Serial Communication

[Tims]

Hi Alan

I have been creating LV5.1 executables on a win95 machine for programs that have VISA drivers. I use VISA to talk to both GPIB and
Serial instruments.

I only have the preloaded GPIB drivers and serpdrv.dll drivers installed, not VISA drivers.

My programs seem to work OK as is.

Tim S


Alan Brause wrote:

> I agree totally Roderic, there are many good reasons to use VISA over
> the serial port vis. In my situation I use serial port vis to keep the size
> of my distributed .exe smaller. It's an additional layer of complexity
> for my end users to have to download and install the VISA components.
>
> I can hardly wait until LV comes out with a single driver for VISA like
> serpdrv. I'll go to VISA in a heartbeat.
>
> Or has anyone figured out how to distribute a VISA .exe app with a single
> driver????
>
> Alan
>
> Roderic Don wrote in message
> news:3857A880.91863E02@ccm.udel.edu...
> > Alan Brause wrote:
> > snip snip....
> > Alan's advice is excellent, the only thing I would add is to use VISA. It
> > allows setting and enabling a termination character on reads, which for
> > situations where there are a variable number of bytes returned is a real
> > convenience - no need to build in a pause and to read the bytes available
> in
> > the serial buffer. You can also change the termination character on the
> fly
> > if needed (I do).
> > VISA also allows locking of its "sessions", which has worked out well for
> me
> > with a setup where I have a variable number of devices attached to each
> > serial port in daisy chain fashion (both RS-232 and -485). So I have
> parallel
> > loops to handle communication with each device, and lock and unlock the
> > shared port/session as needed to prevent communication mix-ups.
> >
> > Rod
> > --
> > Roderic Don
> > Research Associate II
> > University of Delaware
> > Center for Composite Materials
> > 302-831-8352
> > 302-831-8525 (FAX)
> > ---------------------------------------------
> > "Stressed would mean that the pandemonium can be measured!"
> > - Scott "Scooter" Holmes
> >
> >

[abrause]

Hi Tim,

Now you've got me curious.
What do you install on the target machine besides the .exe?
When I try to run VISA on a target with just the NI Run-Time library,
I get "VISA code library not located or loaded" error.
How do you preload GPIB?

Alan


Timothy John Streeter wrote in message
news:3857FB60.15F1C549@tait.co.nz...
> Hi Alan
>
> I have been creating LV5.1 executables on a win95 machine for programs
that have VISA drivers. I use VISA to talk to both GPIB and
> Serial instruments.
>
> I only have the preloaded GPIB drivers and serpdrv.dll drivers installed,
not VISA drivers.
>
> My programs seem to work OK as is.
>
> Tim S
> >

[Tims]

Hi Alan

After installing the GPIB card I install NI's GPIB software which includes Automation Explorer etc.

I had downloaded the latest VISA drivers to install just incase but it turns out that I didn't need them.

Tim

Alan Brause wrote:

> Hi Tim,
>
> Now you've got me curious.
> What do you install on the target machine besides the .exe?
> When I try to run VISA on a target with just the NI Run-Time library,
> I get "VISA code library not located or loaded" error.
> How do you preload GPIB?
>
> Alan
>
> Timothy John Streeter wrote in message
> news:3857FB60.15F1C549@tait.co.nz...
> > Hi Alan
> >
> > I have been creating LV5.1 executables on a win95 machine for programs
> that have VISA
drivers. I use VISA to talk to both GPIB and
> > Serial instruments.
> >
> > I only have the preloaded GPIB drivers and serpdrv.dll drivers installed,
> not VISA drivers.
> >
> > My programs seem to work OK as is.
> >
> > Tim S
> > >