---
title: Miller Auto Continuum
description: "This page describes how to integrate and set up communication between the Miller Auto Continuum power source and SmoothTool X. ## Hardware Configuration SmoothTool X is compatible with the Miller Auto Continuum. To set up communication between the software and…"
url: "https://hub.smooth-robotics.com/docs/power-sources-miller-auto-continuum/"
updated: "2026-09-23"
category: Power Sources
---

# Miller Auto Continuum

This page describes how to integrate and set up communication between the Miller Auto Continuum power source and SmoothTool X.

## Hardware Configuration

SmoothTool X is compatible with the Miller Auto Continuum. To set up communication between the software and a power source, the following items are required:

- An Auto Continuum system with an EtherNet/IP interface. SmoothTool X communicates with the machine over EtherNet/IP.
- Ethernet cable from the power source interface to the robot. Miller supplies it in three lengths: **300734** (3 m), **300735** (5 m) and **300736** (10 m).

### Power Source Interface Configuration

Before the robot can drive the machine, the Auto Continuum has to be handed over to robot control from its own front panel.

1. From the **Home** screen, tap **System**.

   ![Auto Continuum home screen with the System soft key highlighted](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-continuum-system-menu.webp)
2. Tap **Robot Options**. On this screen, **Communication Method** must read **Ethernet IP**. Tap **Control Level**.

   ![Robot Options screen showing Communication Method set to Ethernet IP and Control Level highlighted](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-continuum-robot-options.webp)
3. On the **Robot Control Level** screen, select **Robot Control** rather than **Power Source Control**.

   ![Robot Control Level screen with Robot Control selected](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-continuum-robot-control.webp)

If the machine is left on **Power Source Control**, it keeps its own panel settings and ignores what SmoothTool X sends.

### IP Address

The interface address is set on the same **Robot Options** screen, in the **Set Robot IP** field.

Verify that the address is reachable by the robot — both must be on the same subnet. For example, if the robot has IP address **192.168.100.2**, the power source should be in the same subnet, such as **192.168.100.4**.

### Hardware Installation

Connect the power source to the robot with the Ethernet cable.

## Software Configuration

Once the hardware is configured, add and connect the Miller Auto Continuum in SmoothTool X.

### Add the Auto Continuum

Tap **SmoothTool X Settings** from the Application view. In the sidebar, under **Components**, tap **Power Sources**, then tap **Add new power source**.

 ![Power Sources page with the Add new power source button](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-power-sources-tab.webp)

In the **Add power source** dialog, select the **Miller** tile and choose the **Miller Auto Continuum** model, then tap **Add power source**.

 ![Add power source dialog — Miller Auto Continuum selected](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-add-power-source.webp)

### Configure the Auto Continuum

Fill in the configuration fields:

| Field | Description |
| --- | --- |
| Custom name | A name to identify this power source. |
| Power source IP address | The IP address of the power source interface. The robot uses this address to communicate with it. Ensure it is set correctly; otherwise the robot cannot connect. |
| WFS/Amps command | Whether the robot commands **WFS** (wire feed speed) or **Amps** (current) — see [WFS/Amps command](#wfsamps-command) below. |
| Scale command | The arc length and arc control scale used on the machine — **-10 - 10** or **0 - 99** — see [Scale command](#scale-command) below. |
| Configure parameters in the software | Controls whether program nodes override the power source parameters at runtime — see [Configure parameters in the software](#configure-parameters-in-the-software) below. |

Caution

**WFS/Amps command** and **Scale command** must match the settings used on the power source itself. They change both the meaning and the unit of the values a program node sends, so a mismatch makes the machine weld with values other than the ones typed into the node.

When done, tap **Done** to save the power source.

 ![Miller Auto Continuum configuration page](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-configuration.webp)

#### WFS/Amps command

The Auto Continuum accepts either a wire feed speed or a current command — never both. This setting decides which one the robot sends, and which field the weld node shows:

- **WFS** (default) — the node shows **Wire feed speed** in m/min, and the robot commands wire feed speed.
- **Amps** — the node shows **Current** in A, and the robot commands current.

Only the selected field is shown on the node; the other one is hidden, because the machine would ignore it.

#### Scale command

Miller machines expose the arc length and arc control adjustments on either a signed or an absolute scale. This setting tells SmoothTool X which one the machine uses:

- **0 - 99** (default) — the node takes the values on the machine's own scales: **Arc length** 1 – 99 and **Arc control** 1 – 50. The values are sent unchanged.
- **-10 - 10** — the node takes the values on the signed scale: **Arc length** -10 – 10 and **Arc control** -4.8 – 5, where 0 is the middle of the machine's range. SmoothTool X converts them onto the machine's scales before sending them.

