2: Introduction
EMG™ Edge Management Gateway User Guide 35
Front Panel LEDs
The front panel LEDs provide quick visual troubleshooting.
Both LEDs - Boot Sequence
During the boot sequence, the EMG will display the following LEDs:
Bootloader Starts - Both LEDs change to green.
Kernel Initiation Complete, Applications Start - the top LED remains green, the bottom
LED changes to orange.
Zero Touch Provisioning - if ZTP is initiated on one of the Ethernet ports, the top LED will
remain green, and the bottom LED will change to red. If a configuration is successfully
acquired via ZTP and installed on the console manager, the bottom LED will flash off, red, off,
red, off, red. After this the bottom LED will return to orange.
Boot Complete - both LEDs change to provide Ethernet Port and Connectivity module status
(see Table 2-13 below).
Ethernet Port and Connectivity Status
Table 2-13 describes the front panel LED indicators.
Table 2-13 Front Panel LED Indicators
Digital IO Port
The DIO port applies to EMG 8500 only.
The terminal block digital input relay output is located on the front panel of the EMG unit. It
provides two digital inputs and one relay output (terminal block) for use with sensors. The DIO port
requires an adapter, which is available and sold separately. Figure 2-14 shows the DIO adapter
installed on the EMG 8500 with the DIO port pin order and pin definition.
Indicator LED 1 (Ethernet port) LED 2 (Connectivity)
Solid Green At least one of the Ethernet ports has a
link, or both Ethernet ports are
disabled.
Indicates one of the following
conditions:
There are no connectivity modules
installed
An LTE modem module is installed
and is disabled
An LTE modem module is installed
and has a link
Solid Orange Not applicable An LTE modem module is installed but
no SIM card is present
Blinking Red None of the Ethernet ports has a link. An LTE modem module is installed but
does not have a link.
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