Power over ethernet (poe) – Rockwell Automation 1783-BMxxx Stratix 5700 Ethernet Managed Switches User Manual User Manual
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Rockwell Automation Publication 1783-UM004E-EN-P - June 2014
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Manage the Switch via the Studio 5000 Environment Chapter 5
Power over Ethernet (PoE)
PoE and PoE+ features are supported on switches with PoE ports when a correct
power supply is connected to the switch. For power supply requirements, see
You can do the following from the PoE window:
• Limit the total power supported.
• Configure mode and power settings for individual ports.
For most applications, the default configuration (Auto mode) is sufficient and no
further configuration is required. However, you can customize the settings to
meet your needs. For example, to give a PoE port higher power priority, set the
mode to Static and allocate the power to be used. As another example, to disallow
high-power devices on a port, set the mode to Auto and specify a maximum
power limit.
IMPORTANT
When you make PoE configuration changes to a port, the port drops power.
Whether the port powers up again depends on the new configuration, the
state of the other PoE ports, and the state of the power budget.
For example, if port 1 is in Auto mode and the On state, and you configure it for
Static mode, the switch removes power from port 1, detects the powered
device, and repowers the port.
If port 1 is in Auto mode and the On state and you configure it with a maximum
wattage of 10 W, the switch removes power from the port and then redetects
the powered device. The switch repowers the port only if the powered device is
a Class 1, Class 2, or a Cisco-only powered device.