Note
The Ethernet interfaces support Auto MDI(X). It is therefore possible to use both crossover and
1:1 cables to connect the devices.
For diagnostic purposes, each port has one green and one yellow LED. You will find a detailed
description in the Chapter "Meaning of LEDs"
Cable type: Industrial Ethernet
Max. cable length: 100 m
4.2.2 Meaning of the LEDs
Meaning of the LEDs on the CBE20 Communication Board Ethernet
Table 4-6 Meaning of the LEDs at ports 1 to 4 of the X1400 interface
LED Color Status Description
Link port – Off The electronics power supply is missing or outside the permissible tolerance range
(link missing or defective).
Green Continu‐
ous light
A different device is connected to port x and a physical connection exists.
Activity
port
– Off The electronics power supply is missing or outside the permissible tolerance range (no
activity).
Yellow Flashing
light
Data is being received or sent at port x.
Option Boards
4.2 Communication Board Ethernet CBE20
Supplementary component descriptions
Manual, 06/2019 51
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