JPS60229117A - Programmable controller - Google Patents

Abstract

PURPOSE:To monitor acoustically a state change of control input/output data by detecting a change of the signal state of a terminal designated by the information on an input/output terminal and generating sounds according to said detected change. CONSTITUTION:Input data I1, I2...IM are stored successively to an input side area DM of an input/output memory 35 via an input circuit 15; while data O1, O2...ON are stored successively to an output side area DM respectively. An input/output registration area memory RM in a working memory 33 designates an area to be monitored at the input/output side through a keyboard 11. For instance, the data obtained at and before I3 of an area to be monitored are called out of a registration memory RM. At the same time, the latest data is called out of an input/output data memory DM and compared with those called out of the memory RM. When a difference is produced between both data, and sounds are delivered. The sound output supplies a sound production signal 18 to a sound synthesizer 17 via the circuit 15 to produce a sound signal 21. This signal 21 is amplified to inform an operator, etc. through a speaker 23 that the 3rd input signal state has a change. Thus the monitor is possible in addition to the display of a display device 13.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to programmable controllers, and in particular:
A programmable device that uses sound to notify changes in signal status at predetermined points on the input or output side.
It is related to the controller.

(Prior Art and its Problems) As is well known, a programmable controller (hereinafter simply referred to as a PC) is commonly used as a device for sequence control using order control or condition control.

In this type of PC, a central processing unit (hereinafter referred to as a CPU) sequentially executes user programs stored in a memory.

Input data to be referenced when executing the user program is supplied from the outside via the input circuit, and output data obtained as a result of executing the user program is supplied to the controlled equipment (e.g. electric motor, air conditioner, etc.) via the output circuit. ).

Conventionally, monitoring of input data and output data has been performed based on lighting indicators using light emitting diodes, etc., and this makes it possible to see what input data state is being controlled and which controlled W devices are operating. The operator can easily understand whether the device is inside or not.

However, in order to know when the status of specific input/output data has changed using such a lighting indicator, the operator must constantly monitor the PC's display device, and the environment in which the PC is installed Under poor conditions, there is a problem in that visual monitoring errors are likely to occur.

(Object of the Invention) The present invention has been made in order to solve the above-mentioned problems, and provides a programmable controller that enables auditory monitoring of changes in the state of control input data or output data at a predetermined location. The purpose is to provide.

(Structure and Effects of the Invention) This purpose is to temporarily store input/output/terminal information input by manual operation of a predetermined key as a monitoring target, and to monitor the signal state of the terminal specified by this input/output terminal information. This is achieved by detecting a change in the state of the sound and generating sound in accordance with the change in state.

With such a configuration, it is possible to realize a programmable controller that can audibly monitor the signal state of control data or output data.

(Example of the invention) The present invention will be described in detail below based on the drawings.

FIG. 1 shows the configuration of a PC according to an embodiment of the present invention. In the figure, a keyboard 11 is used to issue commands for the entire PC, such as writing a program, specifying a program mode or execution mode, and specifying a location to be monitored.

The display device 13 shows the command and address being programmed.

Displays ladder diagrams, input/output data status, etc.

The input/output device (I10'>15) has an input circuit 151 as an interface for control input data and an output circuit 15o as an interface for supplying output data to the controlled device.

The speech synthesis device 17 generates a speech signal according to the speech production signal 18 supplied from the input/output device 15 . The amplifier 19 receives the audio signal 2 generated from the audio synthesizer 17.
Amplify 1. The speaker 23 is an amplified audio signal 25
Pronounce a predetermined phonetic word based on.

The system program memory 27 is composed of ROM, and P
A program is written that controls the overall operation of C.

It's included. The user program memory 29 is, for example, P
It is composed of ROM and stores programs for performing the control desired by the user.

The CPU 31 controls the entire PC and performs arithmetic processing according to a system program and a user program.

The working memory 33 is composed of RAM, and CPLJ3
Data is stored during processing by 1. Input/output memory 3
5 is the input data introduced from the input circuit 15i and C
Stores output data after processing by the PLI 31. This input/output memory 35 is backed up by a battery 37.

