Quote Originally Posted by richie00boy View Post
Thanks for that, looks like they are Maplin code FK24B.

When it starts doing it again I'll swap X and Y cables over and see if it changes over. Is there any great danger in plugging and unplugging connectors on the control box when it is on?
As long as the steppers are not powered at the time... if you can turn them by hand then its safe to unplug them... I wouldnt recommend trying it when they are powered up. Normally the control box can be powered but the system is halted in standby, which is not the same as stationary but enabled (when the motors are locked). But as Jazz says, if in doubt, don't.