Our experience with using CAN Jags and java programming (from 3 years ago) was that there was an extraordinary delay associated with CAN traffic. see
http://www.nordicstorm.org/Resources...2/Default.aspx for details.
We coded the same test in C++ and saw nearly no delay associated with CAN.
So I think the latencey of the CAN/read + slave Jag reaction would make or break this thought of reading the output voltage on one Jag and transferring it. Things may be very easily done with our faster RIO.