Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: ASC on August 01, 2010, 03:47:51 PM
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Hey guys, I'm working on a rather unique 5 axis dispensing machine and am still quite new to Mach and VB, so I'm having a difficult time with what is probably a simple problem. I have a dispenser controlled by my C-axis that is moved in and out of the work area via a linear actuator. This actuator is moved into place with the M-command M802 (switching output 1). My goal is to have the C axis reset to zero every time the actuator is activated. This is to simplify the g-code when programming the dispenser; Rather than accumulating a larger and larger value each time a small amount of fluid is dispensed, we want to start from zero each time. Can anyone help me with a VB script or any other approach to make my C axis zero each time I activate M802?
My M802 script currently looks like this:
ActivateSignal(output1)
code("G4 P1")
I just need some help on what lines to add to set the C axis to zero!
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try
Dobutton(13)
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And away she goes! That did it perfectly, thank you!
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try
Dobutton(13)
Hey guys, I'm working on a rather unique 5 axis dispensing machine and am still quite new to Mach and VB, so I'm having a difficult time with what is probably a simple problem. I have a dispenser controlled by my C-axis that is moved in and out of the work area via a linear actuator. This actuator is moved into place with the M-command M802 (switching output 1). My goal is to have the C axis reset to zero every time the actuator is activated. This is to simplify the g-code when programming the dispenser; Rather than accumulating a larger and larger value each time a small amount of fluid is dispensed, we want to start from zero each time. Can anyone help me with a VB script or any other approach to make my C axis zero each time I activate M802?
My M802 script currently looks like this:
ActivateSignal(output1)
code("G4 P1")
I just need some help on what lines to add to set the C axis to zero!
I would rather keep it simple. You will want to move the C axis incramental. So the g-code would look something like:
G91
C .01 f1.
G90
This way, you could move the actualtor back to the start when you are done. No need to reset zero. The C axis will move the set amount each time not a known postion each time.
Jim.
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That would work but I need to have all the other axes moving in absolute coordinates at the same time I'm dispensing. I'd be worried that the inremental change would cause an absolute headache.
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Oh, I understand. You will want the C axis moving simultaniously with other axis. In this case then I would use a macro varible. I would have to do some testing but it would go something like:
(At start of program)
#500=0.0
(anywhere in program where you wanted the feed move)
#500=[#500+.05]
G1 X1.0 Y1.0 C#500 F1
Anyways, glad you found your answers.
Jim.