Mitsubishi Electric QS001CPU User Manual page 171

12
TROUBLESHOOTING
Error
Code Error Contents and Cause
(SD0)
Safety monitoring timeout error (A
8426 timeout error occurred during safety
communication.)
8430
8431
Safety station reception data error
(Incorrect data is received.)
8432
Safety connection setting error
8440
(Incorrect CID is received.)
Annunciator (F) was set ON
9000 (**** in the error message indicates the
detected annunciator number.)
*3 This applies when the serial number (first five digits) of the CPU module is "13042" or later.
Corrective Action
• Check that the following operations
are not performed.
1) Switching the operation mode
2) Writing the program memory to
ROM
3) Registration/change of the CPU
access password
4) Initialization of PLC memory
5) Monitoring, diagnostics
(If executed, this error may occur due
to the increase of the interval
between data communications of CC-
Link IE Field.)
• Set the larger value for the safety
refresh monitoring time. Or set the
smaller value for the transmission
interval monitoring time.
• It may be malfunction due to noise.
Check the soundness of transmission
path by performing the CC-Link IE
Field Network diagnostics. Check the
distance between power lines and
communication cables, and the
installation status of each device as
well.
It may be malfunction due to noise.
Check the soundness of transmission
path by performing the CC-Link IE Field
Network diagnostics. Check the
distance between power lines and
communication cables, and the
installation status of each device as
well.
Check that safety connection is
correctly set for own station.
Read the individual information of the
error using the GX Developer, and
check the program corresponding to the
numerical value (annunciator number).
12.3 Error Code List
12.3.8 Error code list (8000 to 9000)
9
Corresponding
CPU
10
11
*3
QS
12
*3
QS
*3
QS
QS
12
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