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基于Modbus/TCP协议台达PLC与上位机VB软件之间的通信
樊新乾,潘存海
(天津科技大学机械工程学院,天津,300222)
摘要:在VB(Visual Basic)编程环境下,通过调用Windows API函数,设计了整合串口通信和工业以太网通信的监控系统通信方案。并介绍了Modbus协议和Modbus/TCP协议及其通信原理,提出了应用于工业现场设备监控的设计方案,实现了上位机对现场设备的实时监控。提高了上位机监控程序的开发效率。实践证明,本监控系统性能稳定,能够满足本项目监控系统的设计要求
关键词:工业控制系统;Modbus协议;Modbus/TCP协议;;PLC;API函数
中图分类号:TP 277
munication Based on Modbus/TCP Protocol Between Delta PLC and IPC VB Program
FAN Xinqian, PAN Cunhai
(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin,300222)
Abstract: In VB (Visual Basic) programming environment,the Windows API functions were called to design the industry munication interface monitoring system. And the Modbus protocol and Modbus/TCP protocol and munications theory was also introduced in this paper, and then the application to the industrial field monitoring equipment was put forward in this last the real-time monitoring equipment was realized. The developing efficiency of the PC monitoring program was also experimental results showed that the control system had stable performance, and could satisfy the design requirements of the control system of the project
Key Words: Industrial control system;Modbus protocol;Modbus/TCP protocol;;PLC;API function
引言
在工业控制中,基于PLC控制的工程在上/下位机通讯上普遍采用RS-232/RS-通信模块进行通讯。串行通信是工业控制领域应用最为广泛的通信方式,对于数据量较大,通讯距离较远,实时性要求高的控制系统,很难满足通讯需要[1]。近年来,工业以太网越来越多的受到工业控制用户的青睐,
樊新乾,潘存海
(天津科技大学机械工程学院,天津,300222)
摘要:在VB(Visual Basic)编程环境下,通过调用Windows API函数,设计了整合串口通信和工业以太网通信的监控系统通信方案。并介绍了Modbus协议和Modbus/TCP协议及其通信原理,提出了应用于工业现场设备监控的设计方案,实现了上位机对现场设备的实时监控。提高了上位机监控程序的开发效率。实践证明,本监控系统性能稳定,能够满足本项目监控系统的设计要求
关键词:工业控制系统;Modbus协议;Modbus/TCP协议;;PLC;API函数
中图分类号:TP 277
munication Based on Modbus/TCP Protocol Between Delta PLC and IPC VB Program
FAN Xinqian, PAN Cunhai
(College of Mechanical Engineering,Tianjin University of Science&Technology,Tianjin,300222)
Abstract: In VB (Visual Basic) programming environment,the Windows API functions were called to design the industry munication interface monitoring system. And the Modbus protocol and Modbus/TCP protocol and munications theory was also introduced in this paper, and then the application to the industrial field monitoring equipment was put forward in this last the real-time monitoring equipment was realized. The developing efficiency of the PC monitoring program was also experimental results showed that the control system had stable performance, and could satisfy the design requirements of the control system of the project
Key Words: Industrial control system;Modbus protocol;Modbus/TCP protocol;;PLC;API function
引言
在工业控制中,基于PLC控制的工程在上/下位机通讯上普遍采用RS-232/RS-通信模块进行通讯。串行通信是工业控制领域应用最为广泛的通信方式,对于数据量较大,通讯距离较远,实时性要求高的控制系统,很难满足通讯需要[1]。近年来,工业以太网越来越多的受到工业控制用户的青睐,
基于ModbusTCP协议台达PLC与上位机VB软件之间的通信 来自淘豆网www.taodocs.com转载请标明出处.