Interpreting LEDs
CNT-SVX05B-EN 87
Service LED (red)
The Service LED indicates whether the controller is operating normally.
Table 58 describes Service LED activity.
Status LED (green)
The green Status LED indicates whether the controller is receiving power
and if the controller is in manual test mode. Table 59 describes Status
LED activity.
Table 58. Service LED (red)
LED activity Explanation
LED is Off continuously
when power is applied to
the controller
The controller is operating normally.
LED is On continuously
when power is applied to
the controller
The controller is not working properly, or
someone is pressing the Service Pin button.
LED blinks once every
second
The controller is not executing the application
software because the network connections
and addressing have been removed.
1
1 Restore the controller to normal operation using the Rover service tool.
Table 59. Status LED (green)
LED activity Explanation
LED is On continuously Power is on (normal operation).
LED blinks once The controller is in manual output test
mode. No diagnostics are present.
LED blinks twice The controller is in manual output test
mode. One or more diagnostic is present.
LED blinks (¼ second On,
¼ second Off for 10 seconds)
The auto-wink option is activated, and the
controller is communicating.
1
LED blinks rapidly Flash download is being received.
LED is Off continuously Either the power is Off or the controller has
malfunctioned.
1
By sending a request from the Rover service tool, you can request the controller’s
green LED to blink (“wink”), a notification that the controller received the signal and
is communicating.