一个通用的串行通讯传输协议

通过对ISO定义与OSI模型的各个不同层面的讨论，指出具体定义的内容和方法，实现自动数据采系统间或自动采集系统与上位数据机间数据交换，由于采用模块化，结构化设计思路，使这个协议易于实现并具有很妇的可扩充性，实现了数据传输过程由纵向传输到横向模型的转变，便于通讯程序的维护。

A Popular Transmitting Protocol of Serial Communication

Based on the discussion of each lay of OSI modal defined by ISO, the contents and way defined specifically are introduced. Thereby dada transmission can be achieved among automatic data collectors or between automatic data collector and upper data managing system. By using module and structure design idea, the protocol is liable to be achieved and has good extensibility. Therefore the way of data transmission can be changed from portrait to landscape orientation, which is convenient to maintain the communication program.