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13.7 Operation at CPU Module Stop Error
13
MULTIPLE CPU SYSTEM CONCEPT
POINT
When a stop error occurs, a multi CPU error (error code: 7000, MULTI CPU
DOWN), occurs in the CPU on which the error was detected.
Depending on the timing of error detection, a "MULTI CPU DOWN" error may be
detected in a CPU of "MULTI CPU DOWN" status, not the first CPU on which a
stop error occurs.
For example, if a stop error occurs in CPU No.2 and CPU No.3 is halted due to
the error, CPU No.1 may be halted because of the stop error on CPU No.3
depending on the timing of error detection
Because of this, CPU No. different from the one of initial error CPU may be stored
in the error data's common information category.
To restore the system, remove the error cause on the CPU that is stopped by an
error other than "MULTI CPU DOWN".
In Figure 13.28, the cause of the CPU No.2 error that is not "MULTI CPU DOWN"
is to be removed.
Figure 13.27 Detection of stop error
Figure 13.28 Error display by System information
2
2
2) Stop due to stop error detection of CPU No. 2.
("MULTI CPU DOWN" occurs.)
3) May stop with stop error detection of CPU No. 3
depending on the error detection timing.
("MULTI CPU DOWN" occurs.)
1) Stop with "PARAMETER ERROR".
CPU
012 34
Slot number
Control CPU setting
Error other than
MULTI CPU DOWN
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