Digital Input >> Tristate

NI-DAQmx C Properties

Digital Input >> Tristate

Data Type: bool32
Description: Specifies whether to tristate the lines in the channel. If you set this property to TRUE, NI-DAQmx tristates the lines in the channel. If you set this property to FALSE, NI-DAQmx does not modify the configuration of the lines even if the lines were previously tristated. Set this property to FALSE to read lines in other tasks or to read output-only lines.

You can get/set/reset this property using:
  DAQmxGetDITristate
  DAQmxSetDITristate
  DAQmxResetDITristate