Omron Sysmac NJ Series Network Connection Manual page 26

■LED indicators on the Sensor Communication Unit
Status Description
[PWR] indicator
- Not lit Unit power OFF state
The unit power (24 VDC)
Lit is supplied to the Slave
Unit.
[ERR] indicator
- Not lit No error
Communications Setting
Blinking
Error
Communications data
Single flash
error
Double
Application WDT timeout
flash
Flashing Boot error
Lit PDI WDT timeout
Status Description
[L/A IN] indicator
Link not established in
- Not lit
physical layer
In operation after
Flashing
establishing link
Link established in physical
Lit
layer
[RUN] indicator
Link not established in
- Not lit
physical layer
Blinking Pre-Operational state
Single flash Safe-Operational state
Lit Operational state
7. Connection Procedure
Status Description
[L/A OUT] indicator
Link not established in
- Not lit
physical layer
In operation after
Flashing
establishing link
Link established in physical
Lit
layer
[SS] indicator
Power OFF or power
- Not lit supply ON is being initial
confirmed.
Normal: The number of
Lit connected Sensors agrees
with the setting.
Sensor Error: The number
Lit of connected Sensors is
different from the setting.
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