9.6.2 LEDs
LED
Indication
Status
Notes
DS1
TxD to PC
Normally OFF. Lights up momentarily
during transmission or reception.
If one of these LEDs is permanently
OFF, there is no traffic on the
corresponding bus.
DS2
RxD from PC
If one of these LEDs is permanently
ON, there may be polarity inversion on
the bus
DS5
Isolated supply for communication
DS7
RUN
One flash per second.
DS8
TxD to flasher system
Normally OFF. Lights up momentarily
during transmission or reception.
If one of these LEDs is permanently
OFF, there is no traffic on the
corresponding bus.
DS9
RxD from flasher system
If one of these LEDs is permanently
ON, there may be polarity inversion on
the bus
9.7 Wiring diagrams
FCU-1
UM-4019_AM02-620e, Rev. 3.0, 2020/05/12
91
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Summary of Contents for FCU-1-in-1
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