differents between FCs and FBs

[Moustafa Elsherief]

What is the main differents between FCs and FBs andwhich case is better to use FBs and which better case to use FCs

 

[Nick B]

FC's are best for calculation and logic that require no static memory or worth monitoring. Example: Finding the highest number or average of 3 numbers.
Value1
Value2
Value3

Temp1 = Value1 + Value2
Temp1 = Value3 + Temp1
Result = Temp1/3
Your not interested in the intermediate results etc.
This would be perfect for FC. I only do the simplest stuff in FC's. I use FB's probably 80% of the time.

If you need timers or other static data FB's are best. I do all my larger code sections in FB's. Multi-Instance FB's I use extensively. Very powerful and efficient.

 

[Pandiani]

This is what you need.