Anybus Modbus to BACnet Gateway User manual

Modbus to BACnet Gateway
USER MANUAL
SCM-1202-049 1.0 ENGLISH

Important User Information
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 commit-
ment 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 device must ensure that all the
necessary steps have been taken to verify that the applications meet all performance and safety requirements in-
cluding any applicable laws, regulations, codes, and 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 as-
sume responsibility for actual use based on these examples and illustrations.
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HMS Industrial Networks AB has intellectual property rights relating to technology embodied in the product de-
scribed in this document. These intellectual property rights may include patents and pending patent applications in
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Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Modbus to BACnet Gateway User Manual SCM-1202-049 1.0
Table of Contents Page
1 Preface ............................................................................................................................... 3
1.1 About This Document.....................................................................................................3
1.2 Document history...........................................................................................................3
1.3 Document Conventions ..................................................................................................4
2 Safety Instructions.......................................................................................................... 5
3 Product Description ....................................................................................................... 6
3.1 General.........................................................................................................................6
3.2 Operation ......................................................................................................................6
4 Installation ........................................................................................................................ 7
4.1 Overview.......................................................................................................................7
4.2 Mechanical Installation .................................................................................................10
4.3 Connecting the BACnet interface .................................................................................. 11
4.4 Connecting the Modbus interface .................................................................................. 11
4.5 Connecting the Power Supply .......................................................................................12
4.6 Configuration Connections ...........................................................................................12
5 Anybus Configuration Manager (MAPS) ................................................................. 13
5.1 Installation...................................................................................................................13
5.2 Connection Tab............................................................................................................14
5.3 Configuration Tab.........................................................................................................16
5.4 Signals Tab .................................................................................................................31
5.5 Receive/Send Tab........................................................................................................34
5.6 Diagnostic Tab.............................................................................................................35
A BACnet Interoperability Building Blocks................................................................ 39
B BACnet Service Types ................................................................................................. 42
C BACnet Objects ............................................................................................................. 43
D BACnet PICS .................................................................................................................. 54
E Technical Data................................................................................................................ 55

