Development of Inspect System for Reducer Based on Communication Protocol

MODBUS protocol is becoming the standard of meter and intelligent terminal,because it is supported by many meter manufacturers.It adopted AT89C55WD as the core to design the system for monitoring the temperature and height of the oil,plus the pressure and the flow quantity of the cooling water;adopted the MODBUS protocol to design the communication program of the system.The interface chip of communication was MAX485.The flow chart of the communication program and some program based on MODBUS protocol was provided.