I've got (2) extended axis (J7 & J8) that I make a dual axis after I calibrate them (J8 follows J7) so after pairing, a PR will only show J1-J7, I've noticed that if J8 (or J7) suffers a over current fault (requiring the controller to be power cycled) and J8 is no longer zero when J7 is zero, there are no faults indicating that they are no longer synchronized. So, on power up I'd like to put a comparison check on the J7 & J8, and report the un-synchronoused condition. Any place in the system variables I can get J8 value? (Sorry if this is detailed in another thread, a quick search didn't yield anything).
Thanks, Jeff