PoE-compliant devices can be divided into the following groups:
• Power source (PSE - Power Sourcing Equipment)
These inject power onto the Ethernet cable.
• Power consumer (PD - Powered Device)
These are supplied with power via the Ethernet cable.
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 as the power generator.
You will nd suitable PoE power supplies in the section "Accessories (Page 23)".
You will nd detailed information on the port extender PE408PoE in the operating instructions
"Extenders for SCALANCE XM-400".
You will nd the Operating Instructions here:
• On the data medium that ships with some products:
– Product CD / product DVD
– SIMATIC NET Manual Collection
• On the Internet pages of Siemens Industry Online Support (http://
support.automation.siemens.com/WW/view/en/79730528/133300)
Description of the device
4.9 Functions
SCALANCE XM-400
42 Operating Instructions, 03/2021, C79000-G8976-C306-10
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