Leds "L1" And "L2 - Siemens SIMATIC NET SCALANCE XM-400 Operating Instructions Manual

Setting the display mode
To set the required display mode, press the "SELECT/SET" button.
If you do not press the "SELECT/SET" button for longer than 1 minute, the device
automatically changes to display mode A.
Pressing SELECT/SET button
starting at display mode A
-
Press once
Press twice
Press three times
Press four times
4.7.6

LEDs "L1" and "L2"

The "L1" and "L2" LEDs indicate the current range of the power supply at connectors L1 and
L2.
The meaning of the "L1" and "L2" LEDs depends on the set display mode, see section
"LEDs "DM1" and "DM2" (Page 34)".
Meaning in display modes A, B, C and E
In display modes A, B, C and E, from the "L1" and "L2" LEDs you can see whether the
power supply is higher or lower than 17 V.
LED color
-
Green
Meaning in display mode D
In display mode D, the "L1" and "L2" LEDs indicate whether the power supply is monitored.
LED color
-
Green
SCALANCE XM-400
Operating Instructions, 09/2018, C79000-G8976-C306-08
L1/L2 LED L1/L2 connector
LED status
Off Power supply lower than 17 V
On Power supply higher than 17 V
L1/L2 LED L1/L2 connector
LED status
Off Power supply is not monitored.
If the power supply falls below 17 V, the signaling contact does
not respond.
On Power supply is monitored.
If the power supply falls below 17 V, the signaling contact re-
sponds.
LED status
DM1 DM2
Off
On Off
Off On
On
Flashing Off
Description of the device
4.7 LED display
Display mode
Display mode A
Display mode B
Display mode C
Display mode D
Display mode E
35