MASSO Controller - Documentation

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Getting started – Installing MASSO


Our dedicated CNC controllers are designed from the ground up on a custom-built hardware platform that includes all the inputs and outputs to control machine axis, spindles etc. All the required hardware is built into the system and the user only needs to connect an LCD screen through VGA cable and a standard USB keyboard. With our unique dedicated architecture, the machine can be controlled without requiring any PC.


Connecting power to the MASSO

The MASSO power supply is located at the up-right corner of the controller as seen in the picture below. The MASSO will power on instantly if it is power in the cable. There is no switch button on the controller.


Connecting a screen

MASSO uses a standard 15 pin female VGA connector (1024 x 768 screen resolution) for Connecting the screen with Masso controller    

Connecting a keyboard


Caution: Please note that Apple keyboards and some Chinese keyboards are not compatible with MASSO Controller


Default Password

By default, the system password is set to HTG (in capital letters) for both Admin and User logins.
More info about caps lock and the password.

Upgrading / Unlocking the Controller

Frequent software updates are released for MASSO controllers and they can be installed as per the instructions on this link: Upgrading your MASSO.

Connecting the MASSO to your CNC machine

Since every CNC machine is different this procedure varies for each machine. It is our ambition to have instructions for the most common machines, you can find these under Setup and Calibration.
In general, if your machines input is similar to the Gecko Drives you can look at this diagram. In this case, you need to figure out which cables are connected to each pin, then strip these and connect them to the Masso as shown in the left part of the figure.


Wiring Stepper or Servo motor drives

MASSO is compatible with a wide range of motor drives. The connection for each varies. Please refer to the link for more details: Setting up Servo/Stepper Motor Connections


Before you can start using your machine you need to setup axis homing, please follow instructions from this link: Homing Setup

Setting the F1-screen

The “F1 – Setup” Screen displays current machine status and all vital information such as controller and external power supplies status. Click the link to check what our “F1- Setup” Screen looks like F1 – Setup Screen

Configuration of homing inputs

After wiring the sensor/switches, the system must be configured for proper operation. Refer Configuring the Homing Inputs

Calibrating the axis

Enter the parameters required in the dialogue box as described in the link: Calibrating the axis

Setting Mechanical Parameters

Once all the electrical connections have been done, the system can be calibrated as per the steps mentioned: Setting Mechanical Parameters

Axis Drive Settings

Servo and stepper motor drives have either switches or software tools to setup the drives Pulses Per Revolution (PPR) settings. To know more, click link: Axis Drive Settings

Maximum Feed Rate

All machines have their own limitation of maximum allowable speed depending on the hardware and safety limitations. The maximum feed rate value is used to check and make sure that the system does not exceed this value during operation.


Depending on the moving mass and motor torque the acceleration value can be set for the axis.

Minimum & Maximum Travel

These values define the size as well as minimum and maximum values of the axis. Refer the link Minimum & Maximum Travel for more details.

Automatic Tool Changers

Automatic tool changers are directly supported. Please contact us for more information and on how to add new tool changes to the controller.

4 Station Tool Changer

For selecting the 4 station turret, follow the instructions in the link: 4 Station Tool Turret

MDI command has to be entered in the dialogue box in MDI command. Check link: MDI Operations

Running G-Code Programs

  1. Programs can only be run from the “F2 – Program” screen, Press “F2” to go to the “F2 – Program” screen if already not in the “F2 – Program” screen.
  2. Press “CTRL + S” to start the program.
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