Siemens SIMATIC PN/BACnet LINK User manual

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SIMATIC
Network transitions
PN/BACnet LINK
Operating Instructions
10/2017
A5E39895543
-AA
Introduction
1
Safety instructions
2
System overview
3
Functions
4
Application planning
5
Mounting/Extending
6
Connecting
7
Commissioning
8
Configuring / Programming
9
Diagnostics
10
Maintenance and service
11
Technical specifications
12
Appendix
A

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E39895543-AA
Ⓟ
11/2017 Subject to change
Copyright © Siemens AG 2017.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

PN/BACnet LINK
4Operating Instructions, 10/2017, A5E39895543-AA
Table of contents
1 Introduction............................................................................................................................................. 7
1.1 Preface..................................................................................................................................... 7
1.2 Documentation guide ............................................................................................................... 8
2 Safety instructions................................................................................................................................... 9
2.1 Safety instructions.................................................................................................................... 9
2.2 Security information ............................................................................................................... 11
2.3 IT security............................................................................................................................... 11
3 System overview................................................................................................................................... 12
3.1 Field of application ................................................................................................................. 12
3.2 Features ................................................................................................................................. 13
3.3 System configuration ............................................................................................................. 15
3.4 System requirements ............................................................................................................. 16
3.5 Design .................................................................................................................................... 17
4 Functions.............................................................................................................................................. 18
4.1 BACnet objects ...................................................................................................................... 18
4.1.1 Overview ................................................................................................................................ 18
4.1.2 Server objects ........................................................................................................................ 21
4.1.2.1 Device object.......................................................................................................................... 22
4.1.2.2 Binary input ............................................................................................................................ 23
4.1.2.3 Binary output.......................................................................................................................... 24
4.1.2.4 Analog input ........................................................................................................................... 25
4.1.2.5 Analog output ......................................................................................................................... 26
4.1.3 Client object references ......................................................................................................... 27
4.1.4 Supported BACnet services (BIBB) ....................................................................................... 28
4.2 State model............................................................................................................................ 29
4.3 Cyclic data exchange between controller and PN/BACnet LINK........................................... 32
4.3.1 Data exchange between controller and PN/BACnet LINK..................................................... 32
4.4 Data exchange between PN/BACnet LINK and other BACnet devices................................. 36
4.4.1 Data transfer as client ............................................................................................................ 36
4.4.2 Data transfer as server .......................................................................................................... 37
4.5 Acyclic data exchange ........................................................................................................... 38
4.5.1 Acyclic reading and writing of properties of BACnet objects from the S7 user program....... 38
4.6 Monitoring functions ............................................................................................................... 42
4.7 Response to errors ................................................................................................................ 43

Table of contents
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 5
5 Application planning.............................................................................................................................. 45
5.1 Installation guidelines..............................................................................................................45
5.2 Installation location .................................................................................................................46
5.3 Transportation.........................................................................................................................49
5.4 Storage ...................................................................................................................................49
5.5 Scope of delivery ....................................................................................................................49
6 Mounting/Extending .............................................................................................................................. 50
6.1 Installing the device ................................................................................................................50
7 Connecting ........................................................................................................................................... 52
7.1 Safety instructions and guidelines ..........................................................................................52
7.2 Potential ratios ........................................................................................................................54
7.3 24 V DC power supply ............................................................................................................55
7.4 Connecting the functional ground ...........................................................................................56
7.5 Connecting PROFINET...........................................................................................................57
7.6 Connecting BACnet bus .........................................................................................................58
8 Commissioning ..................................................................................................................................... 59
8.1 Commissioning the PN/BACnet LINK.....................................................................................59
9 Configuring / Programming ................................................................................................................... 60
9.1 Overview .................................................................................................................................60
9.2 TIA Portal Devices & Networks...............................................................................................61
9.3 Configuring the BACnet/IP interface.......................................................................................62
9.4 Configuring a BACnet server ..................................................................................................63
9.5 Configure BACnet client..........................................................................................................66
9.5.1 Set client-specific parameters.................................................................................................66
9.5.2 Configuring references to BACnet devices.............................................................................68
9.5.2.1 Import EDE file........................................................................................................................69
9.5.2.2 Find BACnet device ................................................................................................................71
9.5.2.3 Creating object references manually ......................................................................................72
9.6 Checking and compiling the configuration..............................................................................75
9.7 Programming ..........................................................................................................................75
9.7.1 PLC tags .................................................................................................................................75
10 Diagnostics ........................................................................................................................................... 77
10.1 Status LEDs ............................................................................................................................77
10.1.1 Operating state of the PN/BACnet LINK / PROFINET diagnostics ........................................77
10.1.2 Connection status BACnet bus...............................................................................................79
10.1.3 Connection status of Ethernet interfaces................................................................................80
10.2 Diagnostic messages to the S7 controller ..............................................................................81
10.2.1 Events that trigger a diagnostic message...............................................................................81

