MODBUS Protocol Converter Which Used in 220KV Main Transformer's Air-Cooled Control

摘要

A kind of design which is about MODBUS protocol converter has been introduced in this paper.We mainly used P89C669 Microcontroller to realize the data conversion between the main control equipment of MODBUS Net and Remote Terminal Unit (RTU).And eventually,we have used this kind of protocol converter to communicate between PLC and MODBUS Net which used to monitor computer system automatically.The whole system is used in 220KV main transformer's air-cooled control of Electric Power system.