im really sorry Clive for all this mess. Right in red yes i move the spindle to where i think zero should be the zero point , if i say moving the zero is 1mm the clock count in red reads 1mm when i move all xyz 1mm xandy move as it should set zero home position then the count in red returns to a zero readout. If i tell it to jog on the z axsis 1mm and press run the spindle runs about 20mm but on the readout red screen it says it has run only 1mm so that reads correct but the spindle is wrong
The DRO if set to 1mm will show only 1mm.
if i zero the DRO Then run 1mm then move down it doesent show any aditianal numbers. hear is a link to my you tube page with a ideo i took to try to help you. https://www.youtube.com/watch?v=din0GjuplG0
All the best Colin