NI-SWITCH supports multiple module scanning for PXI/PXI Express switches in NI-DAQmx and NI-SWITCH.
Note   Some devices may not support scanning. Refer to your device book for more information about supported features.

NI-DAQmx

NI recommends NI-DAQmx for multiple module switch scanning. You can access the NI-DAQmx multiple module switch scanning programming examples at <LabVIEW>\examples\DAQmx\Switches. For more information about developing a multiple module switch scanning application using NI-DAQmx, refer to the document, Multi-module Scanning with National Instruments Switches at ni.com/info using the info code ex797g.

NI-SWITCH

To scan multiple switches using NI-SWITCH, you can write a scan list or use the programming examples. When scanning multiple switch modules, you must duplicate the NI-SWITCH programming example for each switch you want to scan.

Determining the Scanning Setup

The scanning setup is dependent on your hardware and triggering scheme. Based on your hardware and triggering scheme, choose one of the following scanning setups:

Tip   The niSwitch Multi Switch Synch Int, niSwitch Multi Switch Sync Ext, niSwitch Multi 27_28 Sync, niSwitch Multi Switch Hand Int, and niSwitch Multi Switch Hand Ext examples mentioned in the following sections are available at ni.com/support. Click Example Code and search for "Switch Multi-Module Scanning."

PXI/PXI Express Scanning—Synchronous

  • Setup 1—Using Internal PXI Trigger Lines
  • Setup 2—Using AUX Trigger Cable Connected to Front of PXI/PXI Express Switch

PXI/PXI Express Scanning—Handshaking

  • Setup 3—Using Internal PXI Trigger Lines
  • Setup 4—Using AUX Trigger Cable Connected to Front of PXI/PXI Express Switch