Giant 20' x 3' x 2' router build

[JAZZCNC]

Charlie just read your earlier post about not returning back to where it started from.? This could be the Step pulse edge is set on the wrong side in the drives so it drops a step with each direction change. This is easy checked and corrected.

To check just knock up some G-code for each axis that goes back and forth many times. Like Below.
G0 X75
x0
Copy and paste few dozen times into a file then Zero the Axis and make a mark to check if comes back to same spot then run the G-code.
Using Notepad then just do replace search and replace X with Y and repeat for each axis.

If it doesn't come back to the same spot then go into Ports and pins and toggle the Active Hi/low setting for the STEP to opposite state for which ever axis is wrong. This and the ENABLE setting are the only functions the ports n pins for motor outputs have on the Cslabs controller so ignore the rest.

EDIT: Other way to do it is thru the EM806 Drive software and changing the Active edge state but this is easier option.!