thawkins

Just came to this discussion via a link from a comment here and wanted to register my vote against the 'null wire' idea, sorry. I don't see the huge advantage over sequence structures for the relatively small number of use cases and it introduces not only a new bit of visual language which new users have to learn before they can understand other people's LabVIEW code, but also a new functionality that new users (or programmers coming from text languages) are quite likely to misapply in order to force linear code into LabVIEW instead of learning to think in dataflow. I believe if NI introduced this, we'd all regret it pretty soon ;-)

I haven't dealt directly with Weeder but I have used some of their modules which I bought from Audon Electronics here in the UK (who call them 'Stack-DAQ'). I've found Audon to be helpful and responsive. I don't have any experience with the thermocouple module but have used their DIO and stepper motor modules and several of the 8-channel analogue input modules. They all work OK but the readings from the analogue modules are subject to fluctuations of a few counts - within the accuracy spec but could be annoying in some applications. They're easy to drive from LabVIEW code. I'd recommend them as long as you're not expecting premium performance from a budget priced product.

Maybe I'm missing something, but when I download the last version of the VI above, it still doesn't preallocate the buffer for the return string. I've modified it to do this, and added a connector pane and icon. However, as described in a recent Info-LabVIEW post, I wanted to get the path to the All Users application data folder which isn't available as an environment variable. With a little digging I found that the approved way to do this is to call the SHGetFolderPath function in shfolder.dll and I've created a pair of VI's to do this. I've only tested them on my system (LV 7.1.1 on Windows XP SP1) so any feedback on how they work on other configurations is welcome... Tom Download File:post-1157-1149604122.vi Download File:post-1157-1149604138.llb