LXM32M

Table of contents

 

 

Table of contents

0198441113843, V1.01, 01.2012

Important information

Table of contents

About this manual

Further reading

1Introduction

2Before you begin - safety information

2.1Qualification of personnel

2.2Intended use

2.3Hazard categories

2.4Basic information

2.5Standards and terminology

3Basics

3.1Modbus TCP technology

3.1.1Function principle

3.1.2Bus topology

3.1.3Client / server model

3.1.4Network service SNMP

3.2Modbus TCP protocol

3.2.1MBAP header

3.3Modbus TCP communication

3.3.1Connection management

3.3.2Modbus response to a Modbus request

3.3.3Reading and writing parameters

3.3.4I/O scanning to "Drive Profile Lexium"

3.3.4.1I/O scanning Output

3.3.4.2I/O scanning Input

3.3.4.3Parameter channel

3.4Modbus services - "Function Code"

3.4.1"Function Code" 3 (Read Multiple Registers)

3.4.2"Function Code" 8 (Diagnostics)

3.4.3"Function Code" 16 (Write Multiple Registers)

3.4.4"Function Code" 23 (ReadWrite Multiple Registers)

3.4.5"Function Code" 43 (Encapsulated Interface Transport)

3.4.6Examples

3.4.6.1Example of "Function Code" 3

3.4.6.2Example of "Function Code" 16

4Installation

2

3

7

8

9

11

11

11

12

13

14

15

15

15

15

16

16

17

18

19

19

20

21

22

23

24

26

28

28

29

30

31

32

33

33

33

35

Modbus-TCP module

3

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Schneider Electric LXM32M manual Table of contents