SYSTEM FOR SUPERVISING OPERATION TIME OF MECHANISM

PURPOSE:To improve the operation rate of a device by judging to be abnormal when a completion signal is not inputted even if a set timer time has terminated, stopping the operation of structure and restoring abnormality. CONSTITUTION:A timer memory 7 which supervises the operation time of respective structures, stores the timer time and which can be written is installed with respect to a read-only memory (ROM) 5 in which the main routine of a program is stored. A micro processor 4 reads the timer time of mechanism which operates in accordance with the order of control from the memory 7, supervises it, and shifts a system to the subsequent operation of structure when the completion signal of the operation is inputted from mechanism before the timer time terminates. When the completion signal is not inputted even after the timer time has terminated, the operation of mechanism is compulsorily stopped. When there is abnormality in mechanism, a restoring processing is executed by a manual operation, and then an input device rewrites the timer time of the timer memory, whereby the mechanism operation is executed again.