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3 port leds – Siemens ESM User Manual

Page 62

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Interfaces, Displays and Operator Controls

Industrial Ethernet OSM/ESM

58

C79000-Z8976-C068-10

4.2.3 Port

LEDs

The port LEDs indicate the operating states of the individual ports of the
OSM/ESM. On the OSM/ESM variants with digital inputs, the state of the inputs is
also indicated by the port LEDs. To allow this, the OSMs/ESMs have an additional
display mode. The display mode of the port LEDs can be changed using the
Select/Set button on the front panel of the OSM/ESM allowing all operating states
to be displayed. The current display mode is signaled by the display mode LEDs.

Display mode

Meaning

Port Status

Note
LED 3 exists only on devices with digital
inputs.

Port LED

- Not lit: No valid connection to the port

(for example station turned off or cable
not connected)

- Lit green: Valid connection
- Flashes green (once per period): Port

switched to standby

- Flashes green (twice per period): Port is

segmented

- Flashes green (three times per period):

Port is turned off

- Flashes green (four times per period):

Port is mirrored

- Flashes/lit yellow: Data reception on this

port

100 Mbps

Note
LED 3 exists only on devices with digital
inputs.

Port LED

- Lit green: Port operating at 100 Mbps
- Not lit: Port operating at 10 Mbps

Display

Display

LED off

LED off

LED off

LED off

LED on

LED off

3

2

1

3

2

1

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