JPS59205612A - Simulation device of sequence control - Google Patents

Abstract

PURPOSE:To reduce greatly the debug work processes by displaying a simulation input/output matrix chart on a CRT screen and then displaying with process control the output which had a state change together with said matrix chart when a simulation debug is executed based on the matrix chart. CONSTITUTION:A sequence program processor 8 is provided together with a process input/output controller 9 and a display work memory 14 which reads and stores the contents of a buffer memory 10 which is provided to both processors 8 and 9 to store the sequence input/output data. In addition, a buffer memory 15 is provided to display a simulation matrix chart on the screen of a CRT4 which monitors a simulation debug of sequence. Here it is possible to set the input data of the simulation debug on the displayed simulation input/output matrix. Then the information corresponding to the output data which had a state change is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for displaying a simulated input/output matrix diagram on a CRT screen when performing simulation debugging of a sequence program using a sequence process control device, particularly a processing device, and a buffer memory provided between its input/output devices. display,
The present invention relates to a process control display device that allows input data for simulation debugging to be set from the matrix diagram, and displays outputs with state changes together with the simulated input/output matrix diagram when performing simulation debugging.

Traditionally, programmable logic controller simulation depacking is based on the logic on the processing device side,
It is an operation check, and its main content is debugging the sequence program. Hereinafter, an example of simulation depacking in a conventional sequence arithmetic processing device (corresponding to the processing device described above) will be described using a specific example.

In FIG. 1, a sequence calculation processing device 1001 includes a processing bag W8, a process input/output controller (process input/output control device) 9, and a sequence program storage memory 1.
0, a data bus 11, an address bus 12, and a data transmitting/receiving device 7. The process input/output controller 9 also has a built-in buffer memory 90 that can be accessed from the processing device 8. This memory is connected to the process to be controlled, and input/output data between the process and the sequence calculation device 1001 is transferred. The receiver can be used for passing, or it can be separated from the process and will be explained below in place of the input/output from the process.

Process control display device (also includes programming device)
It is also possible for a person to input data directly from +000. Thereafter, this memory should be actively utilized for temporary storage of various input/output data within the processing device.

It is connected to the sequence calculation device 1001 via a communication τ1 line 13. Process control display device (also a programming device) 1000 includes fur 11ware, data transmitting/receiving device 2, setting device 3, CRT/], display work memory 14, data bus 5, atto 1 bus [
3 or 1"]. Setting value 3 includes a mode switching button 31 for performing simulation depacking, a branch designation button 32 for setting a sequence program single point number, a contact designation button 33, a contact number designation button 34, and a contact point. A contact operation button 35 is provided for specifying on/off of the firmware 1.The firmware 1 includes rough 1-ware that performs the fluctuations shown in the flowchart of FIG. 2 in the form of R and OM.

To perform simulation depacking, the first step is to store the target sequence program in memory 10.
Must be stored in the eye.

A sequence program is, for example, a machine language (Figure 4) that roughly corresponds to a sequence circuit diagram as shown in Figure 3.
This is a translation. The sequence circuit in Figure 3 is
It is created on the CRTJ by sequentially operating the operation buttons 31, 32, 33, and 34 of the setting device 3. In other words, when the 81 circuit creation button in 31 is selected, 3.
The branch information from 2, the contact information from 33, and the contact number from 34 are taken in one after another and converted into machine language as shown in Figure 4.
Data transmission/reception (passes through the i-device 21 communication line 13 and data transmission/reception device 7, and is stored in the memory 10).

(The one in FIG. 4 has no meaning and is ignored regardless of its value.) Generally, several sequence programs are stored in the memory 10 in this way.

The second stage of simulation depacking is circuit readout. This is to read out from the memory 10 a specific sequence program for which simulation depacking is desired. Mode selection button S on setting device 3
2 and then operate 0.34 + vool at 33. ■ The sequence programmer 11 represented by the output contact number 001 is transferred from the memory 10 to the display work memory 14, and the CRT 4 will be displayed. The operation of the firmware I at this time is as shown in the section of circuit reading in FIG.

The third stage of the simulation depack is this sea) 1
Taking the example of FIG. 3 as an example, data (on/off state) is set to the input contacts used in the program, X0O1, X0O2, and X0O3. To do this, use 83 of the setting device 31, the contact number designation button 34, and the contact button 35 to designate on/off.
]Kuchioka, Roro] Loco 3, set X0O3=OFF. At this time, the operation of the firmware 1 is as shown in the section of human output setting in Figure 2. The value set from the input/output setting number (in this example, X0O1= 1, X0O2=
O, X0O3=0) are stored in human output buffer memories 911, 912' and 913, respectively, of the process input/output controller 9, as shown in FIG.

