Monitor System of Low-Voltage Power Distribution Based on MODBUS Communication Protocol

摘要

This paper introduces the monitor system of lowvoltage power distribution based on MODBUS communication protocol. The system adopts masterslave structure. Slave stations which are used to collect data and control are made of many PLCs and intelligent electric power monitoring instruments. Master station communicates with the slave stations by RS485 line of communication based on MODBUS communication protocol and manages data.