PXIe-1081 Configuring PXI Trigger Routing

Learn how to reserve and route PXI trigger lines in Hardware Configuration Utility or MAX.

Each chassis includes one or more trigger buses with eight lines, numbered 0 through 7. You can reserve and route these lines statically or dynamically. You must configure routing manually for static setups or advanced use cases. Use the Triggers tab in Hardware Configuration Utility or MAX to reserve lines. Reserved lines remain unavailable to dynamically configured modules, which helps prevent signal conflicts. Trigger lines operate independently. For example, asserting line 3 on one bus does not affect other buses.

  • Static Routing—You configure trigger connections manually before runtime. This method is suitable for fixed setups or advanced use cases that require precise control.
  • Dynamic Routing—The system automatically establishes trigger connections during runtime based on device requirements. This method helps prevent conflicts and simplifies configuration for typical use cases.
  • Note Trigger routing behavior depends on the driver and device. Refer to your driver documentation for details on supported routing methods and runtime behavior.