Originally, the input contact on the production equipment side was 961°962.96
The signal input from 3 was set from the process control display device (also a programming device) 1000 side. Since this human output buffer memory is constantly scanned by the processing unit, this value is immediately stored in the processing unit 8.
It will be taken in and used for sequence calculations.

Next, in the fourth step, by operating 84 of the setting device 3, the processing device 8 performs sequence calculations on the sequence program currently displayed on the CRT 4. Using , yooi=o is obtained. This value of yool is stored in the input/output buffer memory 921 in FIG. At this time, as shown in the simulation section of Figure 2,
The values of OI, X0O2, X0O3°YOOI are taken into the display working memory 14 from the process input/output controller 9 and displayed on the CItT4.

Finally, in the fifth step, by operating s4 of the setting device 3, the software 1 performs the operation shown in the section of output state change in FIG. 2.

That is, the states of all output contacts are compared before and after pressing the button S5, and the output contacts that have changed are displayed on CBr4.

For example, in the sequence program shown in FIG. 3, after setting the on/off state (1 or 0) in the input/output buffer memories 911, 912 and 913 in FIG. 5 corresponding to the input contacts X0OI, X0O2, and X0O3, 84 simulation debugging. The output contact before this simulation debugging, YOOI (Fig. 5 2)
921) in the display working memory 14 in FIG.
43 and compared with the state of '1001-YOON after simulation debugging stored in 144. At that time, change the output contact Y001 to the 8th
Display as shown.

As described above, simulation debugging is performed through five stages. However, the problem with this simulation debugging is the setting of data (on/off state) for the input contacts in the third stage. Settings must be done manually by pressing specific buttons.

For example, when you want to set the data of X0O1=1, the actual number of button presses is S3 of the first setting device 37, contact number 34 5 times of ti, ti, ti, oF, and the contact specifying on/off. The button 35 is ruled once, a total of 7 times. Setting the data of one input contact requires manual work of pressing a button seven times.If it becomes necessary to set the data of a large number of input contacts, the amount of work is extremely large. It becomes time-consuming. In fact, this simulation debugging method requires a lot of time and effort to be done manually by one person.
This has become a major problem.

The present invention solves this problem, and C
On the R'I screen, a simulated entry/exit switch [-Risk diagram is displayed as the front page,
By utilizing this, a simulated input/output setting device and a process control display device are provided which enable simulation debugging of logic and operation checks to be executed with simple manual operations.

The gist of the invention is to use a novel process control display rather than a conventional process control display.

This new process control display device Iθ00 shown in FIG.
Compared to the conventional one shown in FIG. 1, this has a new buffer memory 15, and this buffer memory is
It is possible to store input and output data. In FIG. 9, the same reference numerals as in FIG. 1 indicate the same parts. The new process control display device displays a simulated input/output matrix diagram 16 as shown in Figure 1O on the CBr4 in order to simplify the manual data setting work for simulation debugging.

The buffer memory 15 newly provided in the present invention is used to store the display data of the simulated input/output matrix shown in FIG. 16. This buffer memory is
Address bus 6, data bus 5. The data transmitting/receiving device 29 can transmit and receive data to and from the buffer memory 90 in the process input/output controller 9 via the communication line 13 .

Here, implementation of simulation debugging will be explained in detail, taking as an example a sequence circuit shown at 10A in FIG. 6, with a focus on checking the operation of the logic sequence.

At the input/output contact at 10A, xooi is now on (1),
It is assumed that xO02 and xO03 are in the off (0) state. At that time, the buffer memory 9o in the process input/output controller 9 in FIG. 9 is in a state as shown in FIG. 11. In addition, this content is transferred as it is to the buffer memory 15 for displaying the simulated input/output matrix diagram, and the buffer memory 15 becomes in the state shown in FIG. 12.
Output contacts YOOI, 'I'002. denoted by 921, 922, 923 in FIG. The state of VOO3 is the 7th
As shown in the figure, it is also stored in 143 of the display working memory 14.

This storage of the output connection state is used for comparison before and after simulation debugging. In addition, the simulated entry/exit cuff 1-litus diagram display screen on the CRT 4 at this time is the 13th
Shown in the figure. In this figure, the contacts marked O (black circle) are on and 0 (white circle). The contact point is
It's raining when it's off. Here, the input/output data of the third stage of simulation computer debugging, which had a problem with the conventional method, is set. However, the method of the present invention uses the simulated input/output data displayed on the CRT screen instead of the conventional method of pressing a button. -Use the risk diagram (Figure 13). In other words, you can use the input contacts in the simulated input/output matrix diagram 1 to change the state of the office computer by touching the CRT with a pen (or by using a device that performs the same function). (using) to provide guidance.

