| 摘要 |
<p>PROBLEM TO BE SOLVED: To confirm the control program of a PLC by operating a real machine without previously verifying it. SOLUTION: Data constituting a time chart T prepared by a computer 3 are converted into data which can be communicated between a computer 3 and a PLC 2, edited, and stored, and an automatic simulation program is executed based on the storage data. Then, only input signal data to the PLC 2 in the storage data can be used, and the input signal is automatically transmitted from the computer 3 to the PLC 2 successively at a set lapsed time, and an output signal from the PLC is transmitted to the computer 3. Thus, the transmission of the input and output signal between the computer 3 and the PLC 2 can be automatically performed. Then, the control program of the PLC 2 is executed, and the situation is displayed on a screen.</p> |
