Data Acquisition Toolbox

Line

Contain hardware lines added to the device object

Description

Line is a vector of all the hardware lines contained by a digital I/O (DIO) object. Because a newly created DIO object does not contain hardware lines, Line is initially an empty vector. The size of Line increases as lines are added with the addline function, and decreases as lines are removed with the delete function.

You can use Line to reference one or more individual lines. To reference a line, you must know its MATLAB index and hardware ID. The MATLAB index is given by the Index property, while the hardware ID is given by the HwLine property.

Characteristics

Usage	DIO, Common
Access	Read/write
Data type	Vector of lines
Read-only when running	Yes

Values

Values are automatically defined when lines are added to the DIO object with the addline function. The default value is an empty column vector.

Example

Create the digital I/O object dio and add four input lines to it.

• dio = digitalio('nidaq',1);
  addline(dio,0:3,'In');
  

To set a property value for the first line added (ID = 0), you can reference the line by its index using the Line property.

• line1 = dio.Line(1);
  set(line1,'Direction','Out')
  

See Also

Functions

addline, delete

Properties

HwLine, Index

InputType

LineName