2012•Journal of Guangdong Industry Technical CollegeRequires access

Bus Communication and Achieve of the Small PLC ModBus Based on RS485

Fan Yang

Abstract

ModBus is increasing to choose by small PLC manufacturers as an open communication protocol,and becoming to one of the standard configuration of the product.Firstly the paper introduces bus communication technology of inovance H2U series PLC ModBus,and then achieves hardware connection、inverters parameter settings and PLC communication program of the H2U PLC and MD320 inverter ModBus bus communication.Practical application shows that the program works easily and cost-effectivly.

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Available abstract

Key concepts: Modbus, Embedded system, Engineering, Protocol (science), Communications protocol, Computer science, Computer network, Medicine