Hi, I loaded a copy of .xml file. It does not appear to be loosing steps, it moves the same distance every time, there is just a .0025 shift to the positive after each chain is cut. Would installing home switches solve the problem or maybe write a macro for a software solution?

Hi, Lokey

I don't think so, Try setting your LowActives as shone in the first pic below, If that doesn't help, Set it up as shone in the sec & third pic's.

All of your Axis LowActives should be the same for Step & Direction State, All "Check" or "X", The only exception to this is if the axis controls are not the same type.

Edit: Also try the Sherline 1/2 step mode 4'th pic, It will increase the Pulse width and give your axis cont. more time to see the pulse's.

It's strange that it's only the X axis, Can you swap the axis cont. boards around to trouble-shoot it ?

Give us a better description of your setup.

Post your G code file.

Chip

Hi,  I the problem occurs on all the axis x,y,and z.  I was hoping to find a fix for x and then repeat for y and z. I get overwhelmed if problems become to complex.  One question, does it matter what Cycle Jog Step is set to  when running a project?  I will try your suggestion and report finding. Thanks again and best regards.

Are you running G90 or G91 mode? Is it possible that your system is experiencing rounding errors? In G91 if your code has X.0015 and your machine only moves .001 this could add up.

Hi, here is copy of the G code. I am still testing other suggestion. Thanks again for all help being received. Best Regards

Hi, I found a solution without having to write a macro. I replaced G28 with G28.1 X-0.0015 and I was able to perform the repeatability test with a great degree of accuracy. I had to set the Home software limit to less than zero.  When I cut a project I will have to Home the machine after each chain is cut.  Thank you very much for all support.