USe labview to to read hardware ports

Hi ,
I would like to know if Labview progranming language is capable
of reading hardware ports from a computer( ie I make a card that plugs into
a PCI
slot of my computer, is there a way to speak to that card from labview)

Denis Barkats wrote:
> I would like to know if Labview progranming language is capable
> of reading hardware ports from a computer
The answer is: yes, with some qualifications depending on the OS you are
running. The Online Help or reference manuals should provide info on the
built-in "In Port" and "Out Port" functions for port I/O, and there are some
good resources on the NI Web site for additional help if you're running NT or
equivalent, such as:
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&2851D0A06E3185BC8625683A000AC730&cat=034E59A8530E09DF862568900018707A
Rummage around for "in port" or "hardware registers" on the NI site.
Regards,
John Lum
National Instruments

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I am trying to use Labview and RP1210 compliant hardware to connect to a truck J1939 bus and receive messages.

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Thanks
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When I am using LabVIEW DAQmx Dig I/O Port Input My Phys

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ical Channels says 'No supported devices found'. I am using the Polhemus Fastrak and attempting to write a driver for the Serial port interface. Please explain how to find the supportive devices. My background in DAQ and Labview is very weak. THANKS!!!You do not have a DAQ device in the sense of having a board in the PC that does data acquisition. You cannot use any of the DAQ or DAQmx functions for communication with your serial instrument. In your posting to the LabVIEW General forum, you stated that you were using VISA. That is the correct approach. First however, you should try to communicate with the device using something like Hyperterminal and verify all of the settings and cable are correct before trying to write a driver. You might want to take a look at this tutorial.

"how to read parallel port using labview"

"i am doing a bio medical project and need to read data from parallel port using labview. can anyone help me"

Hi
in most cases a simple example helps best.......see attachment. Find in addition in Word document a helpful picture of LPT - Pins.
In case you work with WinNT, W2k, XP - you need to install accesshw.
Regards
Werner
Attachments:
printer_port_test.zip ‏41 KB
dsub_25_parallel_port.doc ‏29 KB

"how to read serial port using labview 6.0"

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This link, and the links from it, are a great place to start:
http://zone.ni.com/devzone/conceptd.nsf/webmain/8DECBF3E0B714BF3862568F9006E7851?opendocument
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Solved!
Go to Solution.

Yes, it is possible to transfer files with the serial port using LabVIEW. Files are just collections of bytes and the serial port is pretty good at shipping bytes from one PC to another. You need to connect the serial ports together with a null modem cable.
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OK, so once you are able to create files, write bytes to them, and read bytes from existing files you can move on to transferring.
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Certified LabVIEW Architect
PrimeTest Automation

Using labview to read from flow computer using modbus

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Frustrated,
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CompactRIO Out of the Box Video

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Solved!
Go to Solution.

Attached herewith is a print screen of what is showing on MAX
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Hopefully that clarrifies something.
Attachments:
Untitled.png ‏212 KB
Untitled.png ‏212 KB

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How can I use LabVIEW to send the equivalent of a CTRL D (in VT 100 format) out the serial port of my computer?

I am trying to write a vi that interfaces with a piece of OEM equipment that is set up to talk with a VT 100 terminal. I can't seem to locate the ASCII equivalent string (if there is such a thing) of a CTRL D. Is there a vi that emulates VT 100 commands?

If I recall, CTRL-D is EOF on most ASCII tables.
You'd probably have to use an escape sequence
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In article <[email protected]>, TLS
wrote:
> How can I use LabVIEW to send the equivalent of a CTRL D (in VT 100
> format) out the serial port of my computer?
>
> I am trying to write a vi that interfaces with a piece of OEM
> equipment that is set up to talk with a VT 100 terminal. I can't seem
> to locate the ASCII equivalent string (if there is such a thing) of a
> CTRL D. Is there a vi that emulates VT 100 commands?

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Hi,
I have a XY stage which I can control using mach3 software. I want to control a signal generator, VNA and the XY stage at the same time. I have programmed SG and VNA using Labview but I am having difficulties controlling XY stage using Labview. I have never controlled an instrument connected through parallel port using labview.
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Hi srms,
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Thanks

Two questions:
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Thank you in advance.
Regards,

If you are trying to use In/Out port functions that come with LabVIEW they will not work with NT. I think the AccessHW file at the following link will fix that problem:
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USe labview to to read hardware ports

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