摘要
介绍了在计算机＋PLC＋变频器的控制模式下，如何利用MODBUS协议和自由通信协议实现计算机与PLC、PLC与变频器的通信；开发了计算机与PLC和PLC与变频器之间的通信控制程序。
At the control mode of PC＋PLC＋frequency converter,a method of how to realize the communication use the MODBUS communication protocol between PC and PLC,and use the free communication protocol between PLC and frequency converter. The communication control program of PC,PLC and frequency converter is empoldered.
出处
《机电一体化》
2009年第3期53-54,57,共3页
Mechatronics
关键词
串行通信
通信协议
通信控制程序
serial communication
communication protocol
communication control program
