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6
8903/IM 8903/IP Ethernet Communications Interfaces
LED Indications
Network Status LED (NS)
Note:
A test sequence is performed on this LED during start-up.
Modbus/TCP
Colour
LED Indication
Description
OFF
OFF
No power or no IP Address set
GREEN
ON
Normal operation
GREEN
FLASHING
Waiting for connections
RED
ON
Duplicate IP Address
Figure 7. Modbus/TCP NS LED
Ethernet/IP
Colour
LED Indication
Description
OFF
OFF
No power or no IP Address set
GREEN
ON
On-line, one of more connections
established
GREEN
FLASHING
On-line, no connections established
RED
ON
Duplicate IP address
RED
FLASHING
One or more connections timed out
Figure 8. Ethernet/IP NS LED