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12
TROUBLESHOOTING
12.5 Error codes returned to request source during communication with CPU module
12 - 74
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
Table12.10 Error code (Continue)
Error code
(Hexadecimal)
Error item Error details Corrective action
42A0
H
CPU access
password
mismatch
The CPU access password is mismatched.
• Check whether the CPU access password is correct or
not.
• Register the CPU access password again.
42A1
H
CPU access
password is
not registered
with CPU
module
The CPU access password is not registered
with the CPU module.
Register the CPU password and execute the command.
42A2
H
Exclusive
control ID
mismatch
The authentication of write operation or
remote operation failed.
• Redo the write operation from the beginning.
• Redo the remote operation from the beginning.
42A3
H
Change mode
specification
error
The specification value of the safety CPU
operation mode is out of range.
Check whether the mode other than the TEST MODE or
SAFETY MODE is specified or not.
42A4
H
Safety CPU
operation
mode change
error
An attempt was made to switch the safety
CPU operation mode to the TEST MODE in
the TEST MODE. Or an attempt was made to
switch the Safety CPU operation mode to the
SAFETY MODE in the SAFETY MODE
(including a wait-for-restart).
Check whether an attempt is made to switch the current
safety CPU operation mode to the same mode or not.
42A5
H
Command that
cannot be
executed in
SAFETY
MODE
The operation that cannot be executed in the
SAFETY MODE has been performed.
Perform the operation after switching to the TEST
MODE.
42A6
H
Command that
cannot be
executed in
the wait-for-
restart status
The operation that cannot be executed in the
wait-for-restart status has been performed.
Execute the operation after restarting the CPU module.
42A7
H
Safety CPU
operation
mode
switching
disabled (from
TEST MODE
to SAFETY
MODE)
The safety CPU operation CPU mode could
not be switched from the TEST MODE to the
SAFETY MODE.
Check that a stop error has not occurred in the CPU
module, make the CPU module STOP and perform
safety CPU operation mode switching.
42A9
H
Communica-
tion CRC error
The CRC error occurred during
communications with the CPU module.
Execute the online operation again.
42AA
H
During the
write exclusive
control
Cannot be executed during the write
operation.
Start after the current online operation has been
completed.
42AB
H
Already started
in the other
starting source
The online operation is performed from the
other starting source.
Start after the online operation performed from the other
starting source has been completed.
42AC
H
Write exclusive
control is not
performed
The write operation procedure is not correct. Redo the write operation from the beginning.