Many Thanks for advice guys,
Jimthefish, I have swapped the X and Y axis pins around as you suggest, however when operating the shuttle (via the tab key) when I depress the direction arrow keys on the shuttle the X axis still moves in only one direction. (BOTH the Z and Y axis ..... even when the pins have been swapped, work in BOTH directions). Jim bearing in mind this is ALL completely new to me, am I correct in thinking I do not have/use a BOB (Breakout Board) with my set-up?.
PC --- Linked to Heiz step controller unit via Parallel cable. --- Heiz step controller unit is then connected to the Heiz S-720 cnc machine via cables supplied.
Gerry, Have now received a multi meter which I ordered in order to carry out your suggested Voltage test. Could you please confirm in more detail what I should do exactly to check the voltage. Gerry, do I check this 5 volts pins at the end of the Parallel cable after detaching it from the Step-Controller unit. Or should I be removing the cable which feeds the X axis stepper motor at the OUTPUT end of the Heiz Step-Controller unit. Also should Mach3 be operational during testing.
Sorry for being such a numb nuts ................ but the whole world of CNC is completely new to me.
Many, Many thanks for your patience and time.
John