Siemens Argus 7SR21 Technical Manual page 397

Chapter 4 - Data Communications Definitions
Ethernet – EN100-O
Ethernet – EN100-E
Ch 1 Ch 2
Ch 1 Ch 2
ED yellow LED yellow
L
LED green LED green
EN100 Module – RJ45 Interface EN100 Module – Duplex-LC Interface
Green LED (Physical Link)
Off – No link
On – Link present
Yellow LED (Activity)
Off – No traffic
On/flashing - Traffic
Fig. 2-8 EN100 Ethernet Module
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