2006•Unpublished venueRequires access

Field-bus communication protocol of JBus/MODBus based on RS485

Tang Chang-Jian

Abstract

This paper presented a way to carry out the communication between a PC(master) and an instrument(slave) using MODbus/Jbus based on RS485 in the FCS(Field-bus control system).The communication based on the master-slave principle and the transfer mode of Remote Terminal Unit(RTU).By reading or writing the appropriate memory unit in the slave's EEPROM,it can obtain or change the parameters.So it can carry out the real time control of the instrument in automation control system in industry.Also the feasibility and reliability of the protocol is validated by experiment of communicating with the compact microprocessor controller dTRON04.1.

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Available abstract

Key concepts: Modbus, Embedded system, EEPROM, Protocol (science), Reliability (semiconductor), Microprocessor, CAN bus, Computer hardware