Siemens SCALANCE XM-400 Configuration Manual page 236

Configuring with Web Based Management
5.4 The "System" menu
Description of the displayed boxes
● PSE (read-only)
Shows the number of the PSE.
● Maximum Power [W] (read-only)
Maximum power that a PSE provides to supply PoE devices.
The "Maximum Power" value can be set for a SCALANCE XM-400.
● Allocated Power [W] (read-only)
Sum of the power reserved by the PoE devices according to the "Classification".
● Power in Use [W] (read-only)
Sum of the power used by the end devices.
● Usage Threshold [%]
As soon as the power being used by the end devices exceeds the percentage shown here,
an event is triggered.
Power over Ethernet with SCALANCE XM-400
With a SCALANCE XM-400, you can use the "Power over Ethernet" function via the port
extender PE408PoE.
PoE power supply
The connection of the PoE power supply is external. You can connect 2 PoE power supplies
with each PE408PoE port extender. Each PE408PoE therefore has 2 PSE units (Power
Sourcing Equipment) each with 4 ports.
Numbering of the PSE units
To be able to differentiate between the PSE units in the configuration, they are numbered:
236
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12