| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a programmable controller which can simulate the signal that has at least a proper simulation point. SOLUTION: This programmable controller is provided with a maintenance tool 1 which sets a simulation point and the simulation value, a ROM 2 which stores a signal simulation aptitude check program that decides the aptitude of both simulation point and value set by the tool 1 and a signal simulation program which sets again the simulation point and value that are decided improper by the check program in a proper range and also simulates the signals for the simulation point and value that are decided proper, and a CPU 3 which reads the programs out of the ROM 2 and performs its processing based on the table set in a memory 4.</p> |
