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Variables
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Topic: Variables (Read 3747 times)
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lew
74
Variables
«
on:
March 01, 2007, 08:42:45 AM »
Hi:
I recently got Mach3 running. Finding that I need to tweak old programs from AhHa system.
Have a question on variable programming. In the AhHa system I could use a variable name to represent numbers.
i.e. %down=-2.312
I would then call this variable in several places in the Gcode file.
i.e. G01 Z%down
It made it easy to change the Z value without having to find it in the lines of Gcode.
I usually place the variable at the top of the program.
Now, the question. Can I use a variable to represent a decimal number in Mach3?
I know about the pound character (#) but it can only represent an integer. Not a decimal.
Thanks
Lew
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Graham Waterworth
2,673
Yorkshire Dales, England
Re: Variables
«
Reply #1 on:
March 02, 2007, 03:41:41 AM »
Hi Lew,
you can do it like this :-
O0001
#1=-9.95 (z depth)
#2= -10.95 (width)
G21 G40 G00 G90 G17
G00 X0 Y0 Z25.
S1000 M3
Z1.
G01 Z#1 F50.
G01 X#2
Y#2
X0
Y0
G00 Z1.
Z1.
G01 Z#2
ETC.....
M30
You can do in line calculations too.
X[[#2*2]+#1]
Graham.
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Without engineers the world stops
J Johnson
4
Re: Variables
«
Reply #2 on:
April 29, 2014, 04:49:06 PM »
Graham, are there rules about the order of in line calculations or whether a variable can be used more than once in a line?
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Graham Waterworth
2,673
Yorkshire Dales, England
Re: Variables
«
Reply #3 on:
May 07, 2014, 06:42:35 AM »
Mach3 uses standard maths rules anything in [] is evaluated first as is *, only thing is the whole function must be enclosed in [] brackets. #100=-1 is not allowed so you have to do #100=[1*-1], dont ask why it just one of those things.
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