Communication with PLC

I would like to communicate with a PLC,
there is some type of help, or does anyone have the steps to do this?

Example Program

Hi Alex,
You might post a file with a sample program, with some functions, or a program that is working so we can create our own.
would be very helpful.

Problems with programs

I am wanting to develop an application with the Free Scada,
I'm creating simple programs, but I can not call buttons with actions…
I am also wanting to create a tutorial for setting up the Free SCADA
I need help from someone…