Node LEDs 1 to 32 MS LED Meaning
R
ed
–
Sequence error occurred on the node
R
ed
– Discrepancy error occurred on the node
Gr
een (2 Hz) Red/green (2 Hz)
Node found, corresponds to expected configu‐
r
ation
R
ed/green (2 Hz) Red/green (2 Hz)
Node found, but does not correspond to the
conf
igured type or the number of nodes config‐
ured has been exceeded.
R
ed (2 Hz) Red/green (2 Hz)
Configured node not found
R
ed/green (1 Hz) Green (0.5 Hz)
Node found, but safe sensor cascade inter‐
r
upted (cable break detected).
If multiple LEDs are flashing: The connection
has probably been interrupted downstream of
the Flexi Loop node whose LED is the last one
flashing.
R
ed (node 1) Green (0.5 Hz)
Number of Flexi Loop nodes allowed not
r
eached
R
ed (node 32) Green (0.5 Hz)
Number of Flexi Loop nodes allowed exceeded
Table 41: Node LEDs of the MSTR1 and MSTR2 Flexi Loop accessory
Operating mode LED Meaning
No operating voltage, or voltage too low
Gr
een
Compatible safety controller detected, safe sensor cascade in
oper
ation
Or
ange
Safety controller found, compatibility test in progress
R
ed
No safety controller found
R
ed
Configuration required
R
ed/green
Configuration process in progress, please wait
Gr
een
Configuration saved successfully, reboot required
Table 42: Operating mode LED of the MSTR1 and MSTR2 Flexi Loop accessories
IO-Link LED Meaning
Standard IO mode
Gr
een
IO-Link mode, connection established to the IO-Link master
Or
ange
IO-Link in Pre-operate modus
R
ed
Error occurred in the IO-Link communication
or:
IO-Link output s
tage overloaded
Table 43: IO-Link LED of the MSTR2 Flexi Loop accessory
TROUBLESHOOTING 9
8015836/YT10/2016-05-24 | SICK O P E R A T I N G I N S T R U C T I O N S | Flexi Loop
75
Subject to change without notice
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