RFID SYSTEMS
SIMATIC RF200
System Manual · 03/2013
SIMATIC Ident
Answers for industry.
SIMATIC Ident
RFID systems SIMATIC RF200
System Manual
03/2013
J31069-D0227-U001-A7-7618
Introduction
Safety notes
System overview
RF200 system planning
Readers
Antennas
Accessories
System integration
System diagnostics
Appendix
1
2
3
4
5
6
7
8
9
A
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.
Siemens AG |
Order number: J31069-D0227-U001 |
Copyright © Siemens AG 2010 - 2013. |
Industry Sector |
03/2013 Technical data subject to change |
All rights reserved |
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GERMANY |
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1 |
Introduction................................................................................................................................................ |
7 |
|
2 |
Safety notes............................................................................................................................................... |
9 |
|
3 |
System overview...................................................................................................................................... |
11 |
|
|
3.1 |
RFID components and their function ........................................................................................... |
12 |
|
3.2 |
Overview of transponders ............................................................................................................ |
14 |
4 |
RF200 system planning........................................................................................................................... |
17 |
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|
4.1 |
Fundamentals of application planning ......................................................................................... |
17 |
|
4.1.1 |
Selection criteria for SIMATIC RF200 components ..................................................................... |
17 |
|
4.1.2 |
Transmission window and read/write distance ............................................................................ |
17 |
|
4.1.3 |
Width of the transmission window ................................................................................................ |
20 |
|
4.1.4 |
Permissible directions of motion of the transponder .................................................................... |
21 |
|
4.1.5 |
Operation in static and dynamic mode ........................................................................................ |
21 |
|
4.1.6 |
Dwell time of the transponder ...................................................................................................... |
22 |
|
4.1.7 |
Communication between communication module, reader and transponder ............................... |
23 |
|
4.1.8 |
Impact of secondary fields ........................................................................................................... |
26 |
|
4.2 |
Field data of transponders and readers ....................................................................................... |
28 |
|
4.2.1 |
Field data ..................................................................................................................................... |
28 |
|
4.2.2 |
Minimum clearances .................................................................................................................... |
32 |
|
4.3 |
Installation guidelines ................................................................................................................... |
34 |
|
4.3.1 |
Overview ...................................................................................................................................... |
34 |
|
4.3.2 |
Reduction of interference due to metal ........................................................................................ |
34 |
|
4.3.3 |
Effects of metal on different transponders and readers ............................................................... |
37 |
|
4.3.4 |
Impact of metal on the transmission window ............................................................................... |
37 |
|
4.3.4.1 |
RF210R ........................................................................................................................................ |
38 |
|
4.3.4.2 |
RF220R ........................................................................................................................................ |
40 |
|
4.3.4.3 |
RF240R ........................................................................................................................................ |
42 |
|
4.3.4.4 |
RF260R ........................................................................................................................................ |
44 |
|
4.3.4.5 |
RF290R ........................................................................................................................................ |
47 |
|
4.3.5 |
Installation and connection of 2 to 6 antennas with one reader .................................................. |
51 |
|
4.3.5.1 |
Installation options with the antenna splitter (2 - 4 antennas) ....................................................... |
52 |
|
4.3.5.2 |
Antenna installation ...................................................................................................................... |
55 |
|
4.3.5.3 |
Installation options with the antenna multiplexer (2 - 6 antennas) ................................................. |
59 |
|
4.4 |
Further information ....................................................................................................................... |
59 |
5 |
Readers |
................................................................................................................................................... |
61 |
|
5.1 |
SIMATIC RF210R ........................................................................................................................ |
61 |
|
5.1.1 |
Features ....................................................................................................................................... |
61 |
|
5.1.2 ................................................................................................................. |
RF210R ordering data |
61 |
|
5.1.3 ............................................................................ |
Pin assignment RF210R with RS422 interface |
62 |
|
5.1.4 ...................................................................................... |
Display elements of the RF210R reader |
62 |
|
5.1.5 .............................................................................. |
Minimum distance between RF210R readers |
63 |
|
5.1.6 ........................................................................... |
Technical specifications of the RF210R reader |
64 |
SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
3 |
Table of contents
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5.1.7 |
FCC information.......................................................................................................................... |
65 |
|
5.1.8 |
Dimension drawing...................................................................................................................... |
65 |
|
5.2 |
SIMATIC RF220R....................................................................................................................... |
66 |
|
5.2.1 |
Features...................................................................................................................................... |
66 |
|
5.2.2 |
RF220R ordering data................................................................................................................. |
66 |
|
5.2.3 |
RF220R pin assignment with RS422 interface........................................................................... |
66 |
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5.2.4 |
