ICONs and OCONs:

A) are used to exchange information between function blocks.
B) require a unique tag name.
C) must have the same tag name.
D) all of these

ICONs

Icons are graphic symbols used on a computer screen or user interface to help users navigate software applications or operating systems.

OCONs

is not a commonly recognized key term, likely intended to represent a specific acronym or term within a specialized field. Without more context, a definition cannot be provided accurately.

Function Blocks

Predefined program instructions in PLCs and other control systems used to perform specific tasks, like mathematical operations or logic functions.