Dm1" And "Dm2" Leds For The Display Mode; L1" And "L2" Leds For The Power Supply - Siemens SCALANCE XR524-8C Operating Instructions Manual

3.3.4

"DM1" and "DM2" LEDs for the display mode

The "DM1" and "DM2" LEDs indicate which display mode is set.
There are 5 display modes (A, B, C, D, and E). Display mode A is the default mode.
Depending on the set display mode, the "L1", "L2" LEDs and the port LEDs show different
information.
LED color
-
Green
Green
Green
Green
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
3.3.5

"L1" and "L2" LEDs for the power supply

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
""DM1" and "DM2" LEDs for the display mode (Page 29)".
Voltage limit
For devices with 24 VDC, the voltage limit is 17 VDC.
With devices with 100 to 240 VAC, the voltage limit is 90 VAC.
SCALANCE XR-500
Operating Instructions, 05/2017, A5E03275845-11
LED status
DM1 LED DM2 LED
Off
On Off
Off On
On
Flashing Off
LED status
DM1
On
Off
Flashing
Description of the device
Meaning
Display mode A
Display mode B
Display mode C
Display mode D
Display mode E
Display mode
DM2
Off Display mode A
Off Display mode B
On Display mode C
On Display mode D
Off Display mode E
3.3 LED display
29