24 DIGITAL SIGNALS USING USB-6008

[fsfunfsfun@hotmail.com]

Dear friends,
i hope that you can help me to solve my problem which i face in my project
 i am trying to get 24 digital signals in labview using USB-6008
i am using 3 chips 74373  .(24 digtal signals through 3 chips 74373 which need to show in the lab view, connect each signal with LED AND SHOW THE RESULT either true or false for each signal)

Thank you

[Dennis_Knutson]

Since the 74373 outputs can be tristated, you could connect all of the outputs together and use 8 lines of the 6008 to monitor the outputs and the other lines to control each 74373.

[fsfunfsfun@hotmail.com]

how can I write the code for that in Labview?

[Dennis_Knutson]

I would recomend you go to the Getting Started with DAQmx page and review the information there. DAQmx is the driver for NI DAQ boards. You have the DAQ Assistant which is a wizard that allows you to create digital input and output tasks. There are also lower level functions such as DAQmx Write (for outputing signals to the control lines) and DAQmx Read (for inputing signals and updating your front panel Booleans).

For LabVIEW basics, there are some tutorials available as well as more extensive classes or books.

LabVIEW also comes with a large number of example programs. Go to Help>Find Examples>Hardware Input and OUtput>DAQmx.

Message Edited by Dennis Knutson on 07-28-2009 10:30 AM