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2
3, 5
4, 6
Serial Communication Module Indicators
The following diagram displays the location of the LED indicators on
the serial communication module:
The table below explains the meaning of each LED state:
Table 8-2: Serial Communication Module Indicator Definition
LED
Role
Ethernet Port
Speed ( Upper
LED)
Ethernet Port
Link/ Active (
Lower LED)
Chapter 8 - Diagnostics and Troubleshooting
LED
Description
State/Color
Green
Other situation except
booting
OFF
EPM is booting
Yellow On/Off OFF for 10Base-T; ON for
100Base-TX.
Green
OFF for no connection; ON
On/Off/
for connection; Blinking for
Blinking
toggle
171
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