What do the function blocks mean?

In software languages, a function block contains input variables, output variables, through variables, internal variables, and an internal behavior description of the function block. Function blocks are used primarily to specify the properties of a user function. Many software languages are based on function blocks.

1. What is a block in a function?
2. How are function blocks used in PLC?
3. What are functions in block coding?

What is a block in a function?

A block is a chunk of code that can be invoked kind of like a function, but not quite like one: a block only appears adjacent to a function call such as . each , and that function may or may not use that block by “invoking” it (executing the code inside it).

How are function blocks used in PLC?

A function block comprises of a logic written inside in it; with inputs and outputs linked to it. So, you can use multiple instances of this function block by simply linking its inputs and outputs with different variables. Refer to the below image. It shows two instances or uses of the timer in the program.

What are functions in block coding?

Another essential concept in coding is functions, which allow you to store a piece of code that does a single task inside a defined block, and then call that code whenever you need it using a single short command — rather than having to type out the same code multiple times.