Omron CJ2 User Manual page 184

6 Troubleshooting
Basic I/O Error (Non-fatal Error)
A basic I/O error occurs when there is an error at a Basic I/O Unit.
POWER
Lit. Not lit.
*1 Error Information
15
A408
Recovery Processing Flow
Basic I/O error occurs.
Check the location of
the error.
Replace the Unit.
Restart the System.
Error Causes and Remedies
Suspected cause of
error
A fuse is burned out.
The external power supply
is OFF (disconnected).
Other errors specific to
Units
6-18
CX-Program-
RUN ERR/ALM
Flashing. Density IO
Error
08 07 01
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.
Check the error information (A408).
Check the cause of the error, and take
measures to prevent it from occurring again.
Confirmation method
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.)
Measure the voltage at the
power supply terminals.
Check whether 24 V is
being supplied.
Refer to the manual for the
particular Unit.
Error flag
mer display
A402.12
Remedy
Replace the fuse.
Turn ON the power supply. Investigate the reason that
Same as at the left.
CJ2 CPU Unit Hardware User's Manual
Error infor-
Error code
mation
009A *1
A408
Prevention of recur-
rence
Check the maximum
switching current.
the power was turned
OFF.
Same as at the left.