Modbus Protocol Used in Embedded Controller Based on Standard IEC
Shaojian Song
Abstract
Shaojian Song
Abstract
This paper introduces the construction of ARM control system and the Modbus Protocol,Standard IEC 61131-3 and ARM Microprocessor which are used in the controller at first.And then unifies the actual project,the paper describes the process image and that realizes the distribution of device address,function code,the data and CRC check in the environment of ADS in detail,to realize the supervision and control of ARM controller,based on Standard IEC 61131-3,in SCADA software and with MODBUS protocol.
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This paper introduces the construction of ARM control system and the Modbus Protocol,Standard IEC 61131-3 and ARM Microprocessor which are used in the controller at first.And then unifies the actual project,the paper describes the process image and that realizes the distribution of device address,function code,the data and CRC check in the environment of ADS in detail,to realize the supervision and control of ARM controller,based on Standard IEC 61131-3,in SCADA software and with MODBUS protocol.
Key concepts: Modbus, SCADA, Protocol (science), Computer science, Embedded system, Microprocessor, Controller (irrigation), Software