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Power
• If the maximum power is exceeded, the supply is switched off port by port (according to
priority).
• In the case of an incorrect configuration, the supply is switched off port by port (according to
priority) if the permissible minimum voltage according to IEEE 802.3bt is fallen below.
2.5.3
Voltage transmission and pin assignment (ports P1 to P8)
The table below shows the most important power transfer and pin assignment for ports P1 to P8.
Pin number
Assignment
Pin 1
Positive power supply
Pin 2
Positive power supply
Pin 3
Negative power supply
Pin 4
Positive power supply
Pin 5
Positive power supply
Pin 6
Negative power supply
Pin 7
Negative power supply
Pin 8
Negative power supply
Description of the device
2.5 Power over Ethernet
SCALANCE XR-100WG
Operating Instructions, 09/2020, C79000-G8976-C455-04
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