| 摘要 |
PURPOSE:To obtain a fail safe operation suited for the condition where the controlled object has at that time by making it possible to provide beforehand the control contents of safety side control at the time of fail safe operation from the main control panel side at every terminal. CONSTITUTION:A signal stop output discrimination part 33 is provided, a relay drive output of a logical control part 20 and the output of a control signal discrimination part 22 are inputted to the signal stop output discrimination part 33, and a relay driving part 28 operates by the relay drive output from the signal stop output discrimination part 33. The signal stop output discrimination part 33 discriminates the control output from the control signal discrimination part 22, outputs the output to a relay driving part at the time of signal stop 32 when the control output is the special control output, and cuts off transmission of the relay drive output from the logical control part 20 to the relay driving part 28 at the same time. The main operation panel discriminates the control output at the time of fail safe from the control output at the normal time by adding the code to the specific output. |
