 37 Display operation device 38 CPU bus 39, 40 Bus control circuit 41 Buffer RAM (buffer RAM (B) 42 Timer / counter 43 Lamp 44 Display memory 45, 45-1, 45-2, 45-3, 45-4, 45
-5 display unit 46 buzzer 47 input unit 50 execution unit 52 buffer RAM busy signal (buffer RAM use enable signal) 53 buffer RAM busy signal 54 CPU bus 60 bus control circuit 62 execution unit memory 63 buffer RAM busy signal (Buffer RAM use permission signal) 64 Buffer RAM use signal 65 Buffer RAM use signal (buffer RAM use permission signal) 66 Buffer RAM use signal 71 "Resume" switch 72 "End" switch 73 "Return" key 74 "Next" key 75 "Previous page" key 76 "Next page" key

Continued on the front page F term (reference) 5H215 AA01 BB07 BB09 BB12 BB20 CC09 CX05 CX06 GG05 JJ14 KK04 5H219 AA01 BB02 CC09 CC12 CC17 FF07 5H223 AA01 BB02 CC03 CC09 DD03 DD05 EE06 9A001 HH32

Claims (5)

[Claims] 1. An instruction between a control device and a device to be controlled interposed between a control device and a device to be controlled, the command of the control device accompanying the execution of the control program is transmitted to the device to be controlled, and the execution result of the command to the device to be controlled is transmitted to the control device. A display device having a slave function, comprising: an execution result monitor display unit that monitors and displays an execution result of the control target device in its own process without passing through the control device. 2. A control device-side command accompanying execution of a control program is transmitted to a control target device via a control device and a control target device, and an execution result of the control target device side for the command is transmitted to the control device. A display device having a slave function, comprising: an execution result simulation display means for simulating and displaying an execution result of the controlled device in response to a command from the control device. 3. The display device according to claim 2, wherein the execution result simulation display means simulates and displays the execution result with a delay time before the execution of the control target device. 4. The display device according to claim 2, wherein the execution result simulation display means includes a control program delay execution means for executing the control program with a delay. 5. The display device according to claim 2, wherein the execution result simulation display means displays an error when an inconsistency occurs in the execution result during execution of the control program.