HMS Industrial Networks Anybus BACnet to Modbus Gateway Installation Guide

HALMSTAD • CHICAGO • KARLSRUHE • TOKYO • BEIJING • MILANO • MULHOUSE • COVENTRY • PUNE • COPENHAGEN

HMS Industrial Networks
Mailing address: Box 4126, 300 04 Halmstad, Sweden
Visiting address: Stationsgatan 37, Halmstad, Sweden

Connecting Devices

TM

E-mail: [e-mail]

www.anybus.com

Installation Guide

Anybus BACnet to Modbus

Gateway

Doc. SP1820

Rev. 1.00

3

Important User Information

This document provides installation instructions and other relevant information applicable to the
Anybus BACnet to Modbus Gateway.

Liability

Every care has been taken in the preparation of this document. Please inform HMS Industrial Net­works AB of any inaccuracies or omissions. The data and illustrations found in this document are
not binding. We, HMS Industrial Networks AB, reserve the right to modify our products in line
with our policy of continuous product development. The information in this document is subject
to change without notice and should not be considered as a commitment by HMS Industrial Net­works AB. HMS Industrial Networks AB assumes no responsibility for any errors that may appear
in this document.

There are many applications of this product. Those responsible for the use of this product must
ensure that all the necessary steps have been taken to verify that the applications meet all perfor­mance and safety requirements, including any applicable laws, regulations, codes or standards.

HMS Industrial Networks AB will, under no circumstances, assume liability or responsibility for
any problems that may arise as a result from the use of undocumented features, timing, or func­tional side effects found outside the documented scope of this 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.

The examples and illustrations in this document are included solely for illustrative purposes. Be­cause of the many variables and requirements associated with any particular implementation, HMS
Industrial Networks AB cannot assume responsibility for actual use based on these examples and
illustrations.

Trademark Acknowledgements

Anybus ® is a registered trademark of HMS Industrial Networks AB. All other trademarks are the
property of their respective holders.

Specifications are subject to change without notice. Other product names may be trademarks or
registered trademarks of their respective companies. BACnet is a registered trademark of the
American Society of Heating, Refrigeration, and Air-Conditioning Engineers, Inc. (ASHRAE).

Declaration of Conformity

Information about regulatory compliance can be found at: www.anybus.com

Anybus BACnet to Modbus Gateway Install Guide

Copyright© HMS Industrial Networks AB, September 2014

Anybus BACnet to Modbus Gateway Install Guide Doc. SP1820, Rev. 1.00

Anybus BACnet to Modbus Gateway Install Guide Doc. SP1820, Rev. 1.00

Table of Contents 5

Table of Contents

Important User Information . . . . . . . . . . . . . . . . . . . . . . . 3

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Shipping Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Ethernet Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RS-485 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RS-485 Bias and Termination Jumpers (J5) . . . . . . . . . . . . . . . . . . . . . . . . . 11

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Limited Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Hardware & Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Modbus Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

RS-485 Bias and Termination

Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Further Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Anybus BACnet to Modbus Gateway Install Guide Doc. SP1820, Rev. 1.00

6

1. Overview

Modbus is a popular network interface commonly used with boiler controllers,
variable speed drives, and metering applications, although many of these
devices have no BACnet compliance. The Anybus BACnet to Modbus Gate­way is used to make Modbus devices appear as individual BACnet devices.

The gateway has one 10/100 Mbps Modbus TCP or BACnet/IP Ethernet
port, and one opto-isolated Modbus RS-485 serial port for Modbus RTU or
Modbus ASCII devices.

Up to 30 Modbus serial devices can share the unit’s Modbus port, and up to
1000 Modbus registers can be processed. The virtual routing feature in the
Anybus BACnet to Modbus gateway allows each connected Modbus device to
appear as an individual BACnet-compliant device.

A device profile is required for each Modbus device type. Common device pro­files are available from www.anybus.com. Device profiles can be customized.

Using web pages and a database of common Modbus device profiles, Modbus
registers from Modbus Serial devices can be mapped to BACnet objects.

The Anybus BACnet to Modbus Gateway provides:

Gateway functionality between

• Modbus Serial (RTU or ASCII) and BACnet/IP

• Modbus TCP and BACnet/IP

Routing functionality between:

• Modbus Serial (RTU and ASCII) and Modbus TCP

Flexible communication ports:

• 10/100 Mbps Ethernet with auto-negotiation and Auto-MDIX

• Opto-isolated serial port supports either 2-wire or 3-wire RS-485

• Baud rates at 2.4–115.2 kbps

Convenient Installation

• 24 VAC/VDC powered

•DIN-rail mounting

Anybus BACnet to Modbus Gateway Install Guide Doc. SP1820, Rev. 1.00