JPH03286303A - Sequence control test system - Google Patents

Abstract

PURPOSE:To facilitate the correction of the plant simulation information by transmitting a signal generation pattern to a sequence controller from a personal computer and producing the signals within the sequence controller. CONSTITUTION:A generation pattern table of a soft simulator contained in a sequence is obtained when a personal computer transmits the signals produced from a sequence diagram and registered via the communication processing. Meanwhile a trace signal table is obtained when the personal computer registers the signal produced from the sequence diagram and registered as a trace output subject signal and then transmits this signal via a communication processing. Then the specifications of both DI and DO signals are set to a trace data table via the trace collecting function of the simulator. The contents of this table are sent to the personal computer and printed by a printer as an action record. Thus the correction is facilitated for the setting data used for production of signals.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a test method for a sequence circuit program incorporated in a sequence system #4 device.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 61-204708, the conventional method is to input setting information from the man-machine device and output information to external plant equipment in a sequence control device equipped with a man-machine device. By transmitting the information to the memory, performing calculations in the sequence program section based on this information, and transmitting the results only to the output buffer memory and displaying them on the man-machine device, sequence control operations can be performed without connecting a simulated input panel. I have already carried out the confirmation.

[Problem to be solved by the invention] In the conventional sequence control device, as described in 1 below, information is set in the input buffer sofa from the man-machine device, this information is analyzed by the sequence calculation section, and data is set in the output buffer. The information set on the output sofa was displayed on a man-machine device to check the operation of the sequencer, but
There was a problem with the following content.

(1) When checking the operation of a sequence, it is necessary to check multiple patterns such as abnormality handling tests even on the same route, and it is necessary to have a function to easily correct the information generated on the plant side.

(2) If the test results of the sequence control device are confirmed using a man-machine device, the probability of human error occurring increases. Therefore, the accuracy of confirmation can be improved by collecting data as trace information, outputting the collected results to a printer, and checking them on a desk. can be improved.

(3) In order to easily test the sequence control device, this simulator can be started and stopped.

(4) When checking the operation of a sequence control device, usually equipment is not operated alone, but multiple equipment is operated simultaneously. Therefore, it is necessary to have a function that allows not only sequential operation of one piece of equipment, but also sequence operation of multiple pieces of equipment at the same time.

[Means to solve the problem] In order to achieve the above objective, the following means were adopted.

(1) In order to easily simulate information generated on the plant side, a personal computer is prepared as a man-machine device.
Register the signals generated on the plant side. On your computer,
Since the registered data can be recalled and corrected, testing can be performed using multiple patterns of data by sending the corrected data to the sequence control device.

(2) To record the operation of the sequence control device,
A signal to be collected is transmitted to the sequence control device in advance, and data is collected at the timing when the state of this signal changes from ○N to ○FF or 0FF-4ON. After the test is completed, the collected data is sent to a computer, edited on the computer, and then output to a printer as an operation record.

(3) To start and stop the simulator, set the flag in the sequence control device to 1 or 0 when starting and stopping from the personal computer. The sequencer program monitors this flag, determines the state of this flag, and starts or stops the simulator.

(4) To run multiple equipment sequences at the same time,
Define condition signals and output signals for each piece of equipment and create a table. The simulator periodically searches this table and outputs an output signal when conditions are met, thereby enabling simultaneous operation of multiple facilities.

[Effect]

The sequence control device in this invention is a man-machine device that can easily modify plant simulation information,
In addition, testing and confirmation of sequence control can be performed not only by man-machine equipment, but also by collecting the signal generation status as trace information and outputting it to a printer as an operation record. Additionally, by making it possible to start and stop the simulator, and by having the ability to operate multiple facilities at the same time, we aim to improve the confirmation accuracy of sequence operation tests.

〔Example〕

An embodiment of the invention will be described below with reference to FIG. A sequencer, which shows the overall configuration of one system in FIG. 1, performs input/output processing of DI signals and Do times signals via a plant and process input/output devices. DI signals taken in from the process input/output device are stored in the input/output table. After that, it is processed by a user program or a sequence program, and when it is set in the input/output table as an output signal, the D○ times signal is outputted to the plant via the process input/output device. Therefore, by incorporating a software simulator in the sequencer to automatically generate signals generated on the plant side and setting them in the input/output table, it is possible to simulate the processing on the plant side.

The software simulator built into the sequencer has "signal monitoring function,""signal generation function," and "trace collection function," and the PC functions include "generated signal registration function,""trace output function," and "simulator." It has start and stop processing functions.

Next, FIG. 2 will be explained. Here, the relationship between the sequence diagram, the 6 generation pattern table which is a table of the software simulator built into the sequence control device, and the trace signal table is shown. The occurrence pattern table is created by transmitting the occurrence signals registered as occurrence signals from the sequence diagram on the computer through communication processing. , and an output section that outputs a signal after the condition is satisfied. The trace signal table is registered as a trace output target signal when it is registered as a generated signal from a sequence diagram on a personal computer, and is generated after transmission in communication processing. The trace signal table registers signals to be traced.

