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Quick Start Guide – MASSO G3 Plasma Configuration
These notes have been created to assist new users in setting up key configuration properties for MASSO Plasma. This guide is not intended to be a complete configuration manual but instead provides guidance on configuration order, highlights common pitfalls, and offers helpful information for first-time users.
Some configuration steps must be completed in the correct sequence or the system will not operate as expected. Although users are often keen to see motion as quickly as possible, progressing slowly and carefully usually results in a much faster and more reliable setup than rushing ahead.
This guide does not explain how to physically connect hardware to MASSO Plasma but provides references to relevant documentation where required.
Getting Started
To begin configuring MASSO, you must connect, at a minimum, a power supply, monitor, keyboard, and mouse. It is recommended that you also connect your E-Stop switch, motor drives, limit switches, auto touch-off, and VFD, although these can be connected progressively as each system is configured.
Download Your Software
Your software is downloaded from the myWorkshop portal. Login details are emailed to you when you purchase your MASSO, and step-by-step instructions for downloading the software are available here: https://docs.masso.com.au/my-workshop
Power
A 1 amp fuse must be installed in the power feed supplying MASSO G3. Accidental short-circuiting of the auxiliary power terminals will cause damage to the main board if this fuse is not installed.
Safe working Practices when wiring MASSO
Load Your Software
Follow the relevant instructions below to load software onto your controller.
Loading software into MASSO Touch Instruction
Additional resource video
Default Password
The default User and Admin password for MASSO is HTG. Instructions for changing these passwords can be found at the link below.
Emergency Stop (E-Stop)
An E-Stop switch is mandatory, and MASSO will not operate without one. Ensure the E-Stop is connected before continuing with setup.
Additional Resource video
Axis Wiring
Motor wiring depends on the type of motors being used. Examples for stepper and servo motor wiring are provided at the link below.
https://docs.masso.com.au/wiring-and-setup/setup-and-calibration/axis-servo-stepper-examples
Additional resource video
Axis Configuration
Distance per revolution: How far your axis travels in one revolution of the motor.
Pulses per revolution: How many steps it will take for your motor to complete 1 revolution
Maximum feedrate: Defines your axis rapid speed.
Acceleration setting: Determines how quickly your axis accelerates to your chosen feedrate.
Travel Minimum: This value determines the extent of travel for the axis in the negative direction
Travel Maximum: This value determines the extent of travel for the axis in the positive direction
Invert direction: If your axis travels in the wrong direction, put a check in this box to reverse it.
Backlash: Enter your axis backlash. Note that it must not exceed 10mm or 0.3937”
Jogging
Jogging can only be performed from the F3 Jogging screen. Jogging can be done using a mouse, touchscreen, keyboard, or pendant.
Pendant
No software configuration is required for the MASSO MPG pendant. Once connected, it will operate immediately.
To enable the E-Stop button on the pendant, the E-Stop must be wired in accordance with the E-Stop instructions. When the E-Stop is wired through the pendant, removing the pendant will trigger an E-Stop condition and the pendant must be reconnected to clear it.
Wiring only one e stop on MPG pendant
Homing Switches and setting up homing
Homing switches can be mechanical, optical, magnetic, or proximity sensors. Each axis must have a homing switch fitted, including any software-slaved axes used for auto-squaring.
Homing inputs must normally display a Low state on the F1 screen and change to High when triggered. If the logic is reversed, the input logic can be toggled using the spacebar.
Homing Sensor Quick Start Guide
Hard Limits
After homing, the homing switches also function as hard limit switches. For hard limits to work correctly, switches must be positioned outside the usable travel range of the axis. Soft limits should be used first, with hard limits acting as a final safety measure.
When a hard limit is triggered, the axis will decelerate to a stop rather than stopping instantly. Hard limits can be disabled under General Settings if required.
Soft Limits
Soft limits are used to prevent machine movement beyond the physical limits of the table. If configured incorrectly, soft limits can restrict travel or prevent the machine from moving entirely.
Additional resource video
Probing
Probing is a critical part of plasma operation and is used to establish torch height above the material. Torch touch-off wiring details are provided at the link below.
Torch Touch (floating head) Signal
Z height probing is performed using the G38.2 straight probe cycle within G-code.
Jump to Line
Torch Breakaway
The torch breakaway signal is used to immediately stop plasma output and axis movement if the torch is struck during cutting.
Torch On / Off Control
An input can be assigned as Plasma On/Off to control starting and stopping the plasma. Any MASSO G3 TTL output can be configured as Plasma On/Off and connected to the plasma system using the MASSO Relay Module.
Additional plasma connection examples are available for supported systems such as Hypertherm 45, 65, and 85.
MASSO DTHC
The MASSO DTHC provides digital arc voltage data to MASSO, allowing automatic torch height adjustment during cutting. All cutting voltages can be defined directly in the G-code file, eliminating the need for manual voltage adjustment on external THC units.
MASSO DTHC Installation
A THC is not required for plasma operation, but it is highly beneficial for maintaining consistent torch height. Maintaining correct torch height improves cut quality and compensates for material warping and uneven surfaces.
Installation instructions for the MASSO DTHC module are available at the link below.
