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10.3 LED Status
On-board status LEDs are available for troubleshooting purposes on many of the Advanced modules.
10.3.1 AX-CTL Base Card
LED Function
Description
1
Heartbeat LED – PSU
Normal: Flashes at 1Hz
2
Heartbeat LED – Main Microprocessor
Normal: Flashes at 1Hz
3 Serial
Expansion
Card
ON = Serial Expansion Card Connected
4 USB
ON = USB Connected
5
PBUS Communications – Transmit
Flashes when data transmitted to PBUS modules
6
PBUS Communications – Receive
Flashes when data received from PBUS modules
7
Heartbeat LED – SLC #1
Flashes when communicating on the SLC
8
Heartbeat LED – SLC #2
Flashes when communicating on the SLC
9
Serial Communications – Transmit
23
Flashes when data transmitted
10
Serial Communications – Receive
23
Flashes when data received
23
Applies to USB, RS232 and Serial Expansion Circuits.