Special I/O Unit Setting Error (Non-Fatal Error) - Omron CJ2 CPU UNIT User Manual

Special I/O Unit Setting Error (Non-fatal Error)

A Special I/O Unit setting error will occur if a Unit registered in the registered I/O tables does not agree
with the Unit actually connected in the PLC. A Special I/O Unit setting error will also occur if a Unit set
as a Synchronous Unit in the synchronous operation parameter settings is not actually connected in the
PLC or does not support synchronous unit operation.
POWER
Lit. Lit.
* The bit corresponding to the Unit for which the error occurred will turn ON.
Recovery Processing Flow
Check if error is caused by
synchronous unit operation
settings. (A428 to A433 will
tell you which Unit caused
the error.)
Perform the recovery procedure.
CJ2 CPU Unit Hardware User's Manual
RUN ERR/ALM
Flashing.
Special I/O Unit setting
error occurs.
Synchronous unit
operation being
No
used?
Yes
Operation
recovered?
No
Yes
Restart the system.
Error flag Error code
A402.02 0500 to
055F
Check if error is caused by
registered I/O settings.
(A428 to A433 will tell you
which Unit caused the error.)
Perform the recovery procedure.
6 Troubleshooting
Error infor-
mation
A428 to A433*
6
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