Implementation of RS-485 Communication between PLC and PC of Distributed Control System Based on VB

3rd International Conference on Manufacturing, Optimization, Industrial and Material Engineering

Zhang, Chuan Lian^1 ; Da Huang, Zhi^2 ; Zhou, Gui Qing^2 ; Chong, Kil To^1,3

Chonbuk National University, Jeonju, Korea, Republic of^1

Huaihai Institute of Technology, Lianyungang, China^2

Advanced Electronics and Information Research Centre, CBNU, Jeonju, Korea, Republic of^3

关键词: Automatic production line;    Data input;    Main station;    Mitsubishi;    On-line parameter;    Programmable logical controller (PLC);    Robust performance;    Visual Basic 6.0;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/83/1/012017/pdf
DOI  :  10.1088/1757-899X/83/1/012017

来源: IOP

【 摘 要 】

This paper focuses on achieving RS-485 communication between programmable logical controller (PLC) and PC based on visual basic 6.0 (VB6.0) on an experimental automatic production line. Mitsubishi FX2NPLCs and a PC are chosen as slave stations and main station, respectively. Monitoring software is developed using VB6.0 for data input/output, flow control and online parameters setting. As a result, all functions are fulfilled with robust performance. It is concluded from results that one PC can monitor several PLCs using RS-485 communication.