MODBUS协议是MODICON公司推出的一个开放式通信协议，广泛运用于工业控制领域。
MODBUS protocol is opening communication protocol provided by MODICON and widely used in the industrial control region.
文章提出一种基于开放系统互联模型的串行通信协议结构，讨论了各层协议的功能和实现方法。
This paper presents a serial communication protocol structure based on open system interconnection reference model. The function and realization method of every layer is discussed.
基于IEEE 802.15.4标准的一个解决方案是ZigBee，一个国际公认的开放式通信协议。
One solution based on the IEEE 802.15.4 standard is ZigBee - an internationally recognized open protocol.
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