Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: M250cnc on November 22, 2007, 10:45:52 AM
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Hi all.
Why does using the drilling canned cycles change constant velocity to exact stop. >:(
Is it possible to keep constant velocity when using drilling canned cycles
The Code i am using "G99 G83 Z-10. R-5.6 Q2. F15."
Phil_H
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I think its the G80 that kills all modal commands, I asked Art about changing this some time back, so everything went back to how it was before the cycle call, but it sounded is if that may be a major job. Maybe in Quantum.
Graham.
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Hi Graham thanks for the reply. That is bad news. Come on Art forget Quantum, fix Mach. ;D
As i lose position every time i run the part, i will do a subroutine for the Z axis.
But i am unsure of the correct syntax for subroutines i have searched the forum and found none, i have only seen the examples in the PDF manual.
Do you have an example to hand ?
The machine works fine except in exact stop mode
Phil_H
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you can do it like this:-
%
G20 G40 ETC.
G00 X0 Y0
M98 P1
G00 X1. Y1.
M98 P1
ETC.
M30
O1(SUB)
G00 Z-5.6
G01 Z-8.6 F15
G00Z1.
Z-8.
G01 Z-10.
G00Z1.
M99
%
Graham.
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Thanks Graham
Phil_H