Module Leds - semaphore KINGFISHER PLUS+ Hardware Reference Manual

4.2.3 PC-1 Module LEDs
Both of the communications ports have Tx, Rx, RTS and CD LEDs in a vertical group as
shown above.
PC-1 LED
ON when module is functioning OK
OK
ON when the internal 5 V supply is OK. This LED should always be on
DC +5V
ON when the internal 12 V supply is OK. This LED should always be on (software
+12V
controlled)
Test LED 1. Flashes during Power Down mode.
T1
ON when the Auxiliary 24 V supply is OK (will only display if the 24 V converter is
+Vs
installed).
BATT
ON when the battery is being charged
CHG*
ON when the battery is being discharged
DIS*
ON when the battery voltage is low (For a PC-1 this occurs when the supply voltage is
LO
less than about 11.2 V
Test LED 2. Not currently used.
T2
ON when port is transmitting
Tx
ON when port is receiving
Rx
Request to send. Set ON to begin transmitting
RTS
Carrier detect: ON while a communications signal is detected.
CD
Processor Watchdog Timer. Set ON when the processor is reset.
W D
* The battery charging (BATT CHG) and battery discharging (DIS) LEDs will sometimes
flicker on and off when the battery is charged to the optimum level or if no battery is
connected.
Hardware Manual Version 7.16
PC-1
Description
)
DC
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Kingfisher Plus+ Hardware Manual
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