Mitsubishi Electric MELSEC-LD77MS2 User Manual page 75

Sub functions
When executing the main functions, control compensation, limits and functions can
be added. (Refer to Chapter 13 "Control Sub Functions".)
Common functions
Common control using the Simple Motion module for "parameter initialization" or
"backup of execution data" can be carried out. (Refer to Chapter 14 "Common
Functions".)
Chapter 3 Specifications and Functions
3 - 5