Siemens DESIGO Check list
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DESIGO ®™
LonWorks networks
Check list
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CA110335en_01
30.03.2007
Building Technologies
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Siemens LonWorks networks CA110335en_01
Building Technologies 30.03.2007
Table of contents
1 About this document..................................................4
1.1 Revision history.............................................................4
1.2 Before you start............................................................. 4
1.2.1 Trademarks ................................................................... 4
1.2.2 Copyright ....................................................................... 5
1.2.3 Quality assurance.......................................................... 5
1.2.4 Use of documents / Request to the reader ................... 6
2 Introduction / Background .........................................7
2.1 Target ............................................................................ 7
2.2 Scope ............................................................................ 7
2.3 Target readers............................................................... 7
2.4 Glossary ........................................................................ 8
3 Principles.....................................................................9
3.1 Main characteristics....................................................... 9
3.2 Influencing factors ......................................................... 9
3.2.1 Topology guidelines ......................................................9
3.2.2 Bus termination guidelines .......................................... 10
3.2.3 Cable length guidelines............................................... 11
3.2.4 Guidelines on the number of bus subscribers............. 12
4 Empirical design values ........................................... 15
4.1 Free topology ..............................................................15
4.2 Line topology............................................................... 16
5 Topologies.................................................................17
5.1 Physical....................................................................... 17
5.1.1 Free topology ..............................................................17
5.1.2 Line topology............................................................... 17
5.2 Logical......................................................................... 18
6 Installation guidelines...............................................19
7 Checklist for handover of the installation .............. 20
8 Troubleshooting........................................................ 24
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Siemens LonWorks networks CA110335en_01
Building Technologies Teble of contents 30.03.2007
1 About this document
1.1 Revision history
Version Date Changes Section Pages
_01
First edition 06.2003
03.2007 LON replaced with "L
New section
Cable length
Deleted: Recommended devices
Added: ConCab cable
Admissible cable types
ONWORKS"
1
3.2.3
3.2.4
4, 5
6
1.2 Before you start
1.2.1 Trademarks
The table below lists the trademarks used in this document and their
lawful owners. The use of these trademarks is subject to
international and national statutory provisions.
Trademark Statutory owner
BACnet™ American National Standard
(ANSI/ASHRAE 135-1995)
LonLink™, LON®,
LonManager®
,
LONMARK® , LonTalk®
LONWORKS®
Neuron® Echelon Corporation
All the product names listed in the table are trademarks (™) or
registered trademarks (®) of their respective owners, as specified in
the table. Further to the notes in this section, and to facilitate the
reading of the text, these trademarks will not be indicated (e.g. by
use of symbols such as ® or ™) elsewhere in the text.
Echelon Corporation
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12
15, 16, 17
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Siemens LonWorks networks CA110335en_01
Building Technologies About this document 30.03.2007
1.2.2 Copyright
This document may be duplicated and distributed only with the
express permission of Siemens and may be passed only to
authorized persons/companies with the required technical
knowledge.
1.2.3 Quality assurance
These documents have been prepared with great care.
The contents of all documents are checked at regular intervals.
All the necessary corrections are included in subsequent versions.
Documents are automatically amended as a consequence of
modifications and corrections to the products described.
Please ensure that you are aware of the latest revision date of the
documentation.
If you find any lack of clarity while using this document, or if you
have any criticisms or suggestions, please contact the product
manager in your nearest branch office, or write directly to the
support team at Headquarters in Zug (see below).
Support address:
Siemens Switzerland Ltd.
Building Technologies Group
International Headquarters
Field Support 5500
Gubelstrasse 22
6301 Zug, Switzerland
Tel +41 41 724 5500
Fax: +41 41 724 5501
E-mail:
fieldsupport-zug.ch.sbt@siemens.com
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Siemens LonWorks networks CA110335en_01
Building Technologies About this document 30.03.2007
1.2.4 Use of documents /
Request to the reader
Before using our products, it is important that you read the
documents supplied with or ordered at the same time as the
products (equipment, applications, tools etc.) carefully and in full.
More information on the products and applications (e.g. system
descriptions etc.) is available via the Internet/intranet at
https://intranet.sbt.siemens.com/desigo-field/en/pro/pro_roo.asp.
We assume that the users of these products and documents have
the appropriate authorization and training, and that they are in
possession of the technical knowledge necessary to use the
products in accordance with their intended application.
Should there still be a lack of clarity or other problems associated
with the use of the documentation, please do not hesitate to contact
the Product Manager at your nearest branch office, or get in touch
directly with the support team.
E-mail:
fieldsupport-zug.ch.sbt@siemens.com
Please note that without prejudice to your statutory rights, Siemens
accepts no liability for any losses resulting from non-observance or
improper observance of the points referred to above.
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Siemens LonWorks networks CA110335en_01
Building Technologies About this document 30.03.2007
2 Introduction / Background
The following is a list of some common mistakes associated with the
physical installation of L
• Incorrect bus terminators (wrong position or value)
• Use of the wrong cables
• Loose connections (inadequate contact)
• Max. cable length exceeded
• Incorrect routing of cables (e.g. parallel to the power cables of
variable speed drives, causing EMC problems)
• Incorrect topology
• Incomplete or inadequate project documentation
With simple guidelines and check lists, these errors can be avoided.
2.1 Target
The overall aim is to prevent problems from arising, through proper
planning and correct physical installation of the L
2.2 Scope
This document does not go into engineering, commissioning and
maintenance procedures. The information which follows applies to
ONWORKS networks communicating at 78 Kbps (kilobits per
L
second).
L
ONWORKS networks at 1.25 Mbps are not dealt with here.
2.3 Target readers
This document is primarily intended for commissioning and service
engineers and other engineering and sales personnel. To keep later
additional costs as low as possible, it is important, even in the sales
phase, to take account of the relevant constraints.
ONWORKS networks:
ONWORKS networks.
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Siemens LonWorks networks CA110335en_01
Building Technologies Introduction / Background 30.03.2007
2.4 Glossary
Term Description
Router Routers filter data packets. They only forward
packets for which there is a destination device at
the other end of the router. The filtering process is
based on information from the Network Layer.
Routers have to be configured.
Gateway Gateways operate at the Application Layer. They
perform the conversion from one application
protocol to another, e.g. from LONMARK to BACnet.
There are other gateways that keep the same
application protocol, e.g. LONMARK to LONMARK
(RXZ03.1 point coupler).
Gateways have to be engineered.
Bus
repeater
Repeaters regenerate the electrical or optical
signal. They are not responsible for packet
filtering.
ONWORKS distinguishes between:
L
– Physical repeaters
Straightforward conditioning of the electrical
signal only (without neuron chip)
– Logical repeaters
Electrical and logical signal conditioning (timing
and checksum)
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Siemens LonWorks networks CA110335en_01
Building Technologies Introduction / Background 30.03.2007
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