Siemens OSM, ESM technical specifications Full duplex Port LED

Interfaces, Displays and Operator Controls

Full duplex			Port LED
			- Lit green: Port operating in full duplex
Display			mode
3	2	1	- Not lit: Port operating in half duplex mode
LED off	LED on	LED off
Note
LED 3 exists only on devices with digital
inputs.
Fault mask			The fault mask indicates whether the ports
			and the power supplies are monitored with
Display			the signaling contact.
			Port LED
3	2	1	- Lit green: Port is monitored; in other
			words, if the port does not have a valid
			connection (for example cable not
LED off	LED on	LED on	plugged in or attached device turned off),
			the signaling contact is triggered.
			- Not lit: The port is not monitored; in other
Note			words, an invalid or valid connection at
LED 3 exists only on devices with digital			the port does not trigger the signaling
inputs.			contact.
			The fault mask can be set again with the
			button on the front panel of the OSM (see
			4.2.4.2)
Digital inputs			Port LED
			- Lit green: The logical state "1" is applied
Display			to the corresponding digital input. This
			requires an input voltage of + 13 V DC to
			+ 30 V DC.
3	2	1	- Not lit: The logical state "0" is applied to
			the corresponding digital input. This
LED on	LED off	LED off	requires an input voltage of + –30 V DC
			to + 3 V DC.
Note
LED 3 exists only on devices with digital
inputs.

The basic status "Port Status" of the display is adopted automatically after turning on the device. The device also switches automatically to this display status when the "Select/Set" button is pressed for more than a minute.

Industrial Ethernet OSM/ESM	59
C79000-Z8976-C068-10