Control System in Second Supply Water Based on MODBUS Communication Protocol

摘要

This paper has mainly introduced a kind of intellectual monitoring system of running water based on MODBUS protocol: As the master station with Industrial control computer, the electricity transducer with interface of the protocol and PLC device to be the slave station, using MODBUS protocol is to realize the data transmission between the computer and the electricity transducer, it is introduced the design principle and scheme of the intellectual dispatcher from second pump house at the same time , and the concrete function that the software realizes. Have probed into the application of MODBUS communication protocol in Delphi6.0 environment deeply, the programmable controller controlling frequency converter can realize constant voltage automatic control of water supply system.