LD PLC METHOD FOR VERIFYING PLC INSTRUCTION USING LD PROGRAM

摘要

The present invention relates to a method for verifying PLC commands executed in a PLC system. The present invention includes a PLC system selecting step, a step of extracting input data and prediction data of a PLC command from a test case, a step of loading an LD program into a PLC system, a step of inputting input data into an LD program, Extracting a result as output data, and verifying the PLC command by comparing the predicted data and the output data. According to the present invention, it is possible to reduce the inconvenience of writing an LD program for each PLC command by verifying the PLC command by using the LD program, and it is possible to cope flexibly with the verification environment.