Table 2.16: LED Indicators in Stand-Alone Mode
MeaningLEDs
Start-up phase (approx. 7 seconds)
During this phase, the redundancy role is determined.
Non-redundant device, ready
The device is operational; it is not part of a redundant set.
Permanent hardware fault detection during startup
A fatal error has been detected.
LED Indicators in Redundant Mode (RUN, ERR, and RDL)
The redundancy link LED is used to indicate if traffic via the serial line is performed. It
will flash green if a valid message is received. It will switch to red if serial communication
is lost and it will be off if no serial response has been received after startup.
2PAA114135-610 40
2 Hardware Installation
2.5 Interfaces and Display Elements
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