daq assistant no longer provides icon wiring terminals

[king10208]

I'm using NI-DAQmx 8.8.0f2 and LavVIEW 8.5.1, and suddenly any DAQ Assistant express vi that I drop into my wiring diagram no longer gives me any terminals to wire to.

Additionally, they will show blank when I try to "open front panel" and convert them.

This follows other difficulties I had with my 96-channel acquisition DAQ Assistant express vi not carrying individual channel input limits after modifiying them in the wizard interface. I had to convert that to "code" and alter the channels individually there.

I've got to say I'm tremendously disappointed in this version of NIDAQmx/LV. I ran LV4 and tradition Ni-DAQ on an install in the early 90s that ticked along for a decade problem-free. This express business has cost me MUCH more time than learning the old ob0:sc1:md3:12-16 syntax of old.

But enough complaining - how should I go about regaining the functionality of the express vi system? I can copy old express vi's in my main vi, I just cannot seem to modify them any longer.

[Chris_W.]

Hi king10208,

I am not sure why the DAQAssistant is giving you this kind of behavior. That certainly is not expected behavior. It may just be that something didn't install properly with your DAQmx 8.8. You could try to repair or re-install the driver. 

For me personally, I would stay away from using the DAQ Assistant and simply use a DAQmx task. If you want to change the input ranges of particular channels you can modify this using a DAQmx property node. I have attached a picture that shows a simple task that changes the input ranges to particular channels. Also, you can use the old syntax that you mentioned. you can do something for the channel input like 6251/ai0:15. 

Chris W

[king10208]

It had to have installed correctly at some point, as I used it to generate the bulk of the business side of this vi. That said, perhaps it has mysteriously become damaged somehow. I'll try a repair and see if that works. Thanks for the image. I had to do that with my main acquisition vi but was hoping to avoid it for the simpler analog output one that is giving me fits presently. I'll post an update on the repair attempt.

[king10208]

A Ni-DAQ 8.8 repair install and reboot has left me where I started, nothing to wire on to.

Argh.

[Chris_W.]

It sounds like it may be some piece of your driver that is corrupted. This likely would not be fixed by simply repairing the driver. I was hoping that maybe it was because of a missing link to a certain dll or something which could be fixed by a repair, but apparently that is not the case. I'm sorry that you have to go through this annoying process, but I think that the only way to fix it is going to be to actually re-install your DAQmx driver. Here is the link to the DAQmx 8.8 page on our website if you don't have a copy of it with you.

Chris W

[king10208]

And just to be perfectly clear, that will require a complete uninstall / reinstall of just Ni-DAQ, or also of LV 8.5?

[Chris_W.]

This will just require you to Uninstall and re-install NI-DAQmx, since that is the part of NI-DAQ that includes the DAQAssistant. I should have specified that before. My appologies.

Chris W

[king10208]

The uninstall / reinstall appears to have fixed the problem.

Frustrating, but at least it's working now. How long will it last is the big question, I suppose...

Thanks again for all the help. I appreciate it. After you troubleshoot these things for awhile, you feel somewhat silly uninstalling / reinstalling and such, even though it's obviously such a first-string remedy. Hah.

[Chris_W.]

You are certainly right, it is frustrating. And the part that bugs me is that most of the time we can't really explain why such a file or dll got corrupted. Oh well, atleast you're up and running. Glad to hear that helped 😉

Chris W