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2.3 LED Diagnostic and Status Indicators
Figure 2
LED diagnostic and status indicators
UL
Green LED Communications power for the module electronics
ON:
OFF:
RC
Green LED Remote bus cable check
ON:
OFF:
BA
Green LED Remote bus active
ON:
OFF:
RD
Yellow LED Remote bus disabled
ON:
OFF:
FO1
Yellow LED Incoming fiber optic path monitoring (fiber optic)
ON:
OFF:
6550
Communications power present
Communications power not present
Incoming remote bus connection established
Incoming remote bus connection faulty
Data transmission on INTERBUS active
No data transmission
Outgoing remote bus disabled
Outgoing remote bus active
Incoming fiber optic path not sufficient
Incoming fiber optic path OK
Explanation of Symbols Used
7
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