Machsupport Forum
Mach Discussion => Mach Screens => Topic started by: CARTHO on June 21, 2022, 01:36:12 PM
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Hi
In Mach3 version 3.043.062 I perform command G01 X1 F1000 in direct mode
The machine moves to X1.000 but the readout on the screen is suddenly X+0.998
This started today and after I have been calibrating all axis.
Now I try to calibrate back to the same distance that I asked to move but still screen differs from my input when I try to make a direct move!
Even when I Run a program for example Z-0.5 the display shows Z-0.4998
Can anyone figure out this and help me out?
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Don't worry about it, it's rounding error and isn't cumulative. The "error" is of the order of microns.
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The strange thing about this is that it hasn't been like this before.
If I issue a command to move z-0.5 it moves z-0.5 and showed z-0.500. For several years there was no rounding error!
How can I get rid of these errors?
I issued, right now G01 Z-0.500 and it shows Z-0.4982
That is a "rounding error" of 3.6/1000
I believe this is to much, and since it never been seen before I think there is a problem and I would like it to be solved!
In my work with Mach3 I rely on the numbers in the display and I work with them for calulations to next step...
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Inches or mm?
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If you recently recalibrated your axes and you do not have whole number for steps per, the "error" is what you will see .
My machine is metric and I edited my screens to display only two decimals.
Rounding errors are quite normal.
NEVER rely on displayed coordinates for further calculation. You should always use your CAM software for generating G-code.
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My set is metric.
Thank you for all your efforts!
Now the question is how and where to edit so I only have two decimals...