Display elements of the RF220R reader..................................................................................... |
67 |
|
5.2.5 |
Minimum distance between RF220R readers............................................................................. |
67 |
|
5.2.6 |
Technical specifications of the RF220R reader.......................................................................... |
68 |
|
5.2.7 |
FCC information.......................................................................................................................... |
69 |
|
5.2.8 |
Dimension drawing...................................................................................................................... |
70 |
|
5.3 |
SIMATIC RF240R....................................................................................................................... |
71 |
|
5.3.1 |
Features...................................................................................................................................... |
71 |
|
5.3.2 |
RF240R ordering data................................................................................................................. |
71 |
|
5.3.3 |
Pin assignment RF240R............................................................................................................. |
71 |
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5.3.4 |
Display elements of the RF240R reader..................................................................................... |
72 |
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5.3.5 |
Minimum distance between several RF240R readers................................................................ |
72 |
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5.3.6 |
Technical specifications of the RF240R reader.......................................................................... |
73 |
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5.3.7 |
FCC information.......................................................................................................................... |
74 |
|
5.3.8 |
Dimension drawing...................................................................................................................... |
75 |
|
5.4 |
SIMATIC RF260R....................................................................................................................... |
76 |
|
5.4.1 |
Features...................................................................................................................................... |
76 |
|
5.4.2 |
Ordering data for RF260R........................................................................................................... |
76 |
|
5.4.3 |
Pin assignment RF260R............................................................................................................. |
76 |
|
5.4.4 |
Display elements of the RF260R reader..................................................................................... |
77 |
|
5.4.5 |
Minimum distance between several RF260R ............................................................................. |
77 |
|
5.4.6 |
Technical data of the RF260R reader......................................................................................... |
78 |
|
5.4.7 |
FCC information.......................................................................................................................... |
79 |
|
5.4.8 |
Dimension drawing...................................................................................................................... |
80 |
|
5.5 |
SIMATIC RF290R....................................................................................................................... |
81 |
|
5.5.1 |
Features...................................................................................................................................... |
81 |
|
5.5.2 |
Ordering data RF290R................................................................................................................ |
81 |
|
5.5.3 |
Pin assignment RF290R............................................................................................................. |
82 |
|
5.5.4 |
Display elements of the RF290R reader..................................................................................... |
84 |
|
5.5.5 |
Installing the RF290R reader...................................................................................................... |
85 |
|
5.5.5.1 |
Wall mounting ............................................................................................................................. |
85 |
|
5.5.5.2 |
Installing on the S7-300 standard rail ......................................................................................... |
86 |
|
5.5.5.3 |
Installation on a DIN rail.............................................................................................................. |
86 |
|
5.5.6 |
Technical specifications of the RF290R reader.......................................................................... |
88 |
|
5.5.7 |
FCC information.......................................................................................................................... |
89 |
|
5.5.8 |
Note on the use of the RF290R as a replacement for SLG D10 / SLG D10S............................ |
90 |
|
5.5.9 |
Dimension drawing...................................................................................................................... |
91 |
6 |
Antennas |
................................................................................................................................................. |
93 |
|
6.1 |
ANT D5........................................................................................................................................ |
93 |
|
6.1.1 |
Features...................................................................................................................................... |
93 |
|
6.1.2 |
Ordering data.............................................................................................................................. |
93 |
|
6.1.3 |
Transmission window.................................................................................................................. |
94 |
|
6.1.4 |
Flush-mounted in metal............................................................................................................... |
95 |
|
6.1.5 |
Minimum spacing........................................................................................................................ |
95 |
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SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
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Table of contents |
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6.1.6 |
Technical data.............................................................................................................................. |
97 |
|
6.1.7 |
Dimension drawing ...................................................................................................................... |
98 |
|
6.2 |
ANT D6 ........................................................................................................................................ |
99 |
|
6.2.1 |
Features....................................................................................................................................... |
99 |
|
6.2.2 |
Ordering data............................................................................................................................... |
99 |
|
6.2.3 |
Transmission window................................................................................................................. |
100 |
|
6.2.4 |
Metal-free area........................................................................................................................... |
101 |
|
6.2.5 |
