Mitsubishi Electric MELSEC QS SERIES User Manual page 114

9
TROUBLESHOOTING
(2) Reading error history of the safety remote I/O module
Error history read
from safety remote
I/O module
9
- 16 9.4 Troubleshooting with GX Developer
The following describes how to check the error history read to the safety CPU module
from the safety remote I/O module.
(a) Checking the read error history
The error history read to the safety CPU module is stored into [Operation/error
log] of [PLC diagnostics]. (The error code No. of the error history is 8300.)
Also, time displayed at [Operation/error log] is the time when the error history is
read to the safety CPU module. (The error occurrence time can be checked on the
Error details screen.)
Figure 9.12 Error history display
Time when error
history is read to
safety CPU module