西门子PLC“事务型”信息的通信

Communication of Siemens PLC"Transaction type"Information

西门子PLC默认的通信模式适合于设备控制信息的交换,对于设备之间需要传递的“事务型”信息的通信直接采用自带机制存在一些难以克服的缺点,因此需要在西门子PLC之间的基本通信方式基础上设计一个高层协议传递此类信息,同时解决接口与数据耦合以及接口驱动PLC中过程的问题。

The communication mode of Siemens PLC is suitable for the exchange of control information of equipment,and there are some difficulties to be overcome in the direct communication of"transaction"information between equipment,therefore,it is necessary to design a high-level protocol to transfer this kind of information based on the basic communication mode between Siemens PLC,and solve the problems of interface and data coupling and interface driving the process in PLC。