Minimum spacing....................................................................................................................... |
101 |
|
6.2.6 |
Technical data............................................................................................................................ |
102 |
|
6.2.7 |
Dimensional diagram................................................................................................................. |
103 |
|
6.3 |
ANT D10 .................................................................................................................................... |
104 |
|
6.3.1 |
Features..................................................................................................................................... |
104 |
|
6.3.2 |
Ordering data............................................................................................................................. |
104 |
|
6.3.3 |
Transmission window................................................................................................................. |
105 |
|
6.3.4 |
Metal-free area........................................................................................................................... |
106 |
|
6.3.5 |
Minimum spacing....................................................................................................................... |
107 |
|
6.3.6 |
Technical data............................................................................................................................ |
108 |
|
6.3.7 |
Dimensional diagram................................................................................................................. |
109 |
7 |
Accessories........................................................................................................................................... |
111 |
|
|
7.1 |
Antenna splitter.......................................................................................................................... |
111 |
|
7.2 |
Antenna multiplexer SIMATIC RF260X..................................................................................... |
113 |
|
7.2.1 |
Characteristics........................................................................................................................... |
113 |
|
7.2.2 |
Ordering data............................................................................................................................. |
113 |
|
7.2.3 |
Description................................................................................................................................. |
114 |
|
7.2.4 |
Principle of operation................................................................................................................. |
114 |
|
7.2.5 |
Connectors................................................................................................................................. |
115 |
|
7.2.6 |
Configuration.............................................................................................................................. |
116 |
|
7.2.7 |
Parameterization........................................................................................................................ |
117 |
|
7.2.8 |
RF260X commands................................................................................................................... |
118 |
|
7.2.9 |
Technical specifications............................................................................................................. |
119 |
|
7.2.10 |
Dimensional drawing.................................................................................................................. |
120 |
|
7.3 |
Wide-range power supply unit for SIMATIC RF systems.......................................................... |
121 |
|
7.3.1 |
Features..................................................................................................................................... |
121 |
|
7.3.2 |
Scope of supply ......................................................................................................................... |
122 |
|
7.3.3 |
Ordering data............................................................................................................................. |
122 |
|
7.3.4 |
Safety Information...................................................................................................................... |
122 |
|
7.3.5 |
Connecting................................................................................................................................. |
123 |
|
7.3.6 |
Technical specifications............................................................................................................. |
124 |
|
7.3.7 |
Pin assignment of DC outputs and mains connection............................................................... |
126 |
|
7.3.8 |
Dimension drawing .................................................................................................................... |
127 |
|
7.3.9 |
Certificates and approvals ......................................................................................................... |
128 |
8 |
System integration................................................................................................................................. |
129 |
|
9 |
System diagnostics................................................................................................................................ |
131 |
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|
9.1 |
Error codes of the RF200 readers............................................................................................. |
131 |
|
9.2 |
Diagnostic functions................................................................................................................... |
132 |
|
9.2.1 |
Reader diagnostics with SLG STATUS..................................................................................... |
132 |
|
9.2.2 |
Transponder diagnostics with MDS STATUS............................................................................ |
134 |
SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
5 |
Table of contents
A |
Appendix |
................................................................................................................................................ |
135 |
|
A.1 |
Certificates and approvals ......................................................................................................... |
135 |
|
A.2 |
Connecting cable ...................................................................................................................... |
137 |
|
A.2.1 |
Reader RF2xxR (RS422) with ASM 456/RF170C/RF180C ...................................................... |
137 |
|
A.2.2 |
Reader RF2xxR (RS - 422) with ASM 475 ................................................................................. |
139 |
|
A.2.3 ............................................................... |
Reader RF240R/RF260R/RF290R (RS232) with PC |
140 |
|
A.3 ............................................................................................................................ |
Ordering data |
141 |
|
A.4 ..................................................................................................................... |
Service & Support |
148 |
|
Glossary ................................................................................................................................................ |
|
151 |
|
Index...................................................................................................................................................... |
|
157 |
|
SIMATIC RF200 |
6 |
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
Introduction |
1 |
Scope of validity of this document
This documentation is valid for all supplied variants of the SIMATIC RF200 system and describes the system delivered as of March 2013.
