2 MULTIPLE CPU SYSTEM
2.1.5 How to reset the Multiple CPU systemThe entire Multiple CPU system can be reset by resetting CPU No.1.
The CPU modules of No.2 to No.4, I/O modules and intelligent function modules will be reset when PLC CPU No.1 is reset.
If a stop error occurs in any of the CPUs on the Multiple CPU system, either reset CPU No.1 or restart the Multiple CPU system (power supply ON OFF ON) for recovery.
(Recovery is not allowed by resetting the
POINT
(1)It is not possible to reset the CPU modules of No.2 to No.4 individually in the Multiple CPU system.
If an attempt to reset any of those PLC CPU modules during operation of the Multiple CPU system, a "MULTI CPU DOWN (error code: 7000)" error will occur for the other CPUs, and the entire Multiple CPU system will be halted. However, depending on the timing in which any of PLC CPU modules other than No.1 has been reset, an error other than the "MULTI CPU DOWN" may halt the other PLC CPUs/Motion CPUs.
(2)A "MULTI CPU DOWN (error code: 7000)" error will occur regardless of the operation mode(All stop by stop error of CPU "n"/continue) set at the "Multiple CPU setting" screen when any of PLC CPU modules of No.2 to No.4 is reset. (Refer to Section 2.1.6.)
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