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CS Instruments DS 400 - User Manual

CS Instruments DS 400
36 pages
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DS 400 Side 1 of 36
EN - English
Modbus Installation and operating instructions
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DS 400
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CS Instruments DS 400 Specifications

General IconGeneral
BrandCS Instruments
ModelDS 400
CategoryMeasuring Instruments
LanguageEnglish

Summary

Foreword

Safety Instructions

Instructions

Definitions and Abbreviations

Defines key terms and abbreviations used in the manual, including MODBUS protocol specifics.

References

Lists technical specifications and guides related to MODBUS protocols used in the document.

Technical Data DS 400

DS400 MODBUS RTU Specification

Details technical parameters for the DS400's Modbus RTU interface, including baud rates and electrical interface.

DS400 MODBUS;TCP Specification

Outlines technical specifications for the DS400's Modbus TCP interface, covering Ethernet and IP settings.

General Modbus Information

Explains fundamental Modbus concepts like master-slave architecture and mono-master system.

Installation

RS485 Bus Wiring (Modbus RTU)

Provides connection diagram and cable specifications for RS485 bus wiring for Modbus RTU.

Ethernet Connection for Modbus;TCP

Describes the requirements for connecting the DS400 to a network using an Ethernet cable.

Modbus RTU Communication Settings

Accessing and Changing Modbus Settings

Guides on how to access and modify Modbus RTU communication parameters, protected by a password.

Modbus TCP Communication Settings

Modbus Addressing Model

Function Code 3 (Read Holding Register)

Explains Modbus Function Code 3 for reading holding registers and associated exceptions.

Function Code 16 (Write Multiple Registers)

Details Modbus Function Code 16 for writing multiple registers and its exceptions.

Modbus Holding Register

Basic Values Register

Lists basic Modbus registers for serial number, hostname, hardware version, and calibration date.

Values Register

Defines Modbus registers for reading channel values (A1-A2, B1-B2, V1-V4), covering multiple data points per channel.

Status Register

Details Modbus registers for channel status, covering values 1-4 and 5-8 for different channels.

Channel Description

Lists Modbus registers for channel sensor types and names, and value/unit descriptions.

Alarm Settings

Describes Modbus registers related to alarm settings, including warning and alarm values and hysteresis.

Value Extended

Lists extended Modbus registers for channel value names (long/short), resolution, and future use.

Data Format Test

Provides Modbus registers for testing data formats, specifically for Dword and float types.

Data Bit Description

Explains the bit structure within data values and status fields for Modbus communication.

User Units

Lists Modbus registers for defining and assigning user-defined unit names for measurements.

Appendix

APPENDIX A - Exception Codes

Lists and explains Modbus exception codes used by the DS400 when responding to master requests.

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