其次对现场设备，人们要求它具有相应的通信能力，即要求它具有工业以太网的智能通讯接口。
Secondly people want field equipments have intelligent communication interface , that is , equipments must have the corresponding ability of communication with each other.
作者利用通信接口rs485设计编制了一套通讯软件，给出了主程序流程图。
The author designs a software of communication based on the communication interface RS485, and shows the flow chart of the main program.
IASB协议、接口、通讯程序设计、以及串口通信编程。
It involved IASB protocol, interface, the design of the communication program, the communication programming of the serial port.
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