基于PLC的串口通信技术对溴化锂制冷机组远程监控

Romote Monitoring of Based on Serial Communication of PLC

论述了利用PLC的串口通信技术,实现上位机对溴化锂制冷机组的远程实时监控。文中还对OMRON公司的C200H型PLC的通信协议进行了分析,并介绍了基于VC++的上位机通信程序设计思想。

This paper presents the realization of a successful remote supervisory on a BrLi chiller,by means of RS-232 between PLC and Computer.The communication agreement of the style C200H of OMRON is analysed,and the method of VC++ program design is also introduced.