Contents:
If you’ve purchased a Wattsan rotary device and need to install it on your CNC router, this guide will walk you through the process.
Which CNC machines are compatible with the rotary device?
Not all CNC machines are compatible with rotary devices. Wattsan offers four main series of machines: Mini, A1, M1, and M3. The primary difference between these models lies in the height of the Z-axis, which determines whether a rotary device can be installed and function properly.
- Mini series: There is a dedicated rotary device for this model, consisting of two components: a chuck and a wedge holder.
- A1 series: This series features a 200 mm Z-axis, which is insufficient for proper rotary operation.
- M1 series: Designed with a 300 mm Z-axis, this model is ideal for rotary devices.
- M3 series: Features automatic tool changing, making it an advanced option for rotary machining.
If your machine is from the A1 series, you can order a customized version with a taller Z-axis, or you can opt for the M1 or M3 series, which already support rotary devices.

How to connect the rotary device
The connection process varies depending on the model, but we will use the M1 series as an example, as it is the most suitable option.
Incorrect connection method (avoid this approach)
One common mistake is replacing one of the existing axes with the rotary device. This method limits the machine’s capabilities and is not recommended.
Correct connection method (recommended approach)
Instead of replacing an axis, the rotary device should be added as a fourth axis. Here’s how to do it properly:
Replace the controller
- Swap the A11 controller with an A18 controller, which supports a fourth axis.
Install an additional stepper motor driver
- Add an extra stepper motor driver inside the control cabinet. This ensures that the original three axes remain functional while the rotary device operates separately.
- Note: The Y-axis requires two motors, so the cabinet already contains four drivers. You need to add a fifth driver for the rotary device.
Connect the electronics
- Wire the fifth driver to the power supply.
- Connect the driver to the controller and the C-axis (the fourth axis).
- Place the rotary device on the worktable and connect it to the fifth driver.
Set up the A18 controller
- Press the “Origin” button and wait for the machine to complete initialization.
- Set a new zero point for the rotary axis:
- Press “C-” and “ON/OFF” together to open the settings menu.
- Select “Clear A”, and the display will reset to zero.
- Configure the pulse settings:
- Navigate to “Menu” → “Machine Setup” → “Pulse Equal”.
- Select “Rotary XA” and set the value to 88,900.
- Restart the machine when prompted.
Test the setup
- Hold either the C- or C+ button and check if the numbers reset to zero after 360° rotation.
- If the setup is correct, the numbers should reset automatically.
Now your rotary device is ready to use. If you don’t need it for a certain project, you can simply store it under the table without disconnecting any wires.

Alternative: pre-configured rotary CNC machine (M1 1325 RD)
If you prefer to skip the setup process, Wattsan offers the M1 1325 RD, a CNC router with a pre-installed rotary device. This model is specifically designed for processing balusters, cylindrical objects, and staircase components, making it ideal for furniture production. It supports workpieces up to 2,100 mm in length.

Conclusion
There are three ways to set up a rotary device for your CNC router:
- Replace one of the existing axes with the rotary device (not recommended).
- Install the rotary as a fourth axis, ensuring seamless switching between rotary and standard operations.
- Purchase a pre-configured CNC machine with an integrated rotary device for a hassle-free experience.
Choose the option that best suits your workflow and machine capabilities.