Hood (mainly), I just got a reply from Cs-Labs re the reset or index situation....
"
The counter value of the CSMIO-ENC module are reset with reset in Mach3 and that is the only way to zero the counters.
To solve that you can use your own UserDRO to which you will copy the counter state.
Whenever you want you can reset your UserDRO state.
The UserDRO reset isn't about entering 0 value to it.
It's about adding or subtracting the value to get the 0 in your UserDro.
"So that answers it then - to reset the counter you have to reset Mach3, the index just enables the counter initially.
So, with some thought, a 'Zero" button should be do-able but i'll save that for another day i think, it works well as long as the reader is down at ref position when you get going, my one is a bit stiff (ooh-err) as the linear motion is pretty poor but was free
, your linear guide version won't suffer this issue.
Interesting.