Forgive my ignorance, I need to do closed loop level control. I don't have much expertise about the interfacing aspects.Help me.

[3X24YB639]

My project work is to do predictive control of dead time processes. I plan to do a level control in real time with a long inlet pipe to introduce dead time.Control algorithm is not much of a problem for me. But I have very little idea about the interfacing aspects of Labview. I plan to use a dp transmitter as the sensor and a stepper motor based needle valve for control. Can anyone please help me?

[Ray K]

National Instruments has many easy to use VIs that interface with plug and play National Instruments DAQ, GPIB, Serial, and CAN card. They type of card you buy depends on the communication interface that the sensor and stepper motor use. What kind of interface do your devices require?
Ray K
NI Applications Engineer

[3X24YB639]

Thanks for responding. Actually in our lab we've got a 'Nudam server' and serial interfacing kit. We've got an RS485 to 232 converter.I've heard that one can directly connect the 4-20mA output terminal from the transmitter to that kit. I would like to know how one should configure Labview so as to recieve the input and similarly to control the stepper motor based control valve.Thanks again...

[Ray K]

Hello,
I am not familiar with what a 'Nudam server' is but I sounds like a driver running a control loop. If that is the case, you need to contact your vendor for more information. If you want to serial communication with LabVIEW, then you can just use the examples that come with LabVIEW at Help >> Examples >> I/O interfaces >> Serial.
Regards,
Ray K
NI Applications Engineer