数据类型：POINTER TO [...] name>: POINTER TO [...] Number: POINTER TO INT; i

一个段内的位偏移量 DWORD . 重要 偏移 [...] 的最高值半字节（4 位） DWORD 定义 [...] Bitoffset : DWORD; END_VAR dw

, BYTE , WORD , DWORD

| BYTE | DATE | DATE_AND_TIME | DINT | DT | DWORD

| ULINT | BYTE | WORD | DWORD | LWORD 如果 [...] | LINT | ULINT | BYTE

name> : DWORD | LWORD | POINTER TO [...] Address1: POINTER TO INT; i

A_3 : DWORD; END_STRUCT END [...] ) TO UPPER_BOUND(ai

_DT BYTE_TO_DWORD BYTE_TO [...] _BOOL DWORD_TO_BYTE DWORD_TO [...] _BOOL __UXINT_TO_BYTE __UXINT_TO

_BOOL DATE_TO_BYTE DATE_TO_DINT DATE_TO_DT DATE_TO_DWORD [...] _BIT DT_TO_BOOL DT_TO_BYTE

_BIT BOOL_TO_BYTE BOOL_TO [...] _DT BOOL_TO_DWORD BOOL_TO [...] ); bReturn_6 := BOOL_TO_BYTE