Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: BONE on June 04, 2006, 03:37:16 PM

Title: Slow response to cycle stop
Post by: BONE on June 04, 2006, 03:37:16 PM
I'm using Mach3 and have a question.  Is it typical for the machine to halt a secound or two after the space bar is pressed or the cycle stop button clicked on with the mouse.  Both seem to act exactly the same.  This happens every time.  In other words if I really wanted to stop last secound it might be to late as it keeps feeding some after the switch is activated.  Any idea?

Thanks
BONE
Title: Re: Slow response to cycle stop
Post by: Brian Barker on June 04, 2006, 04:26:36 PM
This is a limitation of the software :( It can be fixed but only with hardware like the Grex.. The problem comes from the CV buffer and the moves that are stored in the ring zero buffer. The buffer must be drained to stop the machine.

There is a place where you can set the buffer to be a little shorter but you will giveup some of the CV..
Hope that helps
Brian
Title: Re: Slow response to cycle stop
Post by: BONE on June 04, 2006, 09:08:28 PM
That add's an equation to things don't it.  Make sure all the offsets are correct. ;)  It's just that there has been times that I couldn't hardly get to the button in times as it is and I've been working in job shops for ever.  No answer to this problem with windows and is this a common problem on other controls running through windows?  This is why I was hoping the single step worked a little better.  It could at least be a prodictable way of telling where it's going to stop. :)

Thanks much for the help,
BONE
Title: Re: Slow response to cycle stop
Post by: Brian Barker on June 04, 2006, 09:31:43 PM
shuttle mode is what I use :) in Mach 3 you can have an MPG set up so the more you crank the MPG the more it will run the program also the faster you turn the MPG the faster the program runs (Up to the feedrate that is programed)

hope that is a little better for you
Brian
Title: Re: Slow response to cycle stop
Post by: Hood on June 05, 2006, 03:32:26 AM
In other words if I really wanted to stop last secound it might be to late as it keeps feeding some after the switch is activated.  Any idea?
For emergencies you should really have a physical E-Stop button connected via the charge pump if your breakout supports it, as soon as that is hit all should stop instantly. You will of course have lost reference but at least your machine will be safe and you can then reference and start again from where you left off.
Hood