Well, I finally got the DRO mounted on my circa '83 Jet mill. Everything's hooked up, and when you turn the wheels the numbers change. I've started to do the configuration, and right off the bat I've run into a philosophical issue.
Which way should the numbers change (count up or count down) when an axis moves in a particular direction? Is there a "standard" or "conventional" arrangement for this? I can come up with a whole bunch of different arrangements that sort of make sense, but nothing seems quite right.
I seem to remember reading something about this, but I have no clue where or when I read it. As far as I can see, the instruction and installation manuals don't address the issue. Maybe it doesn't even matter, but I'd sure like to avoid future confusion.
I had similar issues with programming microprocessor-controlled microscope stages in the far past, but there was an easy way out. I'd just ask the Principal Experimenter how he wanted it to work, and that was that! IIRC, no two experimenters used the same conventions.
What say ye?