Each of the above parts and memory is connected to the path line 39.
Data is exchanged via the .

The input circuit 151 of the input/output device 15 is connected with multiple contact points 41 such as limit switches and photoelectric switches related to controlled devices, and the output circuit 150 is connected with many controlled devices 43 such as electric motors. Grid connected.

In the input side area DMi of the input/output memory 350 shown in FIG. 1, control input data (Il, 12. Side area DM.

Control output data (01, 02, . . . , ON>) after being subjected to arithmetic processing by the CPLI 31 are stored in sequence.

The input/output registration area memory RM (see FIG. 3) provided in the working memory 33 is used to command the registration state using the keyboard 11. In other words, the feature of the present invention is to use the keyboard 11 to specify the location to be monitored on the input side or output side, and to input various necessary data (either the input side or the output side, number, etc.) regarding the specified monitoring point. ) are grouped together and stored sequentially. From now on, if you specify multiple monitoring points,
The stored data is divided into multiple groups accordingly.

Based on the configuration of the embodiment of the present invention described above and the functions of each part thereof, the operation will be described in detail below with reference to the operation flowcharts of FIGS. 4 to 7.

FIG. 4 shows the overall sequence of operations of the embodiment of the present invention.

The CPU 31 performs processing in accordance with a system program for controlling the entire PC stored in the system program memory 27 shown in FIG.

First, clear the necessary memory (RAM), set the ROM program counter to the initial starting address, and display device 1.
3, initial processing is performed such as displaying a necessary initial message, setting the cursor at the start point, and establishing a standby state for commands from the keyboard 11 (step 411).

Next, any key presses performed on the keyboard 11 are read (step 412).

The key manual input contents (commands, command data, etc.) are stored in a predetermined memory to perform key manual processing, and the key manual input contents are displayed on the display device 13 (step 41).
3).

If the PC is in program mode, step (413,
), the key manual content temporarily stored in the working memory 33 is then written to the knee-saver memory 29 in an orderly manner. As a result, the previous program will be erased and a new user program will be stored.

After key manual processing (step 413), control input data■
1 to IM input/output data memory DM input side area DM
The data is stored in a predetermined location of i, and the input is updated (step 414).

Next, it is determined whether the operating mode of the PC is the execution mode (step 415). In program mode (
Negative determination), all the latches of the output circuit 150 are cleared in step 416), and the process returns to step (412) to repeat the loop operation.

By such an operation, a user program is newly written into the user program memory 29.

Next, the execution mode will be explained. Step (412)
If a command to instruct the execution mode is entered manually using the keyboard 11, the condition judgment in step (4-15>) becomes a portrait judgment, and the mode shifts to a mode in which the user program inside the PC is executed. .

In the execution mode, first the program counter PCT is set to an initial address (for example, O) (step 417). The program instructions stored in the address specified by the program counter PCT are stored in the user program memory 29.
The data is read from and stored in the working memory 33 (step 418).

This read instruction is the program end instruction (END)
It is determined whether or not (step 419).

If it is not an end command (negative determination), the command is executed by interpreter processing (step 420), and the program counter PCT is incremented (step 421).
After doing so, the process returns to step (418).

Step (418) to step (421) like this
By repeating the operation in a loop,
Sequentially execute operations according to the user program. The processing results obtained by executing the commands are stored in the output side area DMO of the input/output data memory DM each time.

When the user program ends, that is, the EN'D command is issued, the condition judgment in step (419) becomes a personality judgment, so the loop is extracted and the control output data already stored in the output side area DMO of the input/output memory DM is used. Based on this, the controlled device 43 is controlled and set via the output circuit 150. In other words, the output is updated (step 422).

Thereafter, the process returns to step (412) and a new key input is performed to operate the PC.

FIG. 5 shows the flow for performing the sound generation operation which is a feature of the present invention. The operations in the manual key reading (step 412) and manual key processing (step 413) explained in FIG. 4 are mainly shown when they are "pronunciation" operations.

First, it is determined whether or not the voice notification registration key instructing the "voice notification registration mode" has been operated (step 511).

