Omron CJ2 CPU UNIT - Basic I;O Error (Non-Fatal Error)

6 Troubleshooting
6-18
CJ2 CPU Unit Hardware User’s Manual
A basic I/O error occurs when there is an error at a Basic I/O Unit.
*1 Error Information
z Recovery Processing Flow
z Error Causes and Remedies
Basic I/O Error (Non-fatal Error)
POWER RUN ERR/ALM Error flag Error code
Error infor-
mation
Lit. Lit. Flashing. A402.12 009A
A408
*1
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
A fuse is burned out. Measure the voltage at the
power supply terminals.
Check whether 24 V is
being supplied. (Check
whether the problem is
solved by replacing the
fuse.)
Replace the fuse. Check the maximum
switching current.
The external power supply
is OFF (disconnected).
Measure the voltage at the
power supply terminals.
Check whether 24 V is
being supplied.
Turn ON the power supply. Investigate the reason that
the power was turned
OFF.
Other errors specific to
Units
Refer to the manual for the
particular Unit.
Same as at the left. Same as at the left.
15 08 07 01
A408
Number of slot where the Unit with the error is
mounted in binary.
Number of Rack where the Unit with the error is
mounted in binary.
Basic I/O error occurs.
Check the location of
the error.
Check the error information (A408).
Replace the Unit.
Check the cause of the error, and take
measures to prevent it from occurring again.
Restart the System.