9 Troubleshooting and Maintenance
9-50
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
Event name Master Function Enable/Disable Failed Event code 7460 0000 hex
Meaning An operating error occurred when enabling or disabling the master function.
• Master Function Enable Switch (device variable *_Sw1MstrEnblCmd)
• Master Function Disable Switch (device variable *_Sw1MstrDsblCmd)
Source PLC Function Module Source details CJ-series Unit Detection
timing
At user operation
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation Not affected.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
An attempt was made to enable the
master function when it was already
enabled.
Disable the master function before
you enable it.
Disable the master function before
you enable it.
An attempt was made to disable the
master function when it was already
disabled.
Enable the master function before you
disable it.
Enable the master function before you
disable it.
CPU Unit is not in PROGRAM mode. Change the CPU Unit to PROGRAM
mode.
Change the CPU Unit to PROGRAM
before you enable or disable the mas-
ter function.
More than one software switch
changed to TRUE at the same time.
Or, another software switch changed
to TRUE before processing was com-
pleted for a previous software switch.
Execute the software switch opera-
tions one at a time.
Execute the software switch opera-
tions one at a time.
Attached
information
None
Precautions/
Remarks
None
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