Hardware reference guide
Quantum Field Bus Modules
240
35013379 02 October 2007
LED Diagnostics State of Indicator Lamps:
B Active F Meaning Corrective Action
Module switched off. Switch the device on.
Operating in Protected 
Mode (normal). Displaying 
Outputs.
æ
Operating in Protected 
Mode (normal). Displaying 
Inputs.
æ
Fault on AS-i bus (self-
programming possible).
Replace the faulty slave with a 
new identical slave.
Fault on AS-i bus (self-
programming not possible).
Connect the terminal.
AS-i power supply fault or 
no slave on the AS-i bus.
1. Check AS-i power supply.
2. Check the continuity of the 
AS-i bus cable.
Module self-tests in 
progress.
æ
Indicator 
lamp is on.
Indicator 
lamp is off.
Indicator lamp 
is flashing.
Indicator lamp is in 
indeterminate state.
(1) Faulty slave ID is flashing.
(2) No slave ID numbers are flashing.
X
(1)
X
(2)
X
X X X
X
X
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