This is usually a unit values problem.
Open the ShopBot control software.
Type a UR command (or click on Utilities > Reset Default Settings values on the top menu bar). Click Yes and OK to the next two boxes that pop up.
When asked to select a settings file for the tool, click on the profile that matches the tool (PRS ShopBots folder for tools like the PRS Alpha, Standard, Desktop, and MAX. Settings for older ShopBots folder for PRT tools, BenchTop, and PR).
Type in a C3 command to zero the XY axes off of the proximity switches. The machine should now be moving the correct distances.
Check rack & pinion for proper mesh. See Cut problems below or document SBG 00203 “Mechanical Troubleshooting” under Maintenance on the website.
The tool may not match the default motor and pinion configuration. This usually only happens if a motor or pinion has been replaced, a tool was acquired from someone other than us, or if a custom tool was ordered. To determine correct settings for these tools, see this document on Setting Unit Values from the Website under Maintenance:
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