摘要
为了完成基于Modbus协议的可编程控制器与LabVIEW的通讯,利用LabVIEW中的VISA技术,设计实现了Modbus协议下PC机与台达DVP14SS PLC的串行通讯。PC机通过串口对PLC进行控制,并将PLC采集到的状态信息送回PC机进行处理,完成状态监测。实验结果表明,该系统具有良好的实时性和可靠性。
To fulfill a way of communication between PLC and LabVIEW based on Modbus Protocol, realization of serial communication between PC and Delta DVP14SS PLC under Modbus Protocol is developed by the use of VISA technology. PC controls PLC through serial port. It can process the state information collected by PLC, then complete state monitoring. Experiment results show that the system has good real-time quality and reliability.
出处
《中国测试技术》
CAS
2008年第3期62-64,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
