Hi Dennis,
Actually, I only needed to look at the input side of the TDM to see what it was doing. Given the encoder type I pretty much expected the approach taken, it was no surprise. I have no detailed understanding of how things are done further down the pipe, and don't really need to anyway. The change I've implemented does not modify the TDM in any way, it just sits between the encoder and the TDM. Much to my surprise it all worked the first time
I've let the developer know what I've done, he was not really sure that I was going to be successful during my early enquiries so he suggested getting the straight through encoder configuration just in case. Anyway, one fun challenge out of the way, now I need to check it out under the stars.
Oner other cool thing is that with the encoders powered outside of the AN I can push that ota around really quickly and there's absolutely no errors. Not bad for 20,000tic positioning resolution.
Cheers
David