[PLC/Siemens] Understanding of Siemens PLC

Siemens PLC

OOP 

Function block

data block

PROFIBUS -> PROFINET

Memory structure

BIG ENDIAN

M0.3 -> 1bit

MB2 -> 1byte

int: sint(8bit) int(16bit) Dint(32bit)

real: 32bit

!! memory plan important

MB1

M1.3 중복사용X