Serial port comunication using Visual Basic


Thread Starter


I want to send some voltage (12V or 5V) to TXD pin in the rs232 cable so that it is on the relay in my circuit... How to do it? What programs should I write in Visual Basic??? Please, I need your help.
Why, what is the VB code you are after supposed to be doing? I assume the voltage you require is supposed to be a function of something??

More information required!

Jeremy Pollard

I would control the DSR or DTE line instead. You can have control of these lines via the mscomm control. Good luck!!

Cheers from: Jeremy Pollard, CET The Caring Canuckian!