摘要
S7—200系列PLC可方便地实现相互之间通信以及与其它智能设备进行通信。本文介绍了由S7—200 PLC组建的集中典型网络的通信协议和硬件连接设置。S7—200可支持多种通信协议,如点到点接口(PPI)、多点接口(MPI)和PROFIBUS—DP协议。这些协议的结构是基于7层开放系统互联参考模型(OSI),通过一个令牌环网来实现。
The PLC in S7-200 Series can easily realize mutual communication and communication with other intelligent equipments.This paper introduces the communication protocols and hardware connection and configuration of the centralized typical network built by S7-200 PLC.S7-200 can support many kinds of communication protocols,the structure of which is realized by a token ring network on the basis of the 7-layer OSI model.
出处
《天津职业院校联合学报》
2011年第2期75-77,共3页
Journal of Tianjin Vocational Institutes
