Mitsubishi Electric QS001CPU User Manual page 181

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