Led Indications - ABB RETA-02 User Manual

Diagnostics

LED indications

The RETA-02 module is equipped with three diagnostic LEDs. The
description of the LEDs in Modbus/TCP is presented below.
Name
Network Status
Colour Function
Off - Module cannot detect a link
Flashing green - Module is receiving/transmitting
Green
on Ethernet
Steady green - Module has detected a link
Off - No power or IP address
Flashing green - Waiting for connections
Steady green - At least one Modbus/TCP
Red/
connection is open against the module
Green
Flashing red - Connection timed out. No message
has been received within configured time
Steady red - Duplicate IP address
Steady green - Normal operation
Flashing red - Minor fault (e.g. communication
Red/ with application lost but recoverable)
Green
Steady red - Major fault (e.g. bad flash, failed
memory test, non-recoverable communication
problem with host)
(not used)
103
Link/Activity
Module Status
Diagnostics