Instrument Control (GPIB, Serial, VISA, IVI)

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WRITE DEVICE Serial

Hello,

 

I am trying to fix a LabVIEW VI that was written in before LabVIEW 6. The VI essentially is communicating with a serial device. The communication program is NOT using VISA drivers but something called "Write Device" VI.

 

Do anyone have any documentation on how LabVIEW used to conduct serial communication before VISA came out?

 

Here is an image of my VI:

 

write device.png

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Throw that code away. There is no way to get it to work and there should be no reason that you even have it. It was only called by some higher level VIs that would be automatically replaced with VIs of the same name that are wrappers around VISA functions. The only way you would have this low level function is if the original code was saved into an llb and stupidly selected to save functions in vi.lib.
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Dennis Knutson wrote:
Throw that code away.

 

Sometimes that's the best advice.

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