Siemens CSM 377, Руководство по эксплуатации

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3.5 Displays
Power indicator (green LED)
The status of the power supply is indicated by a green LED:
Status Meaning
LED lit green Power supply is connected
LED not lit Power supply is not connected or <14 V
Also see the <<Note>> in section <<4.6>>
Port status indicator (green/yellow LEDs)
The status of the ports is indicated by four green/yellow LEDs.
Status Meaning
Port 1 through 4 LED lit green TP link exists, no data reception
Port 1 through 4 LED lit yellow TP link exists, data received at TP port
Ports 1 through 4 LEDs flashing syn‐
chronously Test phase during power on
Product properties
3.5 Displays
Compact Switch Module CSM 377
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Operating Instructions, 06/2022, A2B00073499-02