Communication with motor control using RS-232

I need to use labview to communication with a stepper motor drive using the serial port RS-232. Could someone please get me started I'm not sure if a should use VISA or instrument I/O. And if I use one of those, how would I set it up?

Hi Phil,
Outside of LabView, how do you communicate with or control the motor drive? If you are able to use software like HyperTerminal or Procomm, then using the VISA serial communication tools will be the simple way of implementing your solution.
Here are some links which may provide clues on how to proceed. You can also do a search on VISA Serial communication.
Happy wiring!!
JLV
LINKS:
Link 1: Although this one talks about an error, it does provide instructions on how to setup the VISA session:
http://forums.ni.com/ni/board/message?board.id=170&message.id=99660&query.id=0#M99660
Link 2: Here are some examples: (good starting point):
http://forums.ni.com/ni/board/message?board.id=170&message.id=65873&query.id=0#M65873
Link 3: more info:
http://forums.ni.com/ni/board/message?board.id=170&message.id=86971&query.id=0#M86971

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Attachments:
pulsgenerate Folder.zip ‏30 KB

Hi iounathing i appreciate the reply it works better now i have fixed the start button issue and the crazy waveform chart.
I think i'm missing something after falling edge and rising edge (if statement?) because when i turn the speedmeter to "0" or "100" the waveform chart keep sending low an high pulse. I wan't a high steady pulse by "100" and low steady pulse by "0" and in between low / high pulse.
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Hi all,
Can anyone help with this please.
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What i am trying to do now is connect through a pid as to control the speed of the motor.
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Is this the correct understanding? and if so can you help with setting up.
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Attachments:
rev per min 5.vi ‏117 KB

Continued from here: http://forums.ni.com/t5/LabVIEW/Error-200290-when-running-a-pulse-count-and-pwm-program-together/m-p...
Please look at what I wrote there. You need only one loop. The PID and Counter Write functions should all be inside that same loop, along with the measurement. The PID will do nothing useful outside a loop.

Communication with motor control using RS-232

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