Table of contents
PN/BACnet LINK
6Operating Instructions, 10/2017, A5E39895543-AA
11 Maintenance and service ...................................................................................................................... 84
11.1 Firmware update .................................................................................................................... 84
11.2 Reset to factory settings ........................................................................................................ 84
11.3 Replacing the PN/BACnet LINK............................................................................................. 85
11.4 Recycling and disposal .......................................................................................................... 85
12 Technical specifications ........................................................................................................................ 86
12.1 Technical specifications ......................................................................................................... 86
12.2 Dimension drawing ................................................................................................................ 89
A Appendix .............................................................................................................................................. 90
A.1 Certificates and approvals ..................................................................................................... 90
A.2 Contact address..................................................................................................................... 91
A.3 Licenses ................................................................................................................................. 91
A.4 Service & Support .................................................................................................................. 92
A.4.1 Technical Support .................................................................................................................. 92
A.4.2 Siemens Industry Online Support .......................................................................................... 92
A.4.3 Online catalog and ordering system ...................................................................................... 92
Glossary ............................................................................................................................................... 93
Index .................................................................................................................................................... 95

PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 7
Introduction
1
1.1
Preface
Purpose of this documentation
These operating instructions contain all the information required for configuring, installing,
commissioning and operating the PN/BACnet LINK.
These operating instructions are intended for qualified personnel in the following target
groups:
●Commissioning engineers
●Operating and service personnel
●System integrator
Knowledge required
The following knowledge is required in order to understand the operating instructions:
●Knowledge of programming a SIMATIC S7 controller
●Knowledge in the application of the TIA configuration environment
●Knowledge of working with the PROFINET fieldbus
●Sound knowledge of the BACnet/IP communication protocol
●General knowledge in the field of automation technology
●General knowledge of communication networks
Trademarks
SIMATIC®is a registered trademark of Siemens AG.
History
Edition
Remarks
10/2017 First edition

Introduction
1.2 Documentation guide
PN/BACnet LINK
8Operating Instructions, 10/2017, A5E39895543-AA
Naming conventions
The following terms are also used in this documentation instead of the full product name
"SIMATIC PN/BACnet LINK":
●"PN/BACnet LINK"
●"Device"
1.2
Documentation guide
Below you will find a list of documents which supplement these operating instructions for the
PN/BACnet LINK and which are available on the Internet.
Additional documentation
Subject
Documentation
Most important contents
Designing inter-
ference-free con-
trollers
Function Manual Designing interference-free
controllers
(https://support.industry.siemens.com/cs/ww/de/vi
ew/59193566)
•Basics
•Electromagnetic
compatibility
•Lightning protection
PROFINET SIMATIC PROFINET System Description
(https://support.industry.siemens.com/cs/ww/de/vi
ew/19292127)
•Basics
•Installation
•Functions
•Configuration examples
The latest manuals for SIMATIC products are available for download free of charge from the
Internet (https://support.industry.siemens.com/cs/ww/de/ps/man).
The information system of the TIA Portal also helps you configure and program your
automation system and the PN/BACnet LINK.

PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 9
Safety instructions
2
2.1
Safety instructions
CAUTION
Observe the safety instructions on the inside front cover of this documentation.
SIMATIC PN//BACnet LINK devices correspond to the approvals printed on the type plate. If
you have questions about whether it is permissible to install the device in the planned
environment, please contact your service representative.
NOTICE
Alterations to the devices are not permitted.
Failure to observe this requirement shall constitute a revocation of the CE approval and
manufacturer's warranty.
Intended use
NOTICE
The PN/BACnet LINK may only be used for the applications described in the catalog and in
the associated technical documentation. If the device is used in a manner other than the
one specified by Siemens, the protection offered by the device might be impaired.
See also the section "Legal notices" at the beginning of this manual.
Repairs
WARNING
The device contains no user-serviceable parts.
May cause death or serious injury
Unauthorized opening or improperly performed repairs can cause considerable damage to
property and/or danger to users. Contact Siemens Support
(http://support.automation.siemens.com) in case of error.

Safety instructions
2.1 Safety instructions
PN/BACnet LINK
10 Operating Instructions, 10/2017, A5E39895543-AA
Safety information
WARNING
Connection only over safety extra-low voltage / protective extra-low voltage
May cause death or serious injury
The device is designed for operation using directly connectable safety extra-low voltage
(SELV) with safe electrical separation according to IEC 60950-1 / EN 60950-1 /
VDE 0805-1 or IEC 61131-2 / EN 61131-2 / DIN EN 61131-2.
To maintain the safety property of the low voltage circuits of the PN/BACnet LINK, the 24 V
rated power supply as well as external connections to communication ports must be
supplied from reliable sources that meet the requirements for SELV / PELV limited voltage
sources according to different standards.
Therefore only connect safety extra-low voltages (SELV) with safe electrical separation
according to IEC 60950-1 / EN 60950-1 / VDE 0805-1 to the supply voltage connections
and the communications interfaces.
Working on the device or on connected components
WARNING
Risk of electric shock
May cause death or serious injury
•Voltages > 60 V DC or 30 V AC may be present in the control cabinet. Therefore
appropriate safety precautions must be taken to prevent contact during commissioning
and maintenance work.
•Before carrying out any work on the device or on connected components, make sure
that the installation is in a zero-voltage state.
•Use cable types with UL approval for UL-approved systems.

Safety instructions
2.2 Security information
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 11
2.2
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions only form one element of such a concept.
Customer is responsible to prevent unauthorized access to its plants, systems, machines
and networks. Systems, machines and components should only be connected to the
enterprise network or the internet if and to the extent necessary and with appropriate security
measures (e.g. use of firewalls and network segmentation) in place.
Additionally, Siemens’ guidance on appropriate security measures should be taken into
account. For more information about industrial security, please visit
(http://www.siemens.com/industrialsecurity).
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends to apply product updates as soon as available and to
always use the latest product versions. Use of product versions that are no longer supported,
and failure to apply latest updates may increase customer’s exposure to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under (http://www.siemens.com/industrialsecurity).
2.3
IT security
Protective measures for SIMATIC PN/BACnet LINK
NOTICE
Only authorized personnel are permitted to access the system and carry out modifications.

PN/BACnet LINK
12 Operating Instructions, 10/2017, A5E39895543-AA
System overview
3
3.1
Field of application
Figure 3-1 SIMATIC PN/BACnet LINK
The PN/BACnet LINK is a communication gateway and enables the connection of SIMATIC
controllers to the BACnet/IP fieldbus over PROFINET. This connection enables the
exchange of information and data between PROFINET and BACnet/IP.

