Using the SMB Port on PXI(e) Controller to Route Trigger Signals

Updated Sep 17, 2019

Reported In


  • PXI Controller


  • PXI Platform Services

Issue Details

Can I use the SMB port on the front of my PXI(e) controller to route trigger signal?
How do I output a trigger from the SMB trigger connector on my controller?


Starting with PXI Platform Services 17.3, you can use the SMB terminals on NI PXI(e) controllers with Pharlap OS for trigger routing. Linux RT controllers support the feature starting with PXI Platform Services 19.0.  You can use /[hostname]/TRIG_SMB with DAQmx Signal Routing VIs as shown in the example from Using the Trigger Line on a PXI(e) Controller.

Alternatively, you can also create a route implicitly, providing /[hostname]/TRIG_SMB as a terminal to a property node associated with a given operation as shown below. This requires less programming and is more automatic, but not all APIs support it. Please note that [hostname] is the controller's name on the network.

Additional Information

If you cannot upgrade to a new PXI Platform Services version, you can use other modules that support signal routing.


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