Mitsubishi MELSEC-Q Series User Manual page 209

4
COMMUNICATIONS BETWEEN CPU
POINT
Deselect these when using the
CPU modules except the
Universal model QCPU (except
the Q02UCPU) and the Motion
CPU (Q172DCPU, Q173DCPU).
Diagram 4.52 Multiple CPU synchronous startup setting when deselecting No.2 and No.4
Remark
The Multiple CPU synchronous startup setting cannot be made for the CPU
modules except the Universal model QCPU (except the Q02UCPU) and the
Motion CPU (Q172DCPU, Q173DCPU).
When these modules have been used, deselect the relevant CPUs at the Multiple
CPU synchronous startup setting.
For example, when using the High Performance model QCPU to CPU No.2 and
No.4, deselect No.2 and No.4.
When this function is not used (each CPU boot-up without synchronization), it is
recommended to use SM220 to SM223 (Preparation completed flag of CPUs
No.1 to No.4) of the special relay and create the sequence program to check the
boot-up of the each CPU module.
Special relay to check the boot-up of CPU No.2
SM221
0
Diagram 4.53 Program to check the boot-up of CPU No.2
U3E1\
MOV G10000 D0
Access to CPU No.2
4.5 Multiple CPU Synchronized Boot-up
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