Mitsubishi MELSEC Q Series User Manual

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13.6 Resetting CPU Module
13
MULTIPLE CPU SYSTEM CONCEPT
13.6 Resetting CPU Module
The 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 CPU No.1 is reset.
If a stop error has occurred 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.
The system will not be recovered by resetting the error-stopped CPU module other than
CPU No.1.
(Example) In the case of C Controller module
POINT
1. It is not possible to reset the CPU modules of No.2 to No.4 individually in the
multiple CPU system.
If any CPU module other than CPU No. 1 is reset during operation of the
multiple CPU system, a multi CPU error (error code: 7000, MULTI CPU
DOWN) occurs in the other CPUs and the entire multiple CPU system stops.
Note that, depending on the reset timing of any CPU module other than CPU
No. 1, an error other than the multi CPU error (error code: 7000, MULTI CPU
DOWN) may stop the other CPU modules.
2. If any CPU module other than CPU No. 1 is reset, a multi CPU error (error
code: 7000, MULTI CPU DOWN) occurs regardless of the operating mode
setting (All stations stop by stop error of CPU n/Continue) on the <<Multiple
CPU setting>> tab of the C Controller setting utility. ( Section 13.7)
Figure 13.25 Resetting of multiple CPU system
CPU 0 1 2 3 4 5 6 7
Slot number
Resetting is not allowed in the multiple CPU system,
Doing so will result in "MULTI CPU DOWN" in all CPUs
in the multiple CPU system.
The overall multiple CPU system can be reset.
2
1 3
4
Slot number
Control CPU setting
1
1
3
3
243
3
3
3
41
1
1

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English