Mitsubishi Electric Q172CPU Programming Manual page 60

1 OVERVIEW
Category Type of error
System setting error
WDT error
Operation
Self-diagnosis error
disable errors
Other CPU DOWN error
Self-diagnosis error
Minor error
Operation
continuous
Major error
enable errors
Servo error
Motion program setting
error
(c) Use the following procedure to recover the system:
1) Check the CPU generating the error and cause of the error using the PC
diagnostic function of GX Developer.
2) If the error occurred in a Q173CPU(N)/Q172CPU(N) and the error code
is 10000, check the cause of the error using error list of SW6RN-
GSV43P.
3) Remove the cause of the error.
4) Reset the PLC CPU of CPU No.1 or restart the power.
5) Resetting the PLC CPU of CPU No.1 or restarting the power resets all
CPUs in the Multiple CPU system and the system will be recovered.
(3) Operation at a Motion CPU error
Operations at a Motion CPU error are shown below.
Does not operate from the
beginning (does not run).
Varies depending on the error.
Stops at a CPU DOWN error.
Operation corresponding to
STOP (M2000 OFF). Depends
on the "Operation mode upon
CPU stop error" setting.
Operation continues when the
continuous error occurred.
Processing stops for each
program or axis instead of the
Motion CPU stopping all the
processing.
Operation
• All actual output PY points turn OFF.
No effect on other CPUs.
• All actual output PY points turn OFF.
Other CPUs may also stop depending on
the parameter setting.
• All actual output PY points turn OFF.
• Only the applicable program stops (the
program may continue depending on the
type of error).
• Actual output PY retains output.
• No effect on other CPUs.
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