Design of Waterlogging Alarm and Centralized Monitoring System Based on PLC
Kai Chen · Measurement & Control Technology · 2013
The waterlogging alarm and centralized monitoring system which consists of PC and S7-200 PLC is introduced.Under free port communication mode,PLC serial communication program is designed.By using Windows API functions and classes in Delphi,communication program and monitoring interface are designed. Monitoring the waterlogging alarm information in real time is realized.The system can run correctly by testing and practical work.