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Preface 3 (56)
1 Preface
1.1 About This Document
This document describes how to configure and use the Modbus to BACnet Gateway.
The instructions in this document require a basic knowledge of BACnet and Modbus technolo-
gies and terminology.
For additional related documentation and file downloads, please visit www.anybus.com/support.
1.2 Document history
Version Date Description
1.00 2017-06-15 First release
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Preface 4 (56)
1.3 Document Conventions
Ordered lists are used for instructions that must be carried out in sequence:
1. First do this
2. Then do this
Unordered (bulleted) lists are used for:
• Itemized information
• Instructions that can be carried out in any order
...and for action-result type instructions:
► This action...
➨leads to this result
Bold typeface indicates interactive parts such as connectors and switches on the hardware, or
menus and buttons in a graphical user interface.
Monospaced text is used to indicate program code and other
kinds of data input/output such as configuration scripts.
This is a cross-reference within this document: Document Conventions, p. 4
This is an external link (URL): www.hms-networks.com
This is additional information which may facilitate installation and/or operation.
This instruction must be followed to avoid a risk of reduced functionality and/or
damage to the equipment, or to avoid a network security risk.
Caution
This instruction must be followed to avoid a risk of personal injury.
WARNING
This instruction must be followed to avoid a risk of death or serious injury.
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Safety Instructions 5 (56)
2 Safety Instructions
This product contains parts that can be damaged by electrostatic discharge (ESD).
Use ESD protective measures to avoid equipment damage.
Connecting power with reverse polarity or using the wrong type of power supply
may damage the equipment. Make sure that the power supply is correctly
connected and of the recommended type.
The Modbus to BACnet Gateway should only be installed by adequately trained personnel and
according to applicable safety regulations.
The unit should be mounted on a standard DIN rail or screw-mounted onto a flat surface inside
a properly grounded metallic enclosure. The unit should not be mounted outdoors or exposed
to direct sunlight, water, high humidity or dust.
Make sure that you have all the necessary information about the capabilities and restrictions of
your local network environment before installation.
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Product Description 6 (56)
3 Product Description
3.1 General
The Anybus Modbus to BACnet Gateway is intended for integration of Modbus RTU and Mod-
bus TCP installations into BACnet MSTP or BACnet IP enabled monitoring and control systems.
The gateway acts as a BACnet/IP Server or BACnet MSTP device, allowing other BACnet devi-
ces to perform subscription (COV) requests and reads/writes to its internal points.
On the Modbus side the gateway emulates a Modbus RTU Master device and/or a Modbus
TCP Client device. The Modbus slave device(s) are read by the gateway using automatic con-
tinuous polling.
Configuration is carried out using Anybus Configuration Manager (MAPS) which can be down-
loaded from www.anybus.com/support..
3.2 Operation
After the startup process has completed, the gateway will continuously read data points from
the connected Modbus TCP Server and/or Modbus RTU Slave devices and update these val-
ues in its memory.
On the BACnet side, the gateway will listen for any subscription (COV) request, serve any poll-
ing request, and/or perform any writing request of the internal points received from the BACnet
system. The values received from BACnet are immediately written in the associated register of
the corresponding Modbus TCP Server or Modbus RTU Slave device.
From the BACnet point of view, the whole Modbus system is seen as a single BACnet device
containing multiple objects. Every register in the Modbus slave devices will be associated with a
specific BACnet object. When a new value is read from Modbus for a given register, the corre-
sponding value will be updated in the memory of the gateway. If this signal is associated with an
active BACnet subscription, the new value will also be sent to the subscribing BACnet device(s).
If a device is not responding during the continuous polling of Modbus devices, a virtual signal in-
side the gateway will be activated indicating a communication error with the device. These vir-
tual signals indicating real-time communication status are accessible from BACnet in the same
way as other data points.
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Installation 7 (56)
4 Installation
4.1 Overview
Port B
USB
EIA 232 B1 B2 B3
SW B
SW A Ethernet
Port A
A1 A2 A3 A4
Power
- +
Run / Error
Eth Link/Spd
Port A TX/RX
Port B TX/RX
Button A
Button B
Console
Fig. 1 Front panel
Read the Safety Instructions before starting installation.
Installation Procedure
These are the main steps when installing and setting up the Modbus to BACnet Gateway. Each
step will be described in the following sections of this document.
1. Mount the gateway on a DIN rail or using the screw mounting clips.
2. Connect the BACnet and Modbus serial and/or Ethernet interfaces.
3. Connect a computer for configuration to the Console USB port or to the Ethernet network.
4. Connect the power supply and power on the unit.
5. Configure the unit using Anybus Configuration Manager (MAPS).
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0

Installation 8 (56)
Connectors
See Technical Data, p. 55 regarding terminal wiring and power supply requirements.
Power Connector (3-pole terminal block)
Pin Function
-+
Protective Earth
-Power Ground
+24 VAC or +9 to +36 VDC
Port A / Modbus RTU EIA-485 (2 x 2-pole terminal blocks)
Pin Function
A1 A2 A3 A4
A1, A2 Signal Ground
A3 EIA-485 Line A (+)
A4 EIA-485 Line B (-)
Port B / BACnet MSTP (3-pole terminal block)
Pin Function
B1 B2 B3
B1 EIA-485 Line B (-)
B2 EIA-485 Line A (+)
B3 Signal Ground
Ethernet Port (RJ-45)
Pin Function
1 8
1 TD+
2 TD-
3 RD+
6 RD-
4, 5, 7, 8 (reserved)
USB Port (USB Type A)
Can be used to connect a USB flash storage device for storing logfiles.
HDD drives are not supported (max. 150 mA load).
Console Port (USB Type Mini-B)
Used to connect the gateway to a computer for configuration.
Modbus to BACnet Gateway User Manual SCM-1202-049 1.0