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Machsupport Forum
Mach Discussion
General Mach Discussion
Spindle output messes up tool change
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Topic: Spindle output messes up tool change (Read 357 times)
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GytarrMann19
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Posts: 65
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
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Hood
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Posts: 17,368
Carnoustie, Scotland
Re: Spindle output messes up tool change
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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
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GytarrMann19
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Re: Spindle output messes up tool change
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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
kevinslathe2.xml
(106.36 KB - downloaded 8 times.)
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Hood
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Carnoustie, Scotland
Re: Spindle output messes up tool change
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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
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Graham Waterworth
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West Yorkshire, England
Re: Spindle output messes up tool change
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Reply #4 on:
December 30, 2011, 06:52:49 AM »
If you issue a M5 before the tool change will it work?
Graham
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G-Code is on the cutting edge
Autovalues Engineering, CNC machining specialists, Bradford, England
Tweakie.CNC
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Posts: 3,263
Super Kitty.
Re: Spindle output messes up tool change
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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.
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Success consists of going from failure to failure without loss of enthusiasm. Winston Churchill.
Hood
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Carnoustie, Scotland
Re: Spindle output messes up tool change
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Reply #6 on:
December 30, 2011, 07:41:02 AM »
Quote from: Tweakie.CNC 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.
No, it is definitely not that, or as far as Mach is concerned, as I never stop the spindle to tool change.
Hood
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Graham Waterworth
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West Yorkshire, England
Re: Spindle output messes up tool change
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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
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G-Code is on the cutting edge
Autovalues Engineering, CNC machining specialists, Bradford, England
Hood
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Carnoustie, Scotland
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
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GytarrMann19
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Re: Spindle output messes up tool change
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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
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