basic input question

[emer]

Hi,
I'm having trouble reading in basic voltage inpus. The error 50103 keeps coming up and I can't find a way to amend it. Any Suggestions would be greatly appreciated.
simple.vi (414 kb)

http://forums.ni.com/attachments/ni/250/10264/1/simple.vi

[Joe_W]

error -50103 means that the "specified resource is reserved. The operation could not be completed as specified." Having looked at your VI you are using two DAQ ExpressBlocks. Unfortunately the configuration does not copy through. Could you also up-load a copy of configData.nce, this can be created from within MAX by using the export function found in the file menu.

Have you tried just using one DAQ expressVI and then writing to a data log file to verify that everything is working?

Kind regards

Joe W
(NI)

[Tristan_J]

Emer,

By using two DAQ assistants in this way you are reserving the resources the the AI channels on your card. What you need to do is specify both channels in the same DAQ assistant. I have re-written your application to do this.

Kind Regards

Tristan
Applications Engineer
National Instruments UK & Ireland

[emer]

HI,
thank you both. Finally got my system readng in data correctly!! (yeah). I also logged the data and checked that it is working. I was having problems with both inputs and outputs of my overall program. However when I tried to combine the outputs in a similar way it wouldn't let me do it. A ideas again (please!!!)

[Tristan_J]

Emer,

It looks like both of the AO DAQ assistants are using the same channel, this is not allowed - you must use different Channels and combine them into one DAQ assistant.

Also you should try to keep your code within one screen size and ensure that your data flows from left to right.

Hope This Helps

Tristan