NiDAQmx using from C++

I need to acquire and process readings from a NI 9203 module in a chassis of cDAQ9184. The frame contains the other modules that are read by other software. If I understand correctly, that a single request can book the chassis and if this is true then I guess I'll have to read all the modules in the chassis then transmit the data to the other modules for other software.

Is the best way to create a task for each module and have a function separate from 'EveryNCallback '? This seems a bit over the top, especially because there are in fact two chassis on the network.

Would it not be better to declare the global virtual channels using MAX. This would both my software and other software to access the data. This also raises the question of how fast the virtual channels are updated.

Sorry if these questions are stupid, but I'm a noob DAQmx.

Thank you

Tony

My advice would be to keep all your data in a program acquisitions, for example, you can do your aquistion given in LabVIEW then use the DLL node for transmitting data in your C++ code for prossessing. See what you think.

James

Tags: NI Hardware

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