Data Acquisition Toolbox

Port

Specify the port ID

Description

Hardware lines are often grouped together as a port. Digital I/O subsystems can consist of multiple ports and typically have eight lines per port. When adding hardware lines to a digital I/O object with addline, you can specify the port ID. The port ID is stored in the Port property. If the port ID is not specified, then the smallest port ID value is automatically used.

Characteristics

Usage	DIO, Line
Access	Read-only
Data type	Double
Read-only when running	N/A

Values

The port ID is defined when line are added to the digital I/O object with addline.

Example

Create the digital I/O object dio and add two hardware channels to it.

• dio = digitalio('nidaq',1);
  addline(dio,0:1,'In');
  

You can use Port property to return the port IDs associated with the lines contained by dio.

• dio.Line.Port
  ans = 
      [0]
      [0]
  

See Also

Functions

addline

Parent

RepeatOutput