[Stepper motor control with UID-0808THS]

Thanks, Item 1 in your reply was the most important, after looking at the jog example it made everything easier. Once i could jog the motors the homing sequence is pretty simple, and I have used one of the existing over travel switches. A bit more testing to do but seems to be working fine.  

[Stepper motor control with UID-0808THS]

I’m working on a Unistream application using UID-0808THS modules to control stepper motors on an XY table. I have the moves working and the machine sequences through the preset positions but I have an issue with homing.

The homing function woks fine, when initiated to set the current position to zero, or whatever offset is used, but I need someway to move the motors to a position that is the home position, or an offset from the home position, before initiating the home function.

This could be a programmed sequence that goes to a switch input, or a manual jog type function that would allow the operator to move the table manually and then set the home position when it is in the correct position. I can’t find any way to get the motors to move other than the relative or absolute moves on the PTO Move function.

Any help or suggestions would be appreciated.

Thanks, 

Mark