Siemens X-400 User Manual
Page 110
Installation and Commissioning
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
110
C79000-G8976-C186-03
Display in Display Mode D
In display mode D, both the DM1 and DM2 LEDs of the Switch CPU are on. This
mode indicates whether the power supply is being monitored with the signaling
contact.
F
L 1
L 2
P o w e r M o d u l e L E D s
P o r t - L E D s
P 1
P 2
C P U - L E D s
R M
S T B Y
D M 1
D M 2
D I - L E D s
I N 1 / I N 5
I N 2 / I N 6
I N 3 / I N 7
I N 4 / I N 8
Figure 6-26
LED display of the power module and the Switch CPU in DMode D
The following table shows the meaning of the three light emitting diodes on the
power module in display mode D:
Label Color
Status
Meaning
F
off
No problem has been detected by the
SCALANCE X414-3E.
Red
on
The SCALANCE X414-3E has detected a
problem. The signaling contact opens.
L1
off
Power supply L1 is not monitored. If L1 falls
below 17 V, the signaling contact does not
respond.
Green
on
Power supply L1 is monitored. If L1 falls
below 17 V, the signaling contact responds.
L2
off
Power supply L2 is not monitored. If L2 falls
below 17 V, the signaling contact does not
respond.
Green
on
Power supply L2 is monitored. If L2 falls
below 17 V, the signaling contact responds.