Alarm; Link; Bp1 And Bp2 - TC Communications TC1920 User Manual

Chapter 5 Troubleshooting
5.4.1.5

Alarm

The LED will illuminate solid red, and the dry contact
relay (if present) will close when an alarm condition is
detected. The user can configure which types of alarms
will trigger the unit alarm.
Normally in the OPEN position, any alarm condition will
trigger the switch to the CLOSED position. The switch
position is controlled by a relay inside the TC1920.
ALM LED Behaviors
LED
Solid
Off
Flash On
Steady Flash
5.4.1.6

Link

The LED indicates the link status summary between the
local and remote units.
LINK LED Behaviors
LED
Solid
Flash
Off
5.4.1.7

BP1 and BP2

These LEDs indicates the link status of the Ethernet
ports on the back of the unit.
BP1 and BP2 LED Behaviors
LED
Solid
Flash
Off
5-7
Condition
Unit Alarm is triggered.
Unit Alarm is not triggered.
Unit Alarm has been triggered since last cleared.
Unit is in testing/diagnostic mode.
Condition
Link established with remote unit.
Unable to establish link with remote unit.
Hotlink heartbeat is disabled.
Condition
Ethernet link is established.
Ethernet Tx/Rx activity detected.
Ethernet link not established.
Electrical
TC1920 Rev 1.3 User Manual