Contemporary Research TD960801-0MC - Manual (Page 30)

TD960801-0MC
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RED—The EXTEND-A-BUS has detected an internal problem
with the CAN port requiring service.
Flashing RED—The CAN port does not have sufficient voltage
on its V+ and V– lines to power the optically isolated port.
GREEN—The CAN port is receiving data.
Flashing GREEN—The CAN port is commissioned, however,
no CAN data has been received in over a second.
3.4.2 LINK Status LED
A dual color LED (yel/green) is used to identify status of the
ARCNET (backbone) port. After a power-on sequence, the
LED indications are as follows:
YELLOW—Continuous network configuration occurring or no
other EXTEND-A-BUS nodes found.
Flashing YELLOW—One or more network reconfigurations
detected on an operating network.
GREEN—Data is being received from the network.
Flashing GREEN—Network is operational, however, no data is
being received from the network in the last second.
3.4.3 Power-on LED Sequence
The CAN Status and LINK Status LEDs are sequenced upon
power-up to verify the integrity of the LEDs. The sequence is
as follows:
CAN status off and Link status off
CAN status GREEN for 0.25 seconds
CAN status RED for 0.25 seconds
LINK status GREEN for 0.25 seconds
LINK status YELLOW for 0.25 seconds
After the power-on sequence, both LEDs assume their normal
operation.