The specified input contact's on/off state is reversed.

For example, if you specify xool and x003,
x001 changes from on to off, x003 changes from off to on, and the simulated input/output matrix diagram on the screen changes as shown in FIGS. 13 to 14. At the same time, the buffer memory for displaying the simulated input/output matrix diagram changes the state 1511 of xool in FIG. 12 from 1 to 0, and
The state 1513 of 3 changes from 0 to 1 as shown in FIG. Then, the contents are transferred to the buffer memory 90 in the process input/output controller 1-roller 9 in FIG.
and 0 are reversed and change to 91L913 in Fig. 16.

Here, during the fourth stage of simulation debugging, sequence calculations are performed by the processing device 8 in FIG. 11, and in this example, X0O1=0, X0O2=O
, X0O3= i (7) Using the value, YOO1= 1
The buffer memory 90 of the process input/output controller is obtained from FIG.
] DR2001 l) A 1' The value of A changes from 0 to 1. This condition J'' is shown in Fig. 9 as a simulated input/output hook I-
The data is transferred to the risk diagram display buffer memory 15, and the buffer memory 15 becomes as shown in FIG. Cultivate that information1
(': 4'C'' displayed on RT < m input/output cuff 1-
The state of ■001 in the Ricks diagram changes from O (white circle mark) to O (black circle mark) as shown in Fig. 14, as shown in Fig. 18.

Here, the fifth stage 1π of the simulation depack' is performed. In other words, by operating the setting bag 3 84 in FIG. 9, the firmware 1 can be set to
The output contact status of the buffer memory for risk diagram display and the seventh
Compare the output contact states before simulation debugging (not shown in 143 in the figure), and select the output contact vO old that has changed as the first
The image is displayed on the CRT as shown at 181° and 182 in Fig. 8.

As shown in -1- below, when performing simulation debugging, the present invention allows pressing the setting button, which conventionally required a lot of manual work to set input contact data, to CR,
It is sufficient to simply touch the input contacts on the simulated turnout 71 to risk diagram displayed on the T screen with a light pen, and the number of work steps for simulation debugging is greatly reduced.

Assuming that the time required for one button press is the same as the time required for one Bentouch, the input data setting using the Lie 1-Pen will be shorter than that using the push button.
It will be shortened to one-seventh.

In addition, a 71 helix diagram is displayed on the screen, making the status of all input and output contacts clear and visible at a glance, making it easier to operate and reducing data setting errors.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams of a conventional example, and FIG. 3 is an explanatory diagram of a conventional example. Figure 6 shows an example of a sequence relay ladder circuit diagram, Figure 4 shows an example of a sequence program translated into machine language, Figure 5 shows an explanatory diagram of the input/output buffer memory, and Figure 7 shows the working memory for display. 8 is an explanatory diagram of the CRT after simulation debugging, FIGS. 9 and 10 are explanatory diagrams of the present invention, and FIGS. 11 to 18 are explanatory diagrams of the simulated computer debugging in the present invention. Figures are shown respectively. 8... Processing device, 9... Process input/output controller 1 to roller, 10... Sequence program storage memory, 4
...CRT, 14...Display working memory, 15...
Matrix $3 Moonflower 4th Eye 5th Eyebrow 6 Eye 1: Kaya 7 Prisoner Kaya 3rd Eye 70th Mouth 4 Thatch Kaya! 7 Item 5 Kaya 18 Oral Procedures Amendment (Zaikin Patent, 1 Agency Director 'i'1 Kazuo Wakasugi J: List of 19 cases) i. 1982'+ll Grant Application No. 79893 Invention's reputation, Zokunsu Control Simulation /Con device sleeve 11・relationship with ``li fi hiii'l'l°KQt1 person 2・('1(he11・)((ceremony Ll: II
Manufactured by State Name: Hitachi Control Zosdems Co., Ltd.

Claims (1)

[Claims] 1. It has a sequence program processing device and a process input/output device, a buffer memory provided between these devices for storing input/output data of the sequence, and a display work memory for reading and storing the contents of the buffer memory. ,
When performing simulation debugging of a sequence, it has a function to display a simulated input/output matrix diagram on the screen of the CRT used for monitoring, and a buffer memory for this purpose, and the input data settings of the simulation depack can be displayed in the simulated input/output matrix diagram. A sequence control simulation characterized in that settings can be made on a diagram and information corresponding to output data that has changed status is displayed.