| 摘要 |
PURPOSE:To monitor and detect the state of an engineering panel at a prescribed time, by a simple constitution, by recording the initial state in a memory, and comparing it with the state obtained from a means for detecting a present state. CONSTITUTION:When adjustment, maintenance, etc. are executed by an operator in the course of operation of a system, they are executed by changing setting of an engineering panel. In order to decide whether it is proper or not when it has ended and has been returned to its original position, a central processor CPU detects a state of the engineering panel through a channel CH, and an obtained data is compared with a corresponding state diagram in a memory by a comparator CMP. As a result, in case of dissidence, it is known that the engineering panel in that case is not returned to its initial state. Accordingly, by monitoring the state immediately after the operator's operation, breakdown of a system can be prevented. |
