The communication program is realized in Visual Basic. The exchanging of information from process computer to industry control computer is realized by DDE (Dynamic Data Exchange).

• 采用Visual Basic编制通信软件，实现本系统工控机从过程机读取热轧生产流程中钢卷的物流信息数据，并通过DDE(动态数据交换)方式完成与组态软件的数据交换。