Node LEDs 1 to 32 MS LED Meaning
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 39: 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 40: Operating mode LED of the MSTR1 and MSTR2 Flexi Loop accessories
9.3.6 LEDs of the MSTR2 Flexi Loop accessory
Figure 65: LEDs of the MSTR2 Flexi Loop accessory
1
Node LEDs 1 to 32
2
Operating mode LED
3
IO-Link LED
Node LEDs 1 to 32 MS LED Meaning
–
Node not found (not connected, not in opera‐
tion)
Gr
een
–
OSSD or EMSS in the ON state
Gr
een
–
OSSD or EMSS in the OFF state
Table 41: Node LEDs of the MSTR1 and MSTR2 Flexi Loop accessory
9 TROUBLESHOOTING
74
O P E R A T I N G I N S T R U C T I O N S | Flexi Loop 8015836/YT10/2016-05-24 | SICK
Subject to change without notice