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PoE ports of the PE408PoE
● The PoE ports of the PE408PoE comply with the standard IEEE 802.3at (type 2).
● Ports P1 to P4 are not isolated from each other. This means that they meet the conditions
named in Environment A: Power supply over Ethernet within a power supply system. The
same applies in the port group P5 to P8.
● Any port of the port group P1 to P4 is isolated from any port in port group P5 to P8 and
therefore meets the conditions named in Environment B.
The requirement for this is the supply via two separate power supply units.
● Ports P1 to P4 are supplied with power via the PoE power supply L1+/M1. Ports P5 to P8
are supplied with power via the PoE power supply L2+/M2.
● A maximum of 90 W are available per port group.
● If you use a Cat5/Cat5e cable with a maximum length of 100 m, the connected device
can be supplied with a power of 25.5 W.
Configuration
How you activate and configure PoE is described in the following configuration manuals:
● SCALANCE XM-400/XR-500 Web Based Management
● SCALANCE XM-400/XR-500 Command Line Interface
You will find the configuration manuals 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.
(https://support.industry.siemens.com/cs/ww/en/ps/15315)
Extender for SCALANCE XM-400
Operating Instructions, 09/2018, C79000-G8976-C332-08
Description of the device
4.6 Power over Ethernet (PoE)
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