摘要
本文介绍了Modbus RTU通信协议在变频调速系统中的应用,采用基于RS485接口的Modbus RTU通信协议,实现PLC和各变频器之间的串行通讯,通过变频器对交流电机进行变频调速。结果表明,该方法极大地减少线路连接的复杂性,提高了系统的抗干扰能力。
This paper introduces the application of Modbus RTU Protocol in variable frequency speed regulation system.The serial communication between PLC and frequency-converters is realized based on the Modbus RTU protocol of the RS485 interface and makes variable-frequency speed regulation control for AC motor.The experiment results showed that this control mothod greatly reduced the complexity of the circuit conjunction and improved the performance of disturbance rejection of the system.
出处
《微计算机信息》
北大核心
2008年第31期6-7,3,共3页
Control & Automation
基金
粤港关键领域重点突破项目(2004A10403023
2006Z013)
