基于RS485接口的PLC与多台电缸通讯的实现及运用

The Implementation And Application Based On RS 485 Communication Between PLC And Multiple Servo Drive Innovative Design

利用欧姆龙CP系列PLC与SMC电缸组成的车门开关耐久试验控制系统,该系统中PLC基于RS485通讯接口,MODBUS-RTU协议与电缸控制器进行通讯,控制电缸伸出、缩回等动作,并读取电缸相关动作参数。

This paper adopt PLC and SMC servo drive to build the control system for vehicle door durability test rig. In this system,PLC communicate with servo drive through MODBUS-RTU protocol based on RS485 interface,which can control the reset,protrude,retraction of serve drive,and acquire the relevant motion parameters.