| 摘要 |
PURPOSE:To allow smooth restoration to the normal operation condition at the time of restoration of signal transmission by setting beforehand the control contents of safety side control at the time of the fail-safe operation from the main operation 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 is operated by the relay drive output from the signal stop output discrimination part 33. At the same time, the output of the signal stop output discrimination part 33 is inputted to a relay driving part 32 at the time of signal stop. Here, the signal stop output discrimination part 33 discriminates the control output, outputs the output to the relay driving part 32 at the time of signal stop 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 be relay driving part 28 at the same time. The output from the logical control part 20 is transmitted to the relay driving part 28 as it is when the control output of the specific code. |