Registered trademarks
SIMATIC ® is a registered trademark of the Siemens AG.
Further information
You will find more detailed information in MOBY D System Manual (http://support.automation.siemens.com/WW/view/en/13628689/0/en), Function Manual FB 45 (http://support.automation.siemens.com/WW/view/en/21738808) or in RF300 system manual (http://support.automation.siemens.com/WW/view/en/21738946).
History
The following issues of the SIMATIC RF200 system manual have been published:
Output |
Note |
03/2011 |
First edition |
05/2011 |
Expansion of the documentation with the addition of the device variant RF260R with |
|
RS-232 interface |
09/2011 |
Expansion of the documentation with the device variant RF240R |
03/2013 |
Expansion of the documentation with the device variant RF290R |
SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
7 |
Introduction
|
SIMATIC RF200 |
8 |
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
Safety notes |
2 |
SIMATIC RFID products comply with the salient safety specifications to IEC, VDE, EN, UL and CSA. If you have questions about the validity of the installation 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 radio equipment approval, CE approval and manufacturer's warranty.
Repairs
Repairs may only be carried out by authorized qualified personnel.
WARNING
Unauthorized opening of and improper repairs to the device may result in substantial damage to equipment or risk of personal injury to the user.
System expansion
Only install system expansion devices designed for this device. If you install other upgrades, you may damage the system or violate the safety requirements and regulations for radio frequency interference suppression. Contact your technical support team or your sales outlet to find out which system upgrades are suitable for installation.
NOTICE
If you cause system defects by installing or exchanging system expansion devices, the warranty becomes void.
SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
9 |
Safety notes
|
SIMATIC RF200 |
10 |
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
System overview |
3 |
SIMATIC RF200 is an inductive identification system that is compatible with the ISO 15693 standard and was specially designed for use in industrial production for the control and optimization of material flows.
In contrast to SIMATIC RF300, SIMATIC RF200 is intended for RFID applications where performance requirements are not very high, for example with regard to data volume, transfer rate or diagnostics options. SIMATIC RF200 is characterized by particularly favorable prices.
SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
11 |
System overview
3.1RFID components and their function
RF200 system components
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Figure 3-1 RF200 system overview
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SIMATIC RF200 |
12 |
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
System overview
3.1 RFID components and their function
Table 3- 1 Possible reader-transponder combinations
Tags |
RF210R |
RF220R |
RF240R |
RF260R |
RF290R |
RF310M |
MDS D100 |
-- |
○ |
○ |
|
|
|
MDS D124 |
|
|
|
|
|
|
MDS D126 |
-- |
|
|
|
|
|
MDS D127 |
|
-- |
-- |
-- |
-- |
-- |
MDS D139 1) |
-- |
○ |
○ |
|
|
|
MDS D160 2) |
|
|
|
|
|
|
MDS D165 |
-- |
○ |
○ |
|
|
|
MDS D200 |
-- |
○ |
○ |
|
|
|
MDS D261 |
-- |
○ |
○ |
|
|
|
MDS D324 |
|
|
|
|
|
|
MDS D339 |
-- |
○ |
○ |
|
|
|
MDS D400 |
-- |
-- |
○ |
|
|
|
MDS D421 |
|
○ |
-- |
-- |
-- |
-- |
MDS D422 |
|
|
○ |
-- |
-- |
-- |
MDS D423 |
-- |
-- |
|
|
-- |
|
MDS D424 |
|
|
|
|
|
|
MDS D425 |
|
|
|
-- |
-- |
|
MDS D426 |
-- |
|
|
|
|
|
MDS D428 |
|
|
|
|
○ |
|
MDS D460 |
|
|
|
|
○ / 3) |
|
1)Only with the order number 6GT2600-0AA10
2)Only with the order number 6GT2600-0AB10
3)Combination recommended only in conjunction with ANT D5.
Combination possible
--Combination not possible
○Combination possible, but not recommended
For further information about the SIMATIC RF310M mobile reader, please refer to the SIMATIC RF310M Operating Instructions (http://support.automation.siemens.com/WW/view/en/40959516).
