Re: [CAD_CAM_EDM_DRO] G92 and M99 code uses?

Hi Tauseef:
Can you insert a parametric counter into the program ie something like
Vc=Vc-1 and then set a conditional statement to trip program end when Vc=0?
(Vc can be whatever variable name your controller happens to like).
This works ok on my machine. ( I have never seen CNCPro so I don't know what
it can do)

Cheers

Marcus
-----Original Message-----
From: alieron@... <alieron@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Saturday, January 27, 2001 4:23 AM
Subject: [CAD_CAM_EDM_DRO] G92 and M99 code uses?

>hey everyone. I have been playing around with cncpro to figure out
>more of its features so I can use them if needed. I have been trying
>to figure out the "loop" L code with little luck. I have "V" variable
>down pretty good and am starting to understand subroutines. In my
>attempt to figure out machine coordinates (G54-G58) to make multiple
>parts, I figured out a different way to make the machine do the same
>thing over and over again by using G92 and M99! And here is where my
>question comes.. HOW do I STOP M99 (rewind G-code and repeat)? For
>example lets say I want to drill 50 holes 1 mm apart...I would now
>write a G-Code this way:
>
>G81 R.50 Z-5 (single drilling with .50 raise and drilling 5 mm in)
>G80 (cancel drilling)
>G00 X1 (moving X axis 1 mm over)
>G92 X0 (This is the catch! RESETS the machine back to zero)
>M99 (rewind and repeat)
>
>The problem is I don't know how to stop the M99 code and if left the
>machine would keep doing this sequence until it burns out :) How
>would I specify it to do the 50 holes in this example?
>
>One could also make the code more complex! Lets say you wanted to cut
>a bunch of little squares 5 mm apart in a row. G-Code could look:
>
>G00 Z-1
>G00 X2
>G00 Y2
>GOO X0
>G00 Y0
>G00 Z.5
>G00 X7
>G92 X0Y0
>M99
>
>Hope this sparked some ideas! I am learning! What fun!!!
>tauseef
>
>
>
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