Transcription of MODBUS APPLICATION PROTOCOL SPECIFICATION V1
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April 26, 2012 1/50 MODBUS APPLICATION PROTOCOL SPECIFICATION CONTENTS 1 Introduction .. 2 Scope of this document .. 2 2 Abbreviations .. 2 3 Context .. 3 4 General description .. 3 PROTOCOL description .. 3 Data Encoding .. 5 MODBUS Data model .. 6 MODBUS Addressing model .. 7 Define MODBUS Transaction .. 8 5 Function Code Categories .. 10 Public Function Code Definition .. 11 6 Function codes descriptions .. 11 01 (0x01) Read Coils .. 11 02 (0x02) Read Discrete Inputs .. 12 03 (0x03) Read Holding Registers .. 15 04 (0x04) Read Input Registers.
MODBUS Application Protocol Specification V1.1b3 Modbus April 26, 2012 http://www.modbus.org 2/50 1 Introduction 1.1 Scope of this document
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IP for 8-Bit Architectures, Datasheet: Brocade 6520 Fibre Channel switch, Fujitsu, Datasheet Brocade 6520 Fibre Channel switch, SURPASS hiT 7300 Next-Generation Multi-Haul DWDM, SURPASS hiT 7300 Next-Generation Multi-Haul DWDM Platform, MODBUS Application Protocol Specification, 6LoWPAN, Chapter 11: File System Implementation