Example Code

NI SwitchBlock: NI-SWITCH Example for Multiple Device Explicit Path Connections

Products and Environment

This section reflects the products and operating system used to create the example.

To download NI software, including the products shown below, visit ni.com/downloads.


  • Modular Instrumentation


  • LabVIEW

Code and Documents



This VI will make an explicit path connection from one column to another in an NI SwitchBlock device using NI-SWITCH.




  1. Initializes your NI SwitchBlock device and sets its topology to the one you specify in Topology Name.
  2. Creates an array of row names and an array of analog bus names for your specific device.
  3. Allows the sharing of your analog bus over multiple devices.
  4. Makes multiple connections from one column to another as specified in the connection list on the front panel, and waits for the switch to finish closing.
  5. Terminates the NI-SWITCH session.
  6. Handles any errors that have occurred.




  LabVIEW version 2012 (or compatible)

  NI-Switch Driver version 4.6 (or compatible)


  NI SwitchBlock and NI SwitchBlock Modules


Steps to Implement or Execute Code

  1. Select your NI SwitchBlock device name, and 'Configured Topology'
  2. Select the list of connections that you would want to make in the Connection List
  3. Repeat this for both your NI SwitchBlock devices
  4. Run the VI and the connections will be made as specified in your list of connections


Refer to the NI Switches Help for the valid channel names for your switch module.


I/O Connections Overview:

Refer to the NI Switches Getting Started Guide and NI Switches Help for information about connecting signals to your switch module.


Additional Information or References

Block Diagram


**This document has been updated to meet the current required format for the NI Code Exchange.**


National Instruments
Software Group Manager

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.