Quote Originally Posted by Neale View Post
what seemed to happen was that you lost one step every time you changed direction.
That's exactly what happens because the last pulse gets sent after the next direction change happens so it gets dropped.

To be honest, can happen on any system. The reason it tends to happen on these is that of the flexibility both drives and controller give. Meaning it's easy for one or other to be set wrong. Majority of older or lesser drives only allow rising edge which is ok for most sytems until you get controller that use's the falling edge.!!