Starting a User Program from LabVIEW

You can use an Invoke Node in LabVIEW to start the User Program on your C Series Functional Safety module. You must start the User Program from LabVIEW in the following situations:

  • You disable auto start in the User Program by deselecting the box on the Module and Diagram tab of the Functional Safety Editor.
  • User-configurable faults in the User Program trigger Fail-safe Mode.

What to Do

  1. Drag the C Series Functional Safety module (NI 935x) from the LabVIEW project and drop it onto the block diagram to create a reference constant.
  2. Right-click the reference constant and select Create » Method for 935x Class » Start Program to place the Invoke Node.
  3. Wire the reference constant to the reference terminal on the Invoke Node.