Tweakie,
First, thanks for helping.
I checked pin #1 at the mill end of the parallel cable (cable unattached from the mill). It is high (5V) no matter what Mcode I send. Not a flutter between M3, M4 or M5.
I tried changing the Dir Pin # from 1 to 3 (which I didn't see being used anywhere) but the same thing. I wasn't sure what I am doing there so changed it back.
At least we seem to be isolating the problem towards the computer (which is bad because I'm on my second computer now)!
Any ideas from here?
PS this has been a consistent problem since I got the used mill a week ago. 2 computers, 2 on-board parallel ports and 1 pci parallel port (switched from one computer to the other), several profiles and all behaving exactly the same way.
Thanks
Mike aka groundhog