Hello Guest it is July 16, 2019, 11:07:46 PM

Author Topic: Spindle output messes up tool change  (Read 3939 times)

0 Members and 1 Guest are viewing this topic.

Spindle output messes up tool change
« on: December 28, 2011, 06:07:12 PM »
Good evening all,

I have a very confusing problem. When an M3 command is active, and I try to initiate a tool change, the tool change fails and I get the message "limit switch activated." Tool changing works fine any other time. At first I assumed it was a noise issue with the VFD- not so. I disconnected power to the VFD and the problem persists. I have a turret up/down switch, and a turret home switch, Port 2 pins 9 and 11 respectively. I then assumed maybe one of these port/pin assignments was shared with an M3 function, i.e. motor step/direction and CW/CCW outputs. They are not.

Any ideas as to what might be going on?

Thanks!
Kevin

Offline Hood

*
  •  25,849 25,849
  • Carnoustie, Scotland
    • View Profile
Re: Spindle output messes up tool change
« Reply #1 on: December 29, 2011, 02:01:41 AM »
Are you running any brains or plugins that may be interfering?
If you attach your xml I can look and see if I can find a config issue.
Hood
Re: Spindle output messes up tool change
« Reply #2 on: December 29, 2011, 05:49:32 PM »
Don't know anything about brains, and I think the only plugin is the smoothstepper one. .xml attached.

Kevin

Offline Hood

*
  •  25,849 25,849
  • Carnoustie, Scotland
    • View Profile
Re: Spindle output messes up tool change
« Reply #3 on: December 30, 2011, 06:00:31 AM »
Xml seemed fine but didnt have a SS there when I tested so will have to remember to take one home tonight to test again.
Hood

Offline Graham Waterworth

*
  • *
  •  1,863 1,863
  • Yorkshire Dales, England
    • View Profile
Re: Spindle output messes up tool change
« Reply #4 on: December 30, 2011, 06:52:49 AM »
If you issue a M5 before the tool change will it work?

Graham
Never give up, time will pass, the cloud will clear, the sun will shine once more.

Offline Tweakie.CNC

*
  • *
  •  7,839 7,839
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Spindle output messes up tool change
« Reply #5 on: December 30, 2011, 07:18:03 AM »
As Graham says, it would seem logical that a tool change would be prohibited whilst the spindle is actually running.  ;)

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Hood

*
  •  25,849 25,849
  • Carnoustie, Scotland
    • View Profile
Re: Spindle output messes up tool change
« Reply #6 on: December 30, 2011, 07:41:02 AM »
As Graham says, it would seem logical that a tool change would be prohibited whilst the spindle is actually running.  ;)

Tweakie.

No, it is definitely not that, or as  far as Mach is concerned,  as I never stop the spindle to tool change.
Hood

Offline Graham Waterworth

*
  • *
  •  1,863 1,863
  • Yorkshire Dales, England
    • View Profile
Re: Spindle output messes up tool change
« Reply #7 on: December 30, 2011, 09:41:22 AM »
I was asking to see if there was some sort of interlock in the M3/4 that is cancelled in the M5

Graham
Never give up, time will pass, the cloud will clear, the sun will shine once more.

Offline Hood

*
  •  25,849 25,849
  • Carnoustie, Scotland
    • View Profile
Re: Spindle output messes up tool change
« Reply #8 on: December 30, 2011, 10:03:22 AM »
Not really sure what you are meaning Graham but I just tested on the lathe. I used the rear turret as it indexes one tool at a time so is slow. I had the spindle doing a M3 then called tool5 (it was on tool 1) and whilst the turret was indexing I called a M4 and then a M3 then M4 again and all was fine.
Hood
Re: Spindle output messes up tool change
« Reply #9 on: December 30, 2011, 12:32:02 PM »
Yes, this is on a lathe. Issuing the M5 before tool changing allows it to work. Might there be something in the M3 macro causing the trouble?

Kevin