Next, FIG. 3 will be explained. This figure shows the contents of the trace data table.

The specifications of the DI signal and the incoming signal are set in the trace data table by the trace collection function of the simulator. The contents of this trace data table are sent to the personal computer and printed as an operation record on the personal computer's printer.

FIG. 4 shows the processing flow of the signal monitoring function of the simulator.

In block 05, the case movement indicating the counter of the occurrence pattern table is initialized and the equipment section is read. In block 10, the signal address, which is the condition part of the occurrence pattern table corresponding to the equipment section and the case list, and the ON or OFF
The detection classification indicating the classification is imported. At block 15,
The state (ON or 0FF) of the input/output table corresponding to the signal address is taken in and compared to see if it matches the state of the detection category. If they match, it is determined in block 50 whether all conditions for one case have been confirmed, and if not, the process returns to block 10. If all the signals are in accordance with the state of the detection category, block 55 starts the signal generation program. If there is a discrepancy in block code 5, in block 20, the case value in the occurrence pattern table is updated. At block 25, it is determined whether the condition section for all cases corresponding to the equipment section has been confirmed, and if all cases have not been completed, the process returns to block 10. If finished,
In block 30, the case destination is initialized, and in block 35, the equipment section is updated in order to perform sequence control of the next equipment.

In block 40, it is determined whether all the equipment has been checked, and if the confirmation has not been completed, the process returns to block 10. If all is completed, stage @Na is initialized again in block 45,
Check the condition part of the occurrence pattern table from the beginning. This processing flow is repeated until a stop request is received from the personal computer.

FIG. 5 shows the processing flow of the signal generation function of the simulator.

When the signal generation program is started at block 55 in FIG. 4, first, at block 05, the signal address of the output section of the generation pattern table corresponding to the corresponding equipment section and case shame is acquired.Then, at block 10, the signal address is first input. , similarly capture the signal generation time. Similarly, in block 15, ON or OF
The detection category indicating the F state is captured. At block 20, the same data as the state of the detection section is set in the input/output table corresponding to the signal address. If the occurrence time is O in block 25, it is determined that the reset of the signal set in block 20 is not necessary, and if 6 hours to end is set, in block 30, the occurrence time is set to 1-. After the time has elapsed, at block 35, block 20
Reset the state of the signal set in .

FIG. 6 shows the processing flow of the trace collection function of the simulator.

In block 05, a case floor indicating a counter of the trace signal 3 table is initialized. In block IO, the state of the input/output daple corresponding to the addresses for all cases in the trace signal table is set to the previous state for each address. Block] 5 reads the number of cases in the trace signal table.

At block 20, the address and previous state of the trace signal table corresponding to the designated case are fetched. In block 25, compare the previous state with the state of the input/output table corresponding to the address, and if -M, block 45
, enter "Address" and "Input/Output Classification" in the trace data table.

The data of "occurrence time" and "change content" are sent to Sera 1 and the number of cases is updated. Next, in block 50, the previous state data of the 1-race signal table is matched with the state of the attendance table. If there is a disagreement in block 25, the case shame is updated in block 30, and in block 35, it is determined by comparing the number of cases and the case shame whether or not the trace signal No. 1 table has been checked for all cases. If not completed,
Return to block 20. If the process is finished, the case operation is initialized in block 40, and the trace collection process is repeated again from the first case. This process is repeated until a stop request is received from the computer.

〔Effect of the invention〕

According to the present invention, compared to conventional generation, (1) setting data for signal generation can be modified;

(2) Test results from the sequence control device are printed out as an operation record.

(3) It is possible to start and stop the simulator.

(4) By setting signal generation data for each equipment,
Tests similar to actual driving can be performed.

It is excellent in that it can further improve test efficiency and confirmation accuracy.

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram showing an embodiment of the sequence control test method according to the present invention, and Fig. 2 shows a "generation pattern table" for signal generation and a "trace signal table J" for trace collection corresponding to the sequence diagram. The figure shown in Figure 3 is a table for storing data after trace collection.
Figure 4 is a flowchart of the signal monitoring function, Figure 5 is a flowchart of the signal generation function, and Figure 6 is a flowchart of the signal generation function. J Figure 2 Figure 4 Figure 6

Claims (1)

[Claims] 1. A system that connects a computer system and a sequence control device. When a startup command is output from the computer, processing is started in the sequence control device, and plant equipment and process input are started according to the sequence program installed in the sequence control device. In a system that performs sequence control via an output device, when testing the operation of the sequence control device, do not connect an external simulated input/output board to the process input/output device, but connect a personal computer and input signals from the plant side. A sequence control test method characterized by inputting a signal generation pattern into a personal computer, transmitting the inputted signal generation pattern from the personal computer to a sequence control device, and generating a signal while decoding this signal generation pattern within the sequence control device. .