close serial driver (Port 17)

[Scott.555]

Thanks.... but I don't think I have all of those VISA options on the 6.1 palette. If they were there it would of been obvious.

Anyway... I have managed to get it to work using Easy Visa Read & Write, with a slight modification made the the Visa(Old)Open command i.e I removed it.

I now have control of the ports required, and it has also solved my problem highlighted in my other thread.
Moral is to use Visa

[Dennis_Knutson]

I'm glad you got it to work. It's strange that the functions aren't on your palette. Do you have the default palette view turned? I also can't find Easy VISA Read and Write on my 6.1 installation. You were correct to delete VISA(old) Open. That's from a old version of VISA. You might want to check which version ov VISA is installed and upgrade.

[tst]

When you say "The low level functions" you're talking about the yellow ones, right? Ones like Device control\status or Open Device? Are you saying they also use VISA? Interesting, I never thought about before. I do seem to recall KB articles as well as NI support personnels who suggested copying serpdrv into the machine even for programs that ran in 7. Oh, well...

[Dennis_Knutson]

In my 7.0 installation at vi.lib\serial.llb, I don't have the little yellow ones. All I have is things like Bytes At Serial Port, Close Serial Driver, Serial Port Init, etc. and inside those are VISA functions. I don't have Fieldpont and I wonder if that's the difference.

[tst]

I didn't say VI.lib\serial.llb. I said VI.lib\Instr\Serial.LLB. There I have the white ones (the old ones, the ones that work with port numbers) and in them I have the yellow ones (these yellow ones use a light blue wire refnum, similar to the TCP refnum). Anyway, looks like you're right, because I just checked on a third computer that has 7.1 with no Fieldpoint installed and the white ones I have there do use VISA internally and numerics externally.

[Dennis_Knutson]

I meant the path you mentioned. It's interesting about Fieldpoint though.

[drval]

You also need to use a copy of the prior serial.LLB (from v6) and have serpdrv in the application path or else the old legacy i/o VIs won't work correctly.