variable iNumber2 by [...] 数据类型 STRING 或者 WSTRING . 指针 [...] Data + i)^; 索引访问 STRING

); (* Constant string variable [...] VAR_IN_OUT variable [...] _IN_OUT <variable name> : <data

: STRING; END_VAR // access to global variable _3

<access specifier [...] > <access specifier> 选修 [...] _IN_OUT <variable declaration

_connected' := ' <input variable> '} 没有 [...] ' := 'variable'} {attribute [...] ' := '<access possibilities