; END_VAR FUNCTION_BLOCK FB EXTENDS FB2 VAR [...] _VAR FUNCTION_BLOCK FB2 VAR i

_VAR FUNCTION_BLOCK FB EXTENDS POU VAR END_VAR FUNCTION POU VAR END

分配功能块实例才分配初始化值。 语法：功能块声明 FUNCTION_BLOCK <function block name> VAR [...] > : <function block name

_VAR FUNCTION_BLOCK FB EXTENDS FB VAR END

块变量。 FUNCTION_BLOCK fbA VAR [...] ; FUNCTION_BLOCK fb [...] ; // The function block

_VAR FUNCTION_BLOCK XY METHOD [...] _VAR FUNCTION_BLOCK XY2 EXTENDS XY METHOD METH

_VAR FUNCTION_BLOCK XY METHOD [...] _VAR FUNCTION_BLOCK XY2 EXTENDS XY METHOD METH

'io_function_block [...] 'io_function_block [...] 在树或库块中选择的库的可用文档 有关更多信息，请参阅： io_function_block

指针 FUNCTION_BLOCK [...] _DoAlso := TRUE; FUNCTION_BLOCK FB_1 EXTENDS FB

_METHOD FUNCTION_BLOCK FB [...] 1 := TRUE; END_METHOD END_FUNCTION_BLOCK FUNCTION_BLOCK FB