Acquire Digital Data in Hexadecimal Values

This example shows how to write data using two channels on an NI 6255.

Find devices connected to your system and find the ID for NI 6255.

d = daq.getDevices;
d = 

Data acquisition devices:

index Vendor Device ID          Description         
----- ------ --------- -----------------------------
1     ni     Dev1      National Instruments USB-6255
2     ni     Dev2      National Instruments USB-6363

Create a session and add four lines from port 0 on Dev1.

s = daq.createSession('ni');
ans =

Data acquisition session using National Instruments hardware:
   Clocked operations using startForeground and startBackground are disabled.
   Only on-demand operations using inputSingleScan and outputSingleScan can be done.
   Number of channels: 4
      index Type Device   Channel   MeasurementType Range Name
      ----- ---- ------ ----------- --------------- ----- ----
      1     dio  Dev1   port0/line0 InputOnly       n/a
      2     dio  Dev1   port0/line1 InputOnly       n/a
      3     dio  Dev1   port0/line2 InputOnly       n/a
      4     dio  Dev1   port0/line3 InputOnly       n/a

Acquire digital data in hexadecimal values.

ans =