Well... it is funny. I have never gotten so many complaints about doing something right in my life!!!!
To me, it is the way it is supposed to be, coming from an industrial manufacturing background (we used a lot of modbus devices). So I had to look a bit cross-eyed to get Mach 3 modbus working. But Mach 3 people are so used to doing it the wrong way, I guess. Anyway, funny how we can get used to something. We could all probably get used to putting our right shoe on our left foot, given enough time!
If you will look at the modbus connection page, you will see a checkbox to use zero based register addressing. I put that in there because the right way was giving so many so much grief. But the bits are still numbered backwards. I don't think I thought about changing that around. But the correct modbus way should be easier for us to support in the long run. At least I hope so!
I'm glad you got it all worked out. I think I did mention that it was base 1 way back when we first did that plugin. But it is probably buried in annuls of this forum by now. And for what it is worth, Brian STILL trips up on it!
Steve