labview serial Port-VISA and Subvis

[ku637]

Hi all,

I need to develop a hyperterminal like application in labview.I ve only lv6.1 version son cant open vis in higher versions.

I a basic question

1) I need to create a sub VI using VISA ,then how to pass the resource name to the next Function from the subVI?

There is a sub VI i created. it just initializes the serial port using VISA.i want to experiment this, to be used as a sub VI.

I can pass the input resource name but how to get the outpt visa resource name from the sub VI...?

Will the VI session will remain open..?

normally i wire up duplicate resource name from visa initialize output to the next block but how to do it wen i want to put it inside a sub VI ?

hope its clear now

please put a jpg file of VI if possible (incase anybody is returning a VI) i cant go for higher versions becoz of license issues in my institution

thanks

Steve

[crossrulz]

You can simply create a VISA indicator and pass the reference out that way.

I create chains of VIs to read, write, change baud rate, etc. using the VISA resource reference and the error cluster. Seems to work quite well for me.

[Neville D]

There are a number of Hyperterminal-like interfaces using VISA and LabVIEW, written by various people. Scott Hannahs is one of them. Search around LAVA for other examples.

N.