Thanks so far ,to recap of today,

from what I can gather , to start the machine up I power on at isolator, screen lights up with power interrupted, I them press power button on pendant, then the move over reference points appears for XYX. I then press cycle start and it should reference z first but it will not move, instead all that happens is the main spindle motor fan comes on and stays on,,an I pressing the correct buttons in order to reference it
looking in the right hand side cupboard there is a green light top left on a small metal box, there are green lights on three of the boards in the bottom of the cabinet,
the left most board has two lights, next along has two lights and the third along has 4 lights, the far right board has no lights on.
I do have another interact series 2 interact 2 and this has three boards in the cupboard and all three of these boards have 4 green lights on them , is this relevant.
I cannot check params as when I press MOD then curser up button I get message " key inoperative"

am I pressing the right buttons o=in the right order for referencing on a 150b



the heidenhain link may as well be printed in Chinese as I don't understand electrics very well and certainly not circuitry but thanks for the thought

cheers carl