| 摘要 |
PURPOSE:To clear up the cause of nonconformity of sequence processing by providing a mode selecting part which selects a fault investigation mode and a normal sequence processing mode properly and an RAM stored with a fault investigating program. CONSTITUTION:If nonconformity occurs, an operator inputs the fault investigating program from an input circuit 201k and the program is stored in the RAM201j. Then, the mode selecting part 201i sets a programmable controller (PC) device 2 in fault investigation mode. Consequently, a processor 201e reads the sequence program out of an EPROM201a for every instruction, to perform the sequence processing. After the sequence processing is all completed, the cause is cleared up by the fault investigating program stored in the RAM201j. |