If the voice notification registration key is operated on the keyboard 11 (portrait determination), a voice notification registration processing operation is performed (step 512). In this step, various data related to the monitoring point designated by the keyboard 11 are stored as one group in the input/output registration area memory RM.

The order in which this voice notification registration process is performed is shown in FIG. By operating the keyboard 11, one of Ilo is specified as the point to be monitored (step 611). Here, either the input side or the output side is determined.

Next, the number of the location to be monitored is specified (step 612). For example, on the input side, this specified number is I+, 12. ..., IM, 0 on the output side
1,02. ..., ON, etc., which are predefined.

Furthermore, the data specifying the type and number of Ilo is temporarily stored in the working memory 33.
By operating the ``N D'' key, it is stored in the input/output registration area memory RM and the voice notification registration process is performed (
step 613).

As a result, for example, when specifying and registering the "third input terminal" as a monitoring point, the respective information of "I" indicating that it is the input side and "pan number 3" indicating that it is the third is written into the input/output registration area memory RM.At the same time, the control input data I at the third input terminal is
3 is retrieved from the input/output side area DMi of the input/output data memory DM, called, and stored after "F', 6' number 3" (see FIG. 3).

After performing one registration, it is determined whether all voice notification registrations have been completed (step 614).

If not completed (negative judgment), step (611)
Return to again. Next, specify the location you want to register again. For example, if the point to be monitored is "7th output terminal", output side information 1
1 Q +1. The seventh information "number 7" and the control output data I7 read from the input/output data memory DM are similarly written as a group to the input/output registration area memory RM.

When all voice notification registrations are completed in this way, an affirmative determination is made in step (614), and the process moves to the input updating operation (step 414) in FIG. 4.

The explanation returns to step (511) in FIG. 5 again.

For example, if the voice notification registration has already been completed, the voice notification registration key has not been operated in the manual key reading step (412>), so the condition determination in step (511) is negative.

Thereafter, the PC makes a conditional judgment as to whether or not it is in the voice notification mode (step 513). If the key to set the voice notification mode has already been pressed in step (412>), an affirmative determination is made and a change in the data signal state on the input side designated as a monitoring point is searched for (step 514).

The retrieved data on the input side has already been stored in the input/output registration area memory RM (see FIG. 3) according to the procedure shown in FIG. 6, and this stored data is the previous one. Further, the latest input side data whose state may have changed is written in the input side area DMi of the input/output data memory DM.

Therefore, the previous data of, for example, the third input terminal (3), which is a point to be monitored, is read from the input/output registration memory RM. Further, the latest data of the third input terminal I3 is read from the input/output data memory DM. These retrieved data are compared to determine whether there is a difference (step 514). If there is a difference (portrait determination), audio output is performed (step 515).

For audio output, a voice creation signal 18 is supplied to the voice synthesis device 17 via the input/output device 15 shown in FIG. here,
Since it is the input side (1) and the number 3 is the third input terminal, the audio signal 21 of, for example, "Daisan Nyu Ryoku Ga Kawarimashita" is generated. After this is amplified, the sound is generated by the speaker 23, thereby notifying the PC operator and nearby observers that a change has occurred in the data signal state at the third input terminal.Therefore, the display In addition to displaying the device 13, reliable monitoring can be performed.

In step (514), if there is no change in the data signal state of the monitoring point (negative determination) and in step (514),
After the audio output in step 15), it is determined whether or not the determination of data status changes at all monitoring points has been completed (step 516).

If the process has ended, the process returns to step (514) to determine whether there is a change in the status of another monitoring point. If all the determinations have been completed or if the mode is not voice notification mode (step 513) (negative determination), other key manual processing is performed (step 517), and then input update operation (step 414) is performed. Transition.

Next, the case where the monitoring point is the output side will be explained.

The operations in the order shown in FIG. 7 are incorporated into the process of executing the system program described with reference to FIG.

After the output is updated (step 422) in FIG. 1, it is determined whether or not the PC is in the audio notification mode, and it is determined whether or not to judge a change in the signal state of the control output data at the location requiring monitoring (step 711).

