Hi GA1
Never mind if we are talking about cRIO. There is no limit in this case. the Limit applies for the PCI/PXI CAN board together with the CANopen Library for LabVIEW.
But the problem is, we do not have a out of the box CANopen solution for cRIO yet. I made some basic examples to communicate with drives using PDO, but thats only a starting point. have a look to the attached example. It is not that difficult to create your own CANopen solution, if you know the protocoll at least a little. 😉
Its for LV 8.2. Let me know if you need more help.
DirkW