When "Err." Led On The Safety Master Module Turns On Or Flashes With "Run" Led On The Safety; Master Module Being On - Mitsubishi Electric MELSEC QS Series User Manual

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TROUBLESHOOTING
9.2.2 When "ERR." LED on the safety master module turns ON or flashes
with "RUN" LED on the safety master module being ON
There is duplication of the
safety master stations on
the same line.
Yes
Use only one safety master
station on the same network.
No
Turn on the remote station.

9.2.2 When "ERR." LED on the safety master module turns ON or flashes with "RUN" LED on the safety

The "ERR." LED on the
safety master module
turns ON or flashes.
Does the setting in network
parameters match the implementedsystem
configuration? (Check if SW009C to SW009F
(buffer memory address 69C
H
to 69F ) are 0s.)
H
Yes
Is BBC5 (master module duplication error)
stored in the link special register SW006A
(switch setting status) of the safety
master module?
No
Check data link status
station
of the safety master .
(Check this with the host station monitor
of the CC-Link diagnostics.)
Data linking
Check status of other stations on the other
station monitor of the CC-Link
diagnostics, and identify a remote station
with a link error.
Is the remote station powered on?
Yes
Is the remote station a safety remote station?
Yes
1
9.2 Check with LEDs (1) - at System Start-up
No
Modify the setting in network
parameters or the implemented
system configuration.
Stop Data linking
Is the scan time not too long
for each transmission speed?
No
No 2
Yes
Shorten the sequence program.
Or, use slower transmission
speeds.
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