基于 Modbus 协议的通讯集成技术

摘要

重点研究了基于Modbus协议下的S7－200PLC与多台恒压供水控制器、组态软件与触摸屏之间的通讯。实际的工业应用效果表明：基于Modbus协议的异构系统通讯集成方案能够很好地解决工程中大量的第三方通讯问题。%This paper mainly researches the communications based on protocol Modbus ,among S7 -200PLC ,constant-pressure water-supply controllers , configuration software and touch screen . The actual industrial application results show that the communication integration program based on Modbus protocol for heterogeneous systems can solve lots of communication problems caused by the third party communication .