HMS SG-gateway User Manual

SG-gateway

Getting Started: Modbus RTU and Modbus TCP

STARTUP GUIDE

4.02.0400.22001 1.0 en-US ENGLISH

Important User Information

Disclaimer

The information in this document is for informational purposes only. Please inform HMS Networks of any
inaccuracies or omissions found in this document. HMS Networks disclaims any responsibility or liability for any
errors that may appear in this document.

HMS Networks reserves the right to modify its products in line with its policy of continuous product development.
The information in this document shall therefore not be construed as a commitment on the part of HMS Networks
and is subject to change without notice. HMS Networks makes no commitment to update or keep current the
information in this document.

The data, examples and illustrations found in this document are included for illustrative purposes and are only
intended to help improve understanding of the functionality and handling of the product. In view of the wide range
of possible applications of the product, and because of the many variables and requirements associated with any
particular implementation, HMS Networks cannot assume responsibility or liability for actual use based on the data,
examples or illustrations included in this document nor for any damages incurred during installation of the product.
Those responsible for the use of the product must acquire sufficient knowledge in order to ensure that the product
is used correctly in their specific application and that the application meets all performance and safety requirements
including any applicable laws, regulations, codes and standards. Further, HMS Networks will under no circumstances
assume liability or responsibility for any problems that may arise as a result from the use of undocumented features
or functional side effects found outside the documented scope of the product. The effects caused by any direct or
indirect use of such aspects of the product are undefined and may include e.g. compatibility issues and stability
issues.

SG-gateway Startup Guide

4.02.0400.22001 1.0 en-US

How to Use the Getting Started 3 (10)

1 How to Use the Getting Started

This Getting Started shows how to configure an Ixxat SG-gateway for Modbus with the Ixxat
WEB-PLC. The Getting Started accompanies the tutorial video that can be found on

www.ixxat.com/energy-video.

2 Protocol Specific Restrictions

The number of devices and values that can be defined is limited.

• Client/Master: up to 128 devices in total, max. 4096 values (max. 8129 array elements)

• Server/Slave: in total max. 4096 values (max. 8129 array elements)

• TCP Server: up to 32 Modbus TCP Client connections

• RTU Master: up to 128 devices

SG-gateway Startup Guide

4.02.0400.22001 1.0 en-US