As with the WFS/Amps command, only the fields for the selected scale are shown on the node.

#### Configure parameters in the software

The **Configure parameters in the software** toggle controls how welding parameters are applied:

- **Disabled** (default) — the power source keeps the parameters set on the machine; program nodes do not override them.
- **Enabled** — program nodes override the power source parameters at runtime, letting you set welding parameters per node from the weld node's Power source tab.

### Connect to the Auto Continuum

Back on the **Power Sources** page, expand the new entry, tap **Selected** to make it the active power source, then tap **Connect**. When the connection is established, a connection status tag is shown on the entry.

 ![Configured Miller Auto Continuum power source entry](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-power-source-entry.webp)

## Programming with SmoothTool X and Miller Auto Continuum

When **Configure parameters in the software** is enabled, you can adjust the welding parameters per node from the program tree.

Select a weld node (e.g. Weld Seam) in the program tree and open its **Power source** tab. The parameters apply when the program reaches that node.

The tab opens on a method chooser offering two modes: **Job number mode** and **Synergic mode**. Pick the one that matches the process set up on the machine — each mode has its own set of fields, and only the fields of the selected mode are sent.

 ![Power Source Parameters node for Miller Auto Continuum — choosing the method](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-weld-parameters.webp)

### Job number mode

Use **Job number mode** for the machine's manual and MIG processes. Tap the mode to open its parameters.

 ![Miller Auto Continuum — Job number mode parameters](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-job-number-mode.webp)

| Identifier | Description |
| --- | --- |
| Job number | The memory slot to recall on the power source, 1 – 8. |
| Arc length | Arc length adjustment. Applies in all modes except Manual and MIG. Range depends on the configured **Scale command**: -10 – 10 or 1 – 99. |
| Voltage | Welding voltage in V, 10 – 44. Applies only in Manual and MIG modes; it is ignored in all other modes. |
| Wire feed speed | *(WFS command only)* Wire feed speed in m/min, 1.27 – 25.4. |
| Current | *(Amps command only)* Welding current in A, 20 – 600. |
| Inductance | Inductance adjustment, 0 – 99. |
| Slope | Slope adjustment, 1 – 99. |
| Transfer parameters | Sends the current parameters to the power source. Available once connected. |

### Synergic mode

Use **Synergic mode** for the machine's Pulse and RMD processes. Tap the mode to open its parameters.

 ![Miller Auto Continuum — Synergic mode parameters](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-synergic-mode.webp)

| Identifier | Description |
| --- | --- |
| Synergic line number | The memory slot to recall on the power source, 1 – 8. |
| Wire feed speed | *(WFS command only)* Wire feed speed in m/min, 1.27 – 25.4. |
| Current | *(Amps command only)* Welding current in A, 20 – 600. |
| Voltage trim | Voltage trim, 0 – 99. Applies only in Manual and MIG modes; it is ignored in all other modes. |
| Arc length | Arc length adjustment. Applies in all modes except Manual and MIG. Range depends on the configured **Scale command**: -10 – 10 or 1 – 99. |
| Arc control | Arc control adjustment. Range depends on the configured **Scale command**: -4.8 – 5 or 1 – 50. |
| Transfer parameters | Sends the current parameters to the power source. Available once connected. |

### Manual power source controls

The manual controls live in the **Power source** popover, opened from the button in the operator screen toolbar.

 ![Power source popover showing the manual wire-control and test functions](https://hub.smooth-robotics.com/wp-content/uploads/2026/09/manual-power-sources-miller-auto-continuum-manual-controls.webp)

When connected to the Auto Continuum, the following manual controls are available:

| Control | Description |
| --- | --- |
| Forward | Feeds the welding wire forward. |
| Backward | Retracts the welding wire. |
| Gas | Opens the gas valve for the duration of the press. |
| Error reset | Sends a reset-error signal to the power source. |

Warning

Connected to a power source that provides the option to control the wire. Do not use these functions without ensuring no harm can come to people or material. Make sure the area around the welding torch is clear before use.

#### Simulation

The **Simulation** toggle at the top of the popover runs the program as a dry run: the robot executes the full program and motion path, but the power source does not weld (no arc, wire feed, or gas). Use it to test a program safely, then turn it off to weld for real.