Machsupport Forum
G-Code, CAD, and CAM => G-Code, CAD, and CAM discussions => Topic started by: rgsparber on June 05, 2016, 02:52:51 PM
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I have been converting a program to be all parameters and ran into an error message. It took me a while to figure it out. I'm posting to first confirm I got it right and, if so, to alert my fellow newbies.
I wanted #2 = [ - #1]. In other words, to invert the sign of the number stored in variable location #1. Error message.
Used #2 = [ 0 - #1] and no error message.
A close reading of the Mach3 manual talks about subtraction but not flipping the sign.
Furthermore, I tried #2 = [ #3 - 1 * #1] and got no error message. I did get a panic opportunity to hit eStop. Mach3 read this as "take the contents of memory location #3, subtract 1.000. Then take the result and multiply it by the contents of #1. Oops.
So my take on this is that I must have that zero in order to change the sign of a parameter. Am I right?
Rick
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Yes you are right :)