communication through serial port

[parimala]

I want to increase the motor speed of a blower continuously, by pressing a pushbutton switch.I want to automate this by using relays controlled through my labview software.I'm sending the duration how much time it should be closed through the serial port.where should i start.i'm new to labview

[Chris_Rake]

Are the relays controlled by a serial controller, or are you using the modem signals directly?

[parimala]

they are controlle by one ADAM module which is more likely a serial controller.

[Chris_Rake]

OK - the fastest way to get started is to check out the serial examples included in LabVIEW or online (the on-line ones are better). Basically all you need to do is call a VISA Configure Serial Port vi (with the VISA handle, port settings, etc.) and then a VISA Write to send the command.

Let me know if you run into problems with the examples.