In dealing with the communication between host computer and CNC system in FMS, EIA RS-232C serial interface and HDLC data link are used.
本文讨论用EIARS- 232c串行接口作为通讯线路，并选用国际链路层通讯协议HDLC进行FMS中主机与CNC系统的通讯。
Each communication carries the address of the source and destination networks and the particular machine within the network associated with the user or host computer at each end.
每个通信携带源地址和目的地址的网络和与用户相关的特定的机器在网络或主机两端。
The procedure storage unit is a storage unit comprising a processing control procedure and a communication procedure which is used for interchanging data with the host computer.
程序存储单元为存有加工控制程序和与上位计算机交换数据的通讯程序的存储单元。
The procedure storage unit is a storage unit comprising a processing control procedure and a communication procedure which is used for interchanging data with the host computer.
程序存储单元为存有加工控制程序和与上位计算机交换数据的通讯程序的存储单元。
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