System overview
3.2 Features
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 13
3.2
Features
General features
●1 BACnet port (Fast Ethernet, RJ45). The maximum transmission rate is 100 Mbps.
●The PN/BACnet LINK supports BACnet/IP according to DIN EN ISO16484-5 and
Addendum ANSI/ASHRAE Standard 135-2012.
●BACnet/IP profile: B-GW (BACnet gateway)
●2 PROFINET interfaces (integrated switch) enable PROFINET line operation according to
Conformance Class B (CC-B).
●A PN/BACnet LINK can be both a BACnet client and a BACnet server. The actual
functionality of the PN/BACnet LINK is defined when it is configured. A mixed mode of
Client and Server functionality is possible.
●The PN/BACnet LINK is configured via the corresponding HSP in the TIA Portal.
●The following options are available for creating BACnet object references:
–Manual input of the required object addresses
–Scanning the network with takeover of the selected objects
–Import a network description (EDE file) and select the desired objects
●The BACnet server located in the PN/BACnet LINK can handle up to 1000 subscribers.
●The BACnet client located in the PB/BACnet LINK can establish communication
relationships with up to 126 BACnet devices.
BACnet characteristics
Supported BACnet object types:
●DEVICE
●BINARY INPUT
●BINARY OUTPUT
●ANALOG INPUT
●ANALOG OUTPUT
Supported BACnet services:
●Change of Value COV-A/B
●ReadProperty RP-A/B
●WriteProperty WP-A/B
Monitoring of BACnet devices:
●Cyclic query of the status properties in the device object
●Set the status in the device object of the PN/BACnet LINK

System overview
3.2 Features
PN/BACnet LINK
14 Operating Instructions, 10/2017, A5E39895543-AA
Quantity structure for configuring the PN/BACnet LINK
Limits specified by the PN/BACnet LINK
●The sum of all server objects and the object references on the BACnet devices must not
exceed 1000 (e.g. 400 binary inputs on the server and 600 referenced binary outputs).
●Maximum of 400 server objects.
●Maximum of 126 BACnet devices.
●Maximum of 204 analog inputs or 255 analog outputs on the server
●Maximum of 204 analog inputs or 256 analog outputs on the client
Limits caused by the system configuration as well as communication over PROFINET
When using multiple BACnet clients or mixing client object references and server objects,
the maximum user data length in the PROFINET frame of 1280 bytes is relevant as an
additional criterion. The user data length is exhausted in both directions, for example,
through 255 analog output on the server side plus 255 referenced analog outputs plus
3 binary outputs on the server and client side.
Depending on the PROFINET cycle, the following amount of data can be transferred:
●For a maximum of 1000 binary inputs or binary outputs total or
●For a maximum of 510 analog inputs or analog outputs (no more than 255 per
transmission direction) or
●Combinations of the items listed above
Data bytes required in the frame depending on object type:
Object type
Server
Object reference
PII
PIQ
PII
PIQ
Binary input (BI)
--
1
1
--
Binary output (BO)
1
1
1
1
Analog input (AI) --- 5 5 --
Analog output (AO)
4
1
1
4
When using the PN/BACnet LINK on a S7-1200 controller, there is an additional limitation
given by the size of the process image of the CPU. A total of no more than 204 analog
entries is possible here.

System overview
3.3 System configuration
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 15
3.3
System configuration
System configuration
The following figure shows a basic system configuration with a PN/BACnet LINK as a
communication gateway between a PROFINET network and a BACnet/IP network.
Figure 3-2 System configuration with PN/BACnet LINK
Purpose and function of the system components
The PN/BACnet LINK enables the connection of PROFINET to BACnet/IP.
The communication of the PN/BACnet LINK with the CPU of the S7 controller takes place
exclusively over the PROFINET interface.
From the PROFINET view, the PN/BACnet LINK is an IO device according to Conformance
Class B (CC-B).
The cyclic data exchange between the PN/BACnet LINK and the connected SIMATIC CPUs
is based on updating the IO image. Acyclic communication takes place by means of "Read
data record" and "Write data record" services.
Power is supplied to the PN/BACnet LINK either via an external 24 V DC power supply or via
the 24 V power supply of the SIMATIC S7 system.
The TIA Portal is used for configuring. A corresponding HSP is available for this purpose.

