Looks like that pump may have a serial port and 0-10V analog input to control speed- please check the manual for the specific model number of the pump you have.
The manual has the serial commands, if you go that route use Find Examples in LabVIEW and search for basic serial read and write.
If you prfer to use the DAQ card and send a voltage to control speed, search examples for analog output.
-AK2DM
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