Error with 2 Daq assistant

Hello
Another noob joining the community. Here is my question.
What am i doing wrong? I use 2 Daq assistants on the NI9401 module this is for digital input and output. I use it for generating 2 signals. If i test it with 1 it works but if i go to 2 or more it fails. This is the error i get . I have also added the program as an attachment.
Thanks in advance.
Solved!
Go to Solution.

Hello,
That error means that the DIO task is reserved and cannot be obtained by one of the DAQ assistants. There is actually a nice example program on what you want to do. It can be found here:
https://decibel.ni.com/content/docs/DOC-11632
This example does not use the DAQ Assistasnt but the DAQmx API VIs (which the DAQ Assistant is using also anyway). If the order is not important (and since the these DIO tasks are software timed it is probably not an issue you can also choose to use the error cluster from one DAQ assistant and wire it to the other (see attached VI). Doing it that way you force one DAQ task to wait for the other one to finish. In that way they cannot run at the same time preventing for the error to happen.
regards,
Rik Prins, CLD
Applications Engineering Specialist Northern Europe, National Instruments
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Attachments:
2 Daq assistant generating error (3).vi ‏169 KB

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DAQ_Cluster.png ‏17 KB

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