2. Variable
This chapter mainly introduces the different types of variables, including retained variables, global variables, local variables, IO variables, etc. This chapter can be used to gain a preliminary understanding of the variables.
📄️ 2.1 Variable Segment and Valid Range
variable segment and valid range
📄️ 2.2 Constant Variable
Constant variable
📄️ 2.3 Retained Variable
retained variable
📄️ 2.4 GVS
GVS
📄️ 2.5 I/O Variable
I/O variable
📄️ 2.6 Local Variable
local variable
📄️ 2.7 NGVS
NGVS