这是一个不错的方法，非常感谢。
另外，使用SCOUT4.3对D45的应用LAD编程时，编辑后出现如下提示：
Information: START of the compilation of 'MAIN' at 08:05:25
Information: DATA(163): Statements starting on line "882" do not have an assignment; code is not completely generated
Information: DATA(211): Statements starting on line "931" do not have an assignment; code is not completely generated
Information: RESET(45): Statements starting on line "1766" do not have an assignment; code is not completely generated
Information: END of the compilation of 'MAIN' at 08:05:27
Information: Compilation of 'MAIN': 0 error(s), 0 warning(s)
其中DATA、RESET为子程序名称，（163）（211）（45）这几个地方的语句检查没有什么问题，为什么会出现未定义提示？这属不属于错误？
请给指点一下。