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6-11
6 Troubleshooting
CP1E CPU Unit Hardware User’s Manual(W479)
6-
1 Tro
uble
sho
otin
g CPU
Unit
Erro
rs
6
6-
1-9 CPU
E
rror
s
CPU Unit Indicators
: Not lit
: Flashing
: Lit
A CPU error or fatal error may have occurred if the ERR/ALM indicator lights during operation (RUN
mode or MONITOR mode), the RUN indicator turns OFF, and operation stops.
Reference
Note
Just as when a CPU error occurs, the RUN indicator will turn OFF and the ERR/ALM indicator will
light when a fatal error occurs. Connecting the CX-Programmer, however, is possible for fatal
errors but not for CPU errors.
If the CX-Programmer cannot be connected (online), a CPU error has probably occurred.
6-1-9
CPU Errors
CPU Unit Errors
Cause
Remedy
A WDT (watchdog) error occurred in the CPU
Unit.
(This does not occur in normal use.)
Cycle the power supply.
The Unit may be faulty. Consult your OMRON representa-
tive.
Error flag
−
Error code (A400)
−
Error information
−
POWER
RUN
INH
PRPHL
BKUP
ERR/AL
—: Irrelevant
POWER
RUN
ERR/ALM
INH
PRPHL
BKUP
—
—
—
Summary of Contents for CP1E-E**D Series
Page 3: ......
Page 66: ...2 Basic System Configuration and Devices 2 22 CP1E CPU Unit Hardware User s Manual W479...
Page 318: ...Appendices A 54 CP1E CPU Unit Hardware User s Manual W479...
Page 322: ...Index 4 CP1E CPU Unit Hardware User s Manual W479...
Page 324: ...Revision 2 CP1E CPU Unit Hardware User s Manual W479...
Page 325: ......