Quote Originally Posted by JAZZCNC View Post
Charlie do you control on/off thru software.? If so then just swap wire going to "For" to "Rev".

Or if you want both forward and reverse options then setup another wire coming from Spindle control relay to the "Rev" and use M4 in your G-code.

cheers guys I guess it would be handy to have booth available I will have to open it up and see if tony wired it like that already

many thanks