i'm programming fbd. but i don't have document FBD
please send me a little document FBD
Are you asking for programming fbd in freelance ? if so, you must be using CBF for that check CBF help(check image below) you will find detail about how to program fbd, also each function block help can be accessible via block parametr mask. That will be quick guide to you.
Feel free to question back if you have any difficulty is using fbd.