Using Modbus with Mach3 By Peter Homann Eventually a new user to Mach3 will hear the term “Modbus” being bandied about. This article explains how it can be used with Mach3. But, before diving in and showing how to use it in Mach3, a basic understanding of what Modbus is, and how it works is required. The Modbus Protocol. Dec 22, 2009 - Here is an easy way to hook up a mechanical joystick to Mach3 CNC. Switch since we will set up the Mach3 key grabber at the last step.

Hello, I am going to attempt to use a cheap USB gamepad as a hand pendant. I've read several threads where people have done similar things, but I'm looking for quick and easy. Has anybody used just a cheap USB gamepad and a key mapping software to map (for example) the left button on the gamepad to the left arrow on the keyboard, etc., etc.?

Then somehow mapped any of the buttons on the gamepad to the.001,.01 &.1 increments? I was hoping to get a little encouragement before I wasted a few hours and $25. Thanks, Greg Similar Threads: • • • • •. Alright, I got the logitech dual action controller, fired up key grabber, and everything is working PERFECTLY so far. But I do have two questions that would save me a bit of time hunting if anybody here could be so kind. Is there a button that could enable/disable the gamepad jogging?

I'd hate to bump one of the sticks and crash my tool. I tried toggling the 'jog on/off ctrl-alt-j' but that didn't do it. Is there a quick mapping to make the d-pad be incremental jogging all the time?

(meaning that the stick is always continuous jog and the d-pad is always incremental jog) I read that the x-box controller plug-in is set that way so I would assume it is possible. Thanks again for all the help. Alright, I got the logitech dual action controller, fired up key grabber, and everything is working PERFECTLY so far. But I do have two questions that would save me a bit of time hunting if anybody here could be so kind.

Is there a button that could enable/disable the gamepad jogging? I'd hate to bump one of the sticks and crash my tool. I tried toggling the 'jog on/off ctrl-alt-j' but that didn't do it. Is there a quick mapping to make the d-pad be incremental jogging all the time? (meaning that the stick is always continuous jog and the d-pad is always incremental jog) I read that the x-box controller plug-in is set that way so I would assume it is possible.

Thanks again for all the help. -gregWhat I do is assign a button the shift keypress which enables the rapid jogging when your pressing the jog buttons.

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Otherwise you jog at the normal jog speed. Also I don't have my jogging assigned to sticks just pushbuttons. It's too easy to bump a stick and also to jog in the wrong direction.

I have a cheapy gamepad that I use but the buttons tend to get stuck in the down position so I'm going to rip one of these apart and wire it up to normal pushbuttons. I want the axis jogging controls to be on-off-on rocker switches. Alright, I got the logitech dual action controller, fired up key grabber, and everything is working PERFECTLY so far. But I do have two questions that would save me a bit of time hunting if anybody here could be so kind. Is there a button that could enable/disable the gamepad jogging? I'd hate to bump one of the sticks and crash my tool.

I tried toggling the 'jog on/off ctrl-alt-j' but that didn't do it. Is there a quick mapping to make the d-pad be incremental jogging all the time? (meaning that the stick is always continuous jog and the d-pad is always incremental jog) I read that the x-box controller plug-in is set that way so I would assume it is possible. Thanks again for all the help. -greg1.I would have to check, but I thought that toggling the jog on/off would do it.

You can just set up a key to switch back and forth, but I don't know if there is a way to do what you want. Did you get it setup so mach3 starts with keygrabber running all the time so the gamepad works at mach3 startup? Spent a little more time on this project. First, I did just add an incremental/continuous button for single step jogging by the d-pad (which for whatever reason it still allowed continuous jogging by the sticks). I tried adding a button to the Mach3 screen to single step for each direction, but it wouldn't allow 'G91 G0.001 G90' to single step, and the screen editor doesn't allow for two lines of G-code (to put the G90 on a second line). So I'm still screwing around with that idea.