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APPENDIX F — UPC OPEN CONTROLLER
Fig. L — BACview
6
Device Connection
Table AN — LED Status Indicators
Table AO — Run and Error LEDs Controller and Network Status Indication
LED STATUS
Power
Lights when power is being supplied to the controller. The UPC Open controller is protected by internal solid-state polyswitches on the
incoming power and network connections. These polyswitches are not replaceable and will reset themselves if the condition that
caused the fault returns to normal.
Rx Lights when the controller receives data from the network segment; there is an Rx LED for Ports 1 and 2.
Tx Lights when the controller transmits data to the network segment; there is an Tx LED for Ports 1 and 2.
Run Lights based on controller status. See Table AO.
Error Lights based on controller status. See Table AO.
RUN LED ERROR LED STATUS
2 flashes per second
Off Normal
2 flashes, alternating with Run LED Five minute auto-restart delay after system error
3 flashes, then off Controller has just been formatted
1 flash per second Controller is alone on the network
On Exec halted after frequent system errors or control programs halted
5 flashes per second
On Exec start-up aborted, Boot is running
Off Firmware transfer in progress, Boot is running
7 flashes per second 7 flashes per second, alternating with Run LED Ten second recovery period after brownout
14 flashes per second 14 flashes per second, alternating with Run LED Brownout
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