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Thread: Shopbot software displaying incorrect depth

  1. #1
    Join Date
    Apr 2001
    Location
    South Elgin, IL
    Posts
    458

    Default Shopbot software displaying incorrect depth

    I created some files and noticed while they were running that the Z depth was being displayed incorrectly. The file was written so that the Z axis was to go to -.003 but the depth displayed in the Shopbot software (newest version for the PRT) was -0.002. This was the depth I had previously run some files at, and then changed them to -.003

    I have double checked the files to make sure it's calling for -.003 and it is. So the software is not displaying the depth properly.

    Is there some setting I can change or edit which will allow it to display to a finer degree - i.e. to more decimal places? Is the Shopbot software capable of recognizing a difference of .001 ?

    I've also noticed that when I Z zero using the S_ZZero file, it's supposed to move the Z axis to .50 but frequently or maybe all the time it reads .499

    I haven't needed this degree of accuracy until last night when I was engraving some laminated door fronts and only wanted to cut into the laminate and not the wood it was glued to.

    NOTE: I'm not talking about Vector - I'm talking about the Shopbot operating software.

    Any suggestions would be appreciated.

  2. #2
    bwclark@centurytel.net Guest

    Default

    Mayo,

    According to ShopBot's website, they claim a step resolution of .002 and a repeatability of .005.
    So, you are asking it to go where it cannot.

    As for the .499 versus the .50, that is most likely a rounding situation. Because of the fractional resolution of the step increment, .500 cannot be reached EXACTLY, but it might be going to .499999998. Since the computer is a "precise" caculator, it displays .499 when for all intents and purposes it really is at .500.

    Hope this helps.

    Bruce Clark
    bwclark@centurytel.net

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