Probing problem with while do loop.

[crazy^millman]

Ok I am having problems with this while do loop.

 

code:

---

O00000474(C AXIS WORKOFFSET RDB)

#150=#7785(C AXIS WORKOFFSET VAULE FOR P40)

#151=#5025(MACHINE C AXIS POSITION)

WHILE[[#150-#151]GT.001]DO1

T40M06

G00G54.1P40G90B90.

G43Z2.0

G00X4.Z4.1Y0

G65P9610X3.25Y0

G65P9618X3.05Y4.B2.S140(CHECK C AXIS OFFSET AND UPDATE C AXIS WORKOFFSET)

G65P9610X3.25

G00G91G28X0

G00G90G54.1P40C20.(MOVE C AXIS TO APPLY NEW C WORKOFFSET)

G00G90C0.(MOVE C AXIS BACK TO C0)

END1

G91G28X0

G91G28Z0Y0

M30

---

The problem is that when it does the probing that works great and will correct the C offset updat it untill it is within the tolerence I give it. The problem is that when it gets to the tolerence it just keeps going and will not stop the loop. I reset the program and run the program above it it will complete the program without having to run the program. I have tried doing #152=#150-#151 and WHILE[#152GT.001]DO1. I also tired using GE(greater than or equal to) and still got the same results with and without using the above statements.

 

I am thinking about switching to IF and GOTO and seeing if I can get it to work that way but think the WHILE[]DO loop should work. I have some conditions to add to this but if I can not get this to work then kind of barking up the wrong tree so to speak.

 

I can get all of the probing cycles to work just fine, but here is where I am having a fit.

 

Appericate anything you can offer or any help.

[Lloyd]

Ron,

 

Are you allowed to add and AND condition?

 

Ex. WHILE[[#150-#151]GT.001AND#150LT.003]DO1

 

Just a shot in the dark.

[Tim Johnson]

quote:

---

The problem is that when it gets to the tolerence it just keeps going and will not stop the loop.

---

Is it possible the tolerance is within -.001?

 

edit:

 

WHILE[[ABS[#150-#151]]GT.001]DO1

[JG]

quote:

---

I have tried doing #152=#150-#151 and WHILE[#152GT.001]DO1.

---

Maybe put a M0 at the begining of the DO loop and look at #152 to make sure it is acting as expected...

 

Jg

[Mgrenier]

Ron,

 

Not quite used with the While-Do loop, but I don't see where variables #150 and #151 get updated after they were read before the While command.

 

Also, could someone tell mewhere does the program returns when it reaches the line wine END1?

[Reece L Gibson]

WHILE[[#150-#151]GE.001]DO1

[3R!< W3NG3R]

It goes back to the while line after end.

 

crazy, you need to update the #150 and #151 inside the while loop, or else they stay the same number, giving it no reason to end.

[crazy^millman]

1: I tired it without the condition statement using the #152 and doing the math in a different place no help.

 

2: Yes the tolerence can be .001 becuase the C axis can move to .0001 degree.

 

3: The idea is to run the Macro complete and start running part as with any probing cycle. So an M00 will just be a delay I am not looking for, but might add it just to keep it running.

 

4: The workoffset varaible updates when you do the probing cycle the S140 will update the C axis workoffset vaule when doing the P9618 cycle. The machine postion updates when you move the C axis and then bring it back to 0. I will however try putting the Varailbes inside of the While Loop and see if that makes a difference. It might not be release one of the varaibles thus repeating the loop. I will let you know how this works.

 

Again thanks for the ideas.

[3R!< W3NG3R]

when the workoffset is updated with S140, is the variable #150 updated at the same time? I don't think it would be. The while statement is looking at what #150 is. When you set it to =#7785, that is what it will be until changed (not until #7785 is changed but #150 as they WILL change independantly)

[crazy^millman]

I changed it to this:

code:

---

O00000474(C AXIS WORKOFFSET RDB)

N10

#150=#7785(C AXIS WORKOFFSET VAULE FOR P40)

#151=#5025(MACHINE C AXIS POSITION)

#152=[#150-#151]

T40M06

G00G54.1P40G90B90.

G43Z2.0

G00X4.Z4.1Y0

G65P9610X3.25Y0

G65P9618X3.05Y4.B2.S140(CHECK C AXIS OFFSET AND UPDATE C AXIS WORKOFFSET)

G65P9610X3.25

G00G91G28X0

G00G90G54.1P40C20.(MOVE C AXIS TO APPLY NEW C WORKOFFSET)

G00G90C0.(MOVE C AXIS BACK TO C0)

IF[#152GT.001]GOTO10

G91G28X0

G91G28Z0Y0

M30

---

I have to add my ABS and couple other things, but got it going thanks for the help and ideas.

[3R!< W3NG3R]

yes, now the #150 and #151 are updated within the loop.

 

Glad to hear you got it working.