System overview
3.4 System requirements
PN/BACnet LINK
16 Operating Instructions, 10/2017, A5E39895543-AA
3.4
System requirements
System requirements
●PN/BACnet LINK
●Controller: Supported are SIMATIC S7-1200, SIMATIC S7-1500, SIMATIC ET 200SP,
SIMATIC OpenController
●24 V power supply
●BACnet/IP bus
●PROFINET bus
●Windows PC (for configuring, commissioning and diagnostics)
●TIA Portal V14 SP1 (at least with Update 2)
●We recommend a switch for configuring, commissioning and diagnostics.

System overview
3.5 Design
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 17
3.5
Design
PN/BACnet LINK design
The figure below shows the arrangement of the connection and display elements on the
PN/BACnet LINK. The figure shows the device without a top and bottom enclosure cover.
Design
PN/BACnet LINK design
①
24 V DC + functional grounding
②Status LEDs device operating
state + PROFINET
③
MAC addresses
X1: Address that the device uses
on PROFINET
X10: Address that the device
uses on BACnet
④Status LEDs Ethernet interface
for BACnet
⑤
Status LEDs Ethernet interface
for PROFINET
⑥Ethernet connections for
PROFINET
⑦
Ethernet connection for BACnet
⑧
Status LEDs BACnet operating
state
⑨
Rating plate
See also
24 V DC power supply (Page 55)
Connecting PROFINET (Page 57)
Connecting BACnet bus (Page 58)
Status LEDs (Page 77)

PN/BACnet LINK
18 Operating Instructions, 10/2017, A5E39895543-AA
Functions
4
4.1
BACnet objects
4.1.1
Overview
The PN/BACnet LINK can be used both as a BACnet client and as a BACnet server. As a
client, PN/BACnet LINK is the active communication partner, that is, it requests data from
other communication partners (BACnet servers). As a server, PN/BACnet LINK provides
data that is used by other communication users (BACnet clients). A mixed mode of Client
and Server functionality is possible.
Server objects and Client object references
When describing objects, a distinction is made between Server objects and Client object
references. Server objects are full BACnet objects which the PN/BACnet LINK makes
available for other BACnet devices (Clients). Client object references are references to
Server objects which are located in other BACnet devices (Servers).

Functions
4.1 BACnet objects
PN/BACnet LINK
Operating Instructions, 10/2017, A5E39895543-AA 19
Communication paths of BACnet server
BACnet objects of the type "Binary input (BI) and "Analog input" (AI) are inputs on the
BACnet side. The values are written from the S7 side to the "Present_Value" property of the
corresponding input object.
BACnet objects of the type "Binary output (BO) and "Analog output" (AO) are outputs on the
BACnet side. The "Present_Value" properties of the output objects are read from the
S7 side.
With server objects, the PN/BACnet LINK writes the status information transferred by the
S7 controller to the property "Status_Flags" of the corresponding objects.
Figure 4-1 Communication paths of BACnet server

Functions
4.1 BACnet objects
PN/BACnet LINK
20 Operating Instructions, 10/2017, A5E39895543-AA
Communication paths of BACnet client
The PN/BACnet LINK reads the values of the corresponding "Present_Value" properties and
transfers them to the S7 controller via references to input objects. The PN/BACnet LINK
writes values which come from the S7 controller to the associated "Present_Value"
properties of the corresponding objects via references to output objects.
The "Status_Flags" are transferred to the S7 controller as input data. With "Status_Flags",
transmission is always from the object to which the reference is pointing, to the S7 controller,
independent of the type of object.
Figure 4-2 Communication paths of BACnet client