Comtrol ES8508 Series User Guide - Manual (Page 14)

14 - LED Descriptions RocketLinx ES8508 Series User Guide: 2000575 Rev. A
Hardware Installation
LED Descriptions
This subsection provides information about the ES8508 LEDs. You can also refer to Device Front Panel on
Page 128 for information about using the web user interface to remotely view LED information.
LED Name LED On LED Blinking LED Off
SYS Green: System ready Green: Firmware loading Power off
PWR1/2 Green: System power ready Not applicable System not ready
R.S. (Ring
Status)
Green: Ring is normal
Amber: Abnormal Ring
Green: Ring with the wrong
port
Amber: The device's ring
port failed
Switch working in slave
mode
DO1
Relay is active and contacts
have been shorted
Not applicable DO not activated
DI1
High digital signal is
detected
Not applicable DI not activated
LNK/ACT Port is linked Port active
Port link down or port not
connected