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WARNING! From February 2022, these pages are no longer maintained.
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This step is for Duets with Ethernet only! Plug an ethernet cable into the Duet's ethernet port and connect the other end of the cable to a free ethernet port on your router/network hub.

The Duet 2 Ethernet and Duet 2 Maestro come with a factory-configured fixed IP address for testing. This is unlikely to work for your setup!

So you need to change the network settings. There are two options:

DHCP: Most home routers are setup to assign IP addresses by DHCP. Send M552 S0 to disable networking, then M552 S1 P0.0.0.0 to enable networking and have your router assign an IP address.

Fixed Address: You can set the Duet to use a fixed IP address. Note that if you use a fixed address, care should be taken that it does not conflict with other devices on the network. Send M552 S0 to disable networking, then M552 S1 Px.x.x.x to enable networking, where "x.x.x.x" is the IP address you want to use, eg

In both cases, after 10-30 seconds the board should reply with Network running and the IP address the Duet is using. Send M552 to check the settings.

Note: these network settings are temporary! They will be lost when you restart and will have to be re-entered. Step 10 and 11 explain how to set it up permanently.

Mac users using 'screen': Press CTRL-A then CTRL-\ to exit screen and return to terminal. Linux users using 'screen': CTRL-A then \ to exit screen and return to terminal. You can safely close Terminal at this point.

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