Write values to digital output lines
Note: You cannot use the legacy interface on 64-bit MATLAB®. See About the Session-Based Interface to acquire and generate data on a 64-bit MATLAB.
A digital I/O object.
One or more lines contained by
A decimal value or binary vector.
the hardware lines contained by the digital I/O object
the hardware lines specified by
Create the digital I/O object
dio and add
four output lines to it.
dio = digitalio('nidaq','Dev1'); lines = addline(dio,0:3,'out');
Write the value 8 as a decimal value and as a binary vector.
putvalue(dio,8) putvalue(dio,[0 0 0 1])
You can specify
data as either
a decimal value or a binary vector. A binary vector (or binvec)
is constructed with the least significant bit (LSB) in the first column
and the most significant bit (MSB) in the last column. For example,
the decimal number 23 is written as the binary vector [1 1 1 0 1].
obj contains lines from a port-configurable
device, then all lines will be written to even if they are not contained
by the device object.
An error will be returned if data is written to an input line.
An error is returned if you attempt to write a negative value.
If a decimal value is written to a digital I/O object and the value is too large to be represented by the hardware, then an error is returned.
Note: Refer to the Hardware Limitations by Vendor section before you access National Instruments® devices with the NI-DAQmx adaptor simultaneously from multiple applications.