部分的第一行包含以下声明： FUNCTION_BLOCK <access specifier> <function [...] <function block

| FUNCTION_BLOCK | METHOD [...] 声明部分 PRG , FUNCTION_BLOCK [...] 远程直接读取或写入 <function block instance

能将它们用作标识符： ACTION END_ACTION END_FUNCTION END_FUNCTION_BLOCK [...] 有效关键字： VAR_ACCESS READ

块实例的名称（ FUNCTION_BLOCK ）或程 [...] FUNCTION_BLOCK FB [...] access Control

FUNCTION_BLOCK FB [...] access in an integer [...] _VAR // Symbolic bit access to

> : <function block> | <data [...] _dynamic_creation'} FUNCTION_BLOCK FBCompute [...] array by index access

任何 {attribute 'io_function_block'} {attribute 'io_function_block [...] function blocks> '} 没有

<access specifier [...] > <access specifier> 选修 [...] 能块 ( FUNCTION_BLOCK ) 被选

_TYPE 位访问 FUNCTION_BLOCK [...] access Control