Hardware reference guide

Networking
35013379 02 October 2007 277
LED Indicators
and Description
The following figure shows the LED indicators for the Drop module.
The following table shows the RIO Drop module LED descriptions.
LED Descriptions
LEDS Color Indication when On
Ready Green The module has passed power-up diagnostics.
Com Act Green The module is communicating on the RIO network.
Fault Red Unable to communicate with one or more I/O modules.
Error A Red Communication error on Channel A.
Error B Red Communication error on Channel B (dual cable only).
Ready
Error B
Com Act
Error A
Fault
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