Troubleshooting; Communication Led's - Carrier UC Open XP Installation And Startup Manual

Troubleshooting

Troubleshooting
If you have problems mounting, wiring, or addressing the UC Open XP or the UC Open XP IO, contact Carrier
Technical Support.

Communication LED's

The LED's indicate if the controller is speaking to the devices on the network. The LED's should reflect
communication traffic based on the baud rate set. The higher the baud rate the more solid the LED's
become.
LEDs
Power
Rx
Tx
Run
Error
The Run and Error LED's indicate controller and network status.
If Run LED shows...
2 flashes per second
2 flashes per second
2 flashes per second
Alternating flashes with the
Error LED
2 flashes per second
2 flashes per second
26
Status
Lights when power is being supplied to the expander.
NOTE The UC Open XP is protected by internal solid state Polyswitches on the
incoming power and network connections. These Polyswitches are not replaceable,
but they will reset themselves if the condition that caused the fault returns to
normal.
Lights when the controller receives data from the network segment; there is an Rx
LED for Ports 1 and 2.
Lights when the controller transits data from the network segment; there is an Rx
LED for Ports 1 and 2.
Lights based on controller health.
Lights based on controller health.
And Error LED shows...
Off
2 flashes,
alternating with Run LED
3 flashes,
then off
Alternating flashes with the Run
LED
On
1 flash per second
Status is...
Normal
Five minute auto-restart delay
after system error
The controller has just been
formatted
The controller files have been
archived
Two or more devices on this
network have the same MS/TP
network address
The controller is alone on the
network
UC Open XP/UC Open XP IO