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How to Set the IP Address on the Miller Auto Deltaweld 350

Set the network IP address on your Miller Auto Deltaweld 350 welder with a laptop and the Ethernet port on the front, so your cobot can talk to it over Modbus. Includes how to give your laptop a static IP address on Windows or Mac.

Written by Samuel Colvin

If your Cobot Welder can't connect to a Miller Auto Deltaweld 350 power source, the welder's IP address may not match the one the robot is set to use. This guide shows you how to set it.

You do this from a laptop, plugged into the front of the welder. Every step is on the laptop or the welder — nothing happens on the teach pendant.

Before You Start

  • Have a laptop with a web browser — you open the welder's setup pages on it.

  • Have an Ethernet cable to run from the laptop to the front of the welder.

  • Have a USB-to-Ethernet adapter if your laptop has no Ethernet port.

Connect Your Laptop to the Welder

  1. Plug an Ethernet cable into the Ethernet port on the front of the welder.

    The Ethernet port on the front of the Deltaweld with an Ethernet cable plugged in

  2. Plug the other end of the cable into your laptop.
    ​

    A laptop with the other end of the cable plugged in

    No adapter? You can borrow the white USB-to-Ethernet adapter from inside the robot cabinet. Put it back when you finish — the robot uses it to talk to the welder.
    ​

    The white USB-to-Ethernet adapter inside the robot cabinet

  3. Turn off Wi-Fi on your laptop.

    The connection to the welder may not work with Wi-Fi on.

Give Your Laptop a Fixed IP Address

Your laptop normally gets its IP address automatically. This welder needs your laptop on a specific IP address, so you set one by hand. You undo this change at the end.

Change the settings for the port you plugged the cable into — not Wi-Fi. If your laptop lists more than one Ethernet connection, unplug the cable and watch which one changes.

Follow the steps for your laptop below.

On Windows

  1. Select the Start button, then select Settings.

  2. Select Network & internet, then select Ethernet.

  3. Under IP assignment, select Edit.

  4. Set IP assignment to Manual.

  5. Turn on IPv4.

  6. Enter:

    1. IP address: 169.253.1.33

    2. Subnet mask: 255.255.255.0

    3. Gateway: leave blank

    4. Preferred DNS: leave blank

  7. Select Save. Your laptop is now on the same network as the welder.

On a Mac

  1. Open the Apple menu, then select System Settings.

  2. Select Network, then select the Ethernet connection for the port you plugged the cable into. It may be named for the adapter you plugged in, like USB 10/100/1000 LAN or AX88179A.

  3. Select Details.​

  4. Select TCP/IP.

  5. Set Configure IPv4 to Manually.

  6. Enter:

    1. IP address: 169.253.1.33

    2. Subnet mask: 255.255.255.0

    3. Router: leave blank

  7. Select OK. Your laptop is now on the same network as the welder.

Open the Welder's Setup Pages

  1. Turn on the welder. Wait until the display stops showing Boot.

  2. Open a web browser on the laptop.

  3. Type 169.253.1.32 in the address bar, then press Enter.

  4. Enter the password cobots, then select Login.

Turn Off the EIP Setting

Your Deltaweld talks to the robot over Modbus. It does not use EIP.

  1. Under Auto Deltaweld Configuration, select Edit.
    ​

    The Deltaweld setup home page showing the Machine Configuration and Auto Deltaweld Configuration cards, each above an Edit button

  2. Under Robot Interface Configuration, select Edit.
    ​

    The Auto Deltaweld Configuration page showing the Robot Interface Configuration, Memory Slot Configuration, and Contactor cards, each above an Edit button

  3. Under Interface Configuration, set Modbus to Enable and set EIP to Disable.

    The Interface Configuration section showing Modbus set to Enable and EIP set to Disable

    ​

  4. Select Save.

Set the Welder's IP Address

  1. Scroll to the bottom of the same page to find the Network Configuration (Back panel) section.
    ​

  2. In the four IP Address boxes, enter 192, 168, 181, and 151 — one number per box.
    ​

  3. In the four Subnet Mask boxes, enter 255, 255, 255, and 0 — one number per box.
    ​

    The Network Configuration (Back panel) section showing the MAC address, the IP address boxes, the subnet mask boxes, and the Save button

  4. Select Save.

Restart the Welder

The welder needs a restart before the new IP address takes effect.

  1. Turn the welder off. Wait until all the lights on the front go out.

  2. Turn the welder back on. Wait until the display stops showing Boot.

How to Verify

The green lights on the front of the welder come on, and the display shows numbers instead of Boot.

To confirm the robot and the welder are talking, check the Modbus connection on the teach pendant — the dot next to the Modbus signal turns green. The steps are in Troubleshooting Fieldbus Communication Loss with Miller Auto Deltaweld 350.

Undo the Changes on Your Laptop

The fixed IP address is only for talking to the welder. These steps put your laptop back on your normal network.

  1. Unplug the Ethernet cable from the welder and from your laptop.

  2. If you borrowed the adapter from the robot cabinet, plug it back in.

    The light on the adapter should be on or flashing. If it is not, unplug the adapter from the USB port and plug it back in.

  3. Set the IP address back to automatic:

    • On Windows, set IP assignment to Automatic (DHCP).

    • On a Mac, set Configure IPv4 to Using DHCP.

  4. Turn Wi-Fi back on.

Troubleshooting

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