Copley Motion Control through CAN crashes Labview 2016 32 bit

[clmartinez100]

Hi All - Would appreciate any help in determining what is causing the software to either get hung up or crashes LabVIEW altogether. 

We are using Labview 2016 32 bit, and two Copley Motion Controls STP-075-07 StepNet stage controllers to control and move a linear stage and a rotational stage.  We used the CopleyBasicGui.vi that came with the StepNet controllers as our template to modify for our specific programming goals. Attached are the Labview subvi routines that simply open the device, send and receive commands to the stepney controller then close the device.  These vi’s work just fine in a single operation, but when used repeatedly in a loop, it will either have a soft crash:  it gets hung up at the “copley.setup.vi” or a hard crash: closing down LabVIEW entirely.

1 program opens the copley device at the beginning of the routine, then loops a bunch of times, sending and receiving info from the Stepnet, then closes the device.  This one will crashed Labview entirely after performing 95 out of 100 loops.

The other program opens and closes the device for each command, which results in a soft crash after about 32 loops.  “Home and Load Large Optic Stages.vi” and the other 2 routines are based on the “CopleyBasicGui.vi”.

If you can see where we went wrong, or have another Labview example that shows how to correctly communicate with the CMO 32 bit and the stepnet controllers, that would be great.

Thanks in advance for all your help!

[Brian.D]

When does Error 1172 occur during this process (from your Capture PNG)?

In addition, in the CopleyBasicGui, I recommend connecting your error wires, both to enforce data flow, and you could probe them to see if an error is occurring. 

What hardware are you using for the CAN communication?

[paul.r]

Can you post some of your subvis? Copley.Setup and Linear.AbsMove?

Initial guess is you are opening several references to the same .dll and not closing them. 

[clmartinez100]

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wrote:

When does Error 1172 occur during this process (from your Capture PNG)?

In addition, in the CopleyBasicGui, I recommend connecting your error wires, both to enforce data flow, and you could probe them to see if an error is occurring. 

What hardware are you using for the CAN communication?

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Hi There.  Error 1172 happened during the "Copley LOS Open and Close Exp.vi" around loop #95 out of 100.  This program opens the device at the beginning and doesn't close it until all the loops are done.

The CAN communication is through a Kvaser Leaf Light HS v2, USB 2.0.  

Attached are all the subvis also.  Thanks!

[clmartinez100]

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wrote:

Can you post some of your subvis? Copley.Setup and Linear.AbsMove?

Initial guess is you are opening several references to the same .dll and not closing them. 

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Yes, please find attached all the subvis.

Thanks!

[Brian.D]

I'd agree that you want to look into the references you are making to any .dll. In addition, based on the error you may want to inspect the VIs that are listed there. Lastly, from looking into some of your subVIs, I highly suggest wiring your error clusters, both to enforce data flow and to track errors.