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Error Processing Section 9-2
9-2-5 Error Tables
The following tables show the errors which can occur in the FQM1 and indi-
cate the probable cause of the errors.
Note Always confirm the safety of connected equipment before turning the power
supply OFF or ON.
CPU Errors If the following LED indicator condition appears during operation (in RUN or
MONITOR mode), it indicates that a CPU error has occurred. The CX-Pro-
grammer cannot be connected if a CPU error has occurred.
If a fatal error occurs, the RDY and ERR indicators will be lit and the RUN indi-
cator will be OFF, but a CX-Programmer can be connected. This difference
can be used to distinguish between a CPU error and other fatal errors.
CPU Standby If the following LED indicator condition appears when the power is turned ON,
it indicates that the FQM1 is in CPU standby status.
When the FQM1 is turned ON, cyclic servicing starts after the Coordinator
Module recognizes all of the connected Motion Control Modules. Operation
can be started at that point.
If the startup mode is RUN or MONITOR mode, the FQM1 will remain in
standby status until all of the Motion Modules have been recognized..
Fatal Errors If the following LED indicator condition appears during operation (in RUN or
MONITOR mode), it indicates that a fatal error has occurred..
The fatal error’s error contents will be displayed in the Error Tab in the CX-Pro-
grammer’s Error Window. Determine the cause of the error from the error
Power Supply
Unit Indicators
Module Indicators
POWER RDY RUN ERR PRPHL COMM1 COMM2
Lit OFF OFF Lit --- --- ---
Operating
status
Error
name
Error flags
in Auxiliary
Area
Error code
(in A400)
Error con-
tents
Probable cause Remedy
Stopped CPU
error
None None None A WDT (watchdog timer)
error occurred in a Module.
(This error does not nor-
mally occur)
Turn the power OFF and
restart. The Module may be
damaged. Contact your
OMRON representative.
Power Supply
Unit Indicators
Module Indicators
POWER RDY RUN ERR PRPHL COMM1 COMM2
Lit OFF OFF OFF --- --- ---
Operating
status
Error
name
Error flags
in Auxiliary
Area
Error code
(in A400)
Error con-
tents
Probable cause Remedy
Stopped CPU
standby
None None None A Motion Control Module
has not started properly.
Replace the Motion Control
Module.
Power Supply
Unit Indicators
Module Indicators
POWER RDY RUN ERR PRPHL COMM1 COMM2
Lit Lit OFF Lit --- --- ---