Centroid Community CNC Support Forum

cncsnw wrote: ↑Mon Nov 27, 2023 2:33 pm From a technical standpoint, going forwards through the program with an MPG handwheel driving the feeds should be readily achievable. After all, we already have the ability -- on lathes, at least -- to slave axis feed to a spindle encoder. It should be a short step to slave axis feed to the handwheel encoder instead. There would need to be some interface decisions made to provide for speed/step selection (though it would probably make the most sense to just use Parameters 40 and 41, and the x1 / x10 / x100 selection).

Backing up is a very different thing. That would require that CNC12 keep all past moves stored somewhere, so they can be retrieved and retraced. Normally, once a CNC move is done, it can be discarded. This has long been an integral part of Centroid's ability to run CNC programs of virtually unlimited length. However long the program, the CNC software only needs to hold the current line and a couple thousand upcoming lines in memory.

cnckeith wrote: ↑Wed Nov 29, 2023 3:21 pm

cncsnw wrote: ↑Mon Nov 27, 2023 2:33 pm From a technical standpoint, going forwards through the program with an MPG handwheel driving the feeds should be readily achievable. After all, we already have the ability -- on lathes, at least -- to slave axis feed to a spindle encoder. It should be a short step to slave axis feed to the handwheel encoder instead. There would need to be some interface decisions made to provide for speed/step selection (though it would probably make the most sense to just use Parameters 40 and 41, and the x1 / x10 / x100 selection).

Backing up is a very different thing. That would require that CNC12 keep all past moves stored somewhere, so they can be retrieved and retraced. Normally, once a CNC move is done, it can be discarded. This has long been an integral part of Centroid's ability to run CNC programs of virtually unlimited length. However long the program, the CNC software only needs to hold the current line and a couple thousand upcoming lines in memory.

check out the centroid back up along the g code program feature in Plasma CNC12, we will port to mill/router next.

xr4x4ti wrote: ↑Thu Nov 30, 2023 4:26 pm

cnckeith wrote: ↑Wed Nov 29, 2023 3:21 pm

cncsnw wrote: ↑Mon Nov 27, 2023 2:33 pm From a technical standpoint, going forwards through the program with an MPG handwheel driving the feeds should be readily achievable. After all, we already have the ability -- on lathes, at least -- to slave axis feed to a spindle encoder. It should be a short step to slave axis feed to the handwheel encoder instead. There would need to be some interface decisions made to provide for speed/step selection (though it would probably make the most sense to just use Parameters 40 and 41, and the x1 / x10 / x100 selection).

Backing up is a very different thing. That would require that CNC12 keep all past moves stored somewhere, so they can be retrieved and retraced. Normally, once a CNC move is done, it can be discarded. This has long been an integral part of Centroid's ability to run CNC programs of virtually unlimited length. However long the program, the CNC software only needs to hold the current line and a couple thousand upcoming lines in memory.

check out the centroid back up along the g code program feature in Plasma CNC12, we will port to mill/router next.

Keith,

I tried to look that feature up in the manual. Do you have a link or a place where it is described?

Thanks!