Setting Up Homing on CNC
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Machine homing uses sensors to establish a reference point for each axis of a CNC machine. Sensors are mounted on the axes and wired to the controller. The controller is configured to home each axis to its sensor in a specified sequence. Requesting homing on startup ensures the machine is always homed before use for tasks like tool changes and running G-code files. Proper homing setup allows the full capabilities of the CNC machine.
Setting Up Homing on CNC
- 1. Setting up Homing on CNC with MASSO By: Hind Technology
- 2. WHAT IS MACHINE HOMING? Machine homing is one of the most important parts for a CNC machine simply because without knowing the reference or the position of each axis, you can't use your machine. Think such as job fixtures, jigs, and automatic tool changes simply can't work without homing.
- 3. HOW DOES MACHINE HOMING WORKS? Homing works by moving the axis to a pre-defined position where we have a sensor/switch, and using that location as the reference point, the controller can accurately know the position of the axis.
- 4. HOW DOES MACHINE HOMING WORKS? The next step is to mount homing sensors on the machine.
- 5. HOW DOES MACHINE HOMING WORKS? Wire the sensors to the first 3 inputs on the MASSO. Input 1 will be the y-axis sensor input, Input 2 will be the x-axis sensor, and Input 3 will be the z-axis sensor.
- 6. HOW DOES MACHINE HOMING WORKS? Go to the F1 screen and assign these as homing sensor inputs. Go to the inputs list, go to input 1, set it as y-axis homing input, input 2 as x- axis homing input and input 3 as z-axis homing input.
- 7. HOW DOES MACHINE HOMING WORKS? Please also note that all homing input must show low when not triggered. If you get a normally high signal from your sensor/switch, you can invert that signal by pressing the space key.
- 8. HOW DOES MACHINE HOMING WORKS? At this stage, we can also check if the wiring to the sensors is okay by looking at the sensors status changing from low to high as we trigger the sensors.
- 9. HOW DOES MACHINE HOMING WORKS? Final step is to set up the homing sequence. You can set up your own homing sequence as required but for this example we will be first homing the z- axis away from the workpiece, and then homing the x and the y axis together.
- 10. HOW DOES MACHINE HOMING WORKS? For sequence 1, let’s select the z-axis so it’s homed first. For sequence 2 we will select the x and the y axis so both are homed together. Press ESC to save and exit.
- 11. HOW TO MAKE SURE MACHINE IS ALWAYS HOMED BEFORE USE? It’s a good idea to set up request home on start up and E-stop. By doing this MASSO will first request the user to home the machine after power up and only then be able to use or run any G-code.
- 12. HOW TO MAKE SURE MACHINE IS ALWAYS HOMED BEFORE USE? Power up the unit after saving these settings and as we can see we have two alarms in the screen, one is for the E-stop. Press and release that E-Stop button to clear the E-Stop alarm. Now the controller is requesting to home the machine. Home the machine by pressing ctrl + alt + home. Now the controller is ready to run your G-code files.
- 13. HOW TO MAKE SURE MACHINE IS ALWAYS HOMED BEFORE USE? Power up the unit after saving these settings and as we can see we have two alarms in the screen, one is for the E-stop. Press and release that E-Stop button to clear the E-Stop alarm. Now the controller is requesting to home the machine. Home the machine by pressing ctrl + alt + home. Now the controller is ready to run your G-code files.
- 14. Only with the proper homing setup, the machine can be used to its full potential.
- 15. You can find the complete documentation on our website hindtechnology.com.