Already, with the key human power (step 412) shown in FIG.
If the audio notification mode is specified, step (71)
The determination in step 1) is affirmative, and a conditional determination is made as to whether or not a change has occurred in the data signal state on the designated output side (step 712).
).

For example, if the point to be monitored is the seventh output terminal, the content stored in the input/output registration area memory RM is searched and “0
The previous data signal state of the seventh output terminal is called from the index of 7''.

Also, the "7th output terminal data signal state" is called from the latest data group written in the output side area DMO of the input/output data memory DM. Compare both of these called data to see if there is a difference. It is determined whether or not (step 712).

If there is a difference between the two data (affirmative determination), a voice is used to notify that a change in data has occurred at the monitoring point (step 713), similar to step (515) shown in FIG.

Similarly here, the audio creation signal 18 based on the information of "O11" representing the "output side" and "number 7" representing the "seventh output end" is input and output from the input/output device 15. The signal is supplied from the device 15 to the speech synthesis device 17. In response to this signal 18, an audio signal 21 of "Dinana Shutsuryoku ga Kawarimashita" is generated and amplified and then sounded by the speaker 23.

Therefore, in addition to the display on the display device 13, the PC operator and a nearby observer can audibly perceive that ``a change has occurred in the data signal state at the seventh output terminal''.

After determining the change in one designated output terminal in this way,
That is, after the audio is output in step (713) or after it is determined that there is "no change" (negative determination) in step (712>), it is determined whether or not data changes have been determined for all output terminals to be monitored. (Step 714
). If the determination has not been completed (negative determination), step (
712) and a new supervisor? Changes in the data signal state are determined for 52 locations.

By repeating such a loop operation, all negative output terminals are searched. When all the determinations are completed, an affirmative determination is made in step (714), the loop is extracted, and the operation in the audio notification mode is ended. In that case and when the audio notification mode is not specified (
(negative determination in step 711), the process moves to the key manual operation (step 412) shown in FIG.

Since the state of control input data may change even when the PC is in the execution mode, the input side may also be designated as a monitoring point in the operation shown in FIG. 7.

By comparing the stored data content of the input/output data memory DM, which is updated over time or depending on conditions, with the stored data of pre-registered monitoring points each time, changes in the data state on the input or output side can be detected audibly. It can be easily monitored by notification.

In the embodiment, the notification means is constituted by a voice synthesizer 5A, but if there are only a few points to be monitored, a simple sounding device such as a buzzer on the instep may be used. It is also possible to distinguish between a plurality of types by only sounding the buzzer or by changing the frequency of the buzzer.

Furthermore, in the above-mentioned embodiment, a change in input/output is notified based on a change in input or output from the state at the time of registration.
For example, if a 2-bit FIFO stack is provided for each registered object and data is bushed there each time an input/output is updated, audio notifications can be made in response to both on->off and off-on changes. .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a programmable controller according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the storage state of the input/output memory, and FIG. 3 is an explanatory diagram showing the storage state of the input/output registration area memory. 4 to 7 are flowcharts showing the operation of the programmable controller shown in FIG. 11...Keyboard 13...Display device 15...Input/output device 17...Speech synthesis device 18...Speech creation signal 23...Speaker 29...User program memory 31...Central processing Device (CPLJ) 35... Input/output memory Patent applicant Tateishi Electric Co., Ltd. Figure 4 (Ste) 7-414 Go to Figure 6 ``I voice n wisdom bone green'''Voice saving Ori knowledge recording season %J% Figure 7 (Suyo Noah 412)

Claims (1)

[Claims] (1) In a programmable controller that sends an output signal to the outside from an output terminal group according to an input signal supplied to an input terminal group by executing a user program; Input/output input by manual operation of a predetermined key a storage means for storing terminal information as a monitoring target; a detection means for detecting a change in the signal state of the terminal specified by the input/output terminal information; and a response to the change in the signal state detected by the detection means. A programmable controller characterized in that it is equipped with a sounding means for producing a sound.