摘要
PLC通常与上位机之间的通信物理层标准一般都采用RS-232或RS-485串行接口,比特率和通讯距离有严格的限制,难以满足通信距离远、数据量大,实时性要求高的控制系统。采用工业以太网通信协议能够更实时有效的实现数据传输和响应,本文主要介绍了欧姆龙NJ301可编程控制器与上位机之间的EtherNet/IP(简称EIP)网络构建及通信测试。
Regular communication between PLC and PC are generally used USB to serial, RS-232 or RS-485 serial mode, the output rate is relatively slow, and unable to meet the communication distance, large amount of data, real-time control systems that require high .The EIP communication protocol can achieve transfer and response of the data more effectively, this article mainly introduces the EIP network building and communication testing between Omron NJ301 programmable controller and PC.
