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Power over Ethernet (PoE)
With PoE, the power for networked devices is carried via Ethernet.
• Mode A (Gigabit Ethernet)
Power is transferred on the data wires 1, 2, 3 and 6 of the Ethernet cable.
• Mode B (Fast Ethernet)
Power is transferred on the free wires 4, 5, 7 and 8 of the Ethernet cable.
Note
Before you pull a plug via which the device is supplied with power using PoE, disable the
relevant PoE power supply.
Note
No power sourcing equipment (PSE)
The device cannot be used as a PoE power supply for other devices.
SCALANCE W1788-x / W1748-1
Operating Instructions, 03/2022, C79000-G8976-C484-05
Connection
6.2 Power supply
65
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