Machsupport Forum

MachPro => MachPro General Discussion => Topic started by: phil@highside.co.nz on October 17, 2026, 11:22:12 PM

Title: Machpro delay when changing direction during machining
Post by: phil@highside.co.nz on October 17, 2026, 11:22:12 PM

Hi
I've noticed that during interpolating a bore, as an example, at each 90 degree point there is a momentary delay in the processing that is causing a minimal undercut within the bore.
This is with ESS as the motion controller and a well speced PC running Machpro.

Anyone have any ideas as to cause?

Thanks
Phil

Title: Re: Machpro delay when changing direction during machining
Post by: Steve Stallings on October 18, 2026, 09:55:19 AM

Could this be due to running in Exact Stop mode (G61) versus Constant Velocity mode (G64)?

Title: Re: Machpro delay when changing direction during machining
Post by: phil@highside.co.nz on October 18, 2026, 01:46:24 PM

Yep, I noticed that the active modals showed G61 just after I posted the question.
My POST was not adding a G64 so I've modified it to do so.
I think that will fix it.
Cheers
Phil

Title: Re: Machpro delay when changing direction during machining
Post by: phil@highside.co.nz on October 18, 2026, 07:38:22 PM

Made the change and ran a test file.
All is good now.
I didn't expect that MachPro would not by default set G64
Cheers
Phil

Title: Re: Machpro delay when changing direction during machining
Post by: Steve Stallings on October 18, 2026, 07:47:17 PM

I do not have a MachPro system to check, but I suspect that there is a place in your config where you can set the defaults for mode setting G codes.