I want to use Canopen to control muti-axis,by using Canopen example code "CANopen Read Write CAN Frame",one axis is driven successfully.When I add for loop to input an array data,for loop in the WHILE loop is not function.Does anyone know the reason? or How to contorl muti-axis by canopen with NI9881？

Did you have any elements in your array called "NodeID". With that empty, the 3 For Loops in series would have run 0 times causing all of those reference arrays to be empty. And that would cause the For Loop in the While Loop to run 0 times.

You still have 3 arrays in there with no elements. Those wires that appear to hold references for the CAN bus.

LabVIEW

data stream cannot into for loop (motor canopen control)

Solved!

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AAAAA(AMAZING!!!!!) you are absolute an labview expert,That's the point why CAN bus no signal.

I am a student in China,hoping grow like you!

Very appreciate your help!!!!

THANK YOU very much

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LabVIEW

data stream cannot into for loop (motor canopen control)

Re: data stream cannot into for loop (motor canopen control)