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MODBUS MESSAGING ON TCP/IP IMPLEMENTATION GUIDE …

MODBUS MESSAGING on TCP/IP IMPLEMENTATION GUIDE MODBUS Organization October 24, 2006 MESSAGING ON TCP/IP IMPLEMENTATION GUIDE CONTENTS 1 INTRODUCTION .. 2 OBJECTIVES .. 2 CLIENT / SERVER 2 REFERENCE DOCUMENTS .. 3 2 ABBREVIATIONS .. 3 3 CONTEXT .. 3 PROTOCOL DESCRIPTION .. 3 General communication architecture .. 3 MODBUS On TCP/IP Application Data Unit .. 4 MBAP Header description .. 5 MODBUS FUNCTIONS CODES DESCRIPTION .. 6 4 FUNCTIONAL 7 MODBUS COMPONENT ARCHITECTURE 7 TCP CONNECTION MANAGEMENT.

MODBUS Messaging on TCP/IP Implementation Guide V1.0b . 1 INTRODUCTION . 1.1 OBJECTIVES . The objective of this document is to present the MODBUS messaging service over TCP/IP , in order to provide reference information that helps software developers to implement this service. The encoding of the MODBUS function codes is not described

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