Non-Fatal Errors; Errors Created With For Fal Instructions; Flash Memory Errors - Omron CP1L-EL20DR-D Operation Manual

Troubleshooting

12-2-5 Non-fatal Errors

Errors Created with for FAL Instructions

Flash Memory Errors

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.
A non-fatal error has occurred if both the RUN indicator and the ERR/ALM
indicator are lit during operation (i.e., in RUN or MONITOR mode).
■ CPU Unit Indicators
POWER
RUN
ERR/ALM
INH
LNK/ACT
BKUP
Information on the non-fatal error can be obtained from the Error Tab Page of
the CX-Programmer's PLC Error Window. Take corrective actions after check-
ing error details using the display messages and the Auxiliary Area Error
Flags and error information.
• Errors are listed in the following table in order, with the most serious ones
first.
• If two or more errors occur at the same time, the most serious error code
will be stored in A400.
A FAL instruction was executed in the program to create a non-fatal error.
Probable cause
The executed FAL number 001 to 511 will
be stored in A360 to A391. The number 4
will be added to the front of 101 to 2FF
(which correspond to executed FAL num-
bers 001 to 511) and the result will be
stored in A400 as error code 4101 to
42FF.
■ Reference Information
Error flag
Error code (A400)
Error information
Probable cause
A315.15 will turn ON when writing to the
internal flash memory fails.
POWER
RUN
ERR/ALM
INH
BKUP
LNK/ACT
Check the conditions for executing FAL
instructions and remove any causes of
the user-defined error.
FAL Error Flag, A402.15
4101 to 42FF
None
Replace the CPU Unit when the internal
flash memory has been written to more
than 100,000 times.
Section 12-2
Lit
Lit
Flashing
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Possible remedy
Possible remedy
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