SIMATIC RF200 |
|
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
13 |
System overview
3.2Overview of transponders
Overview of typical areas of application of ISO transponders for RF200
Transponder |
Area of application |
|
MDS D100 |
From simple identification such as electronic barcode replacement or supplementation, through |
|
|
warehouse and distribution logistics, right up to product identification. With this transponder, the maximum |
|
|
ranges are achieved in combination with the SIMATIC RF260R reader. |
|
MDS D124 |
Application areas in factory automation (e.g. small paintshops to 180°C). |
|
MDS D126 |
Compact and rugged ISO transponder; suitable for identification of transport units in production-related |
|
|
logistics; can also be deployed in harsh conditions. |
|
MDS D127 |
Very compact data carrier that can be screwed into areas where precise positioning is necessary. e.g. tool |
|
|
identification. |
|
MDS D139 1) |
Applications in production automation with high temperature demands (up to +220 °C). |
|
|
Typical application areas: |
|
|
• Paintshops and their preparatory treatments |
|
|
• Primer coat, electrolytic dip area, cataphoresis with the associated drying furnaces |
|
|
• Top coat area with drying furnaces |
|
|
• Washing areas at temperatures > 85 °C |
|
|
• Other applications with higher temperatures |
|
|
|
|
MDS D160 2) |
Typical applications are, for example: |
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• |
Rented work clothing |
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• |
Hotel laundry |
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• |
Surgical textiles |
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• |
Hospital clothing |
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• |
Dirt collection mats |
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• Clothing for nursing homes/hostels |
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• Assembly lines with very small workpiece holders |
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MDS D165 |
Smart label (self-adhesive label) |
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From simple identification such as electronic barcode replacement/supplementation, through warehouse |
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and distribution logistics, right up to product identification |
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MDS D200 |
From simple identification such as electronic barcode replacement/supplementation, through warehouse |
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and distribution logistics, right up to product identification. |
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MDS D261 |
Smart label (self-adhesive label) |
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The design of the transponder (self-adhesive label) permits a variety of designs in order to ensure |
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optimum dimensioning for the widest variety of applications. |
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From simple identification such as electronic barcode replacement/supplementation, through warehouse |
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and distribution logistics, right up to product identification. |
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MDS D324 |
Production and distribution logistics as well as in assembly and production lines |
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MDS D339 |
Applications in production automation with high temperature demands (up to +220 °C). |
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For typical areas of application, see "MDS D139". |
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MDS D400 |
Simple identification such as electronic barcode replacement/supplements, from warehouse and |
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distribution logistics right through to product identification. |
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SIMATIC RF200 |
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System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
System overview
3.2 Overview of transponders
Transponder |
Area of application |
MDS D421 |
The MDS D421 is designed for tool coding according to DIN 69873. |
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It can be used wherever small data carriers and exact positioning are required, e.g. tool identification, |
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workpiece holders |
MDS D422 |
Identification of metallic workpiece holders, workpieces or containers |
MDS D423 |
Identification of metallic workpiece holders, workpieces or containers, production automation |
MDS D424 |
Production and distribution logistics as well as in assembly and production lines |
MDS D425 |
Compact and rugged ISO transponder; suitable for screw mounting. |
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Use in assembly and production lines in the powertrain sector; ideal for mounting on motors, gearboxes, |
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and workpiece holders |
MDS D426 |
Compact and rugged ISO transponder; suitable for identification of transport units in production-related |
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logistics; can also be deployed in harsh conditions |
MDS D428 |
Compact and rugged ISO transponder; suitable for screw mounting |
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Use in assembly and production lines in the powertrain sector |
MDS D460 |
Assembly lines with very small workpiece holders |
1)Only with the MLFB 6GT2600-0AA10
2)Only with the MLFB 6GT2600-0AB10
Overview of the memory sizes of the ISO transponders for RF200
Transponder |
Memory size |
MDS D1xx |
112 bytes of EEPROM |
MDS D2xx |
256 bytes of EEPROM |
MDS D3xx |
992 bytes of EEPROM |
MDS D4xx |
2000 bytes FRAM |
See also
MOBY D System Manual (http://support.automation.siemens.com/WW/view/en/13628689/0/en)
Individual documentation for MOBY D tags (http://support.automation.siemens.com/WW/view/en/10805828/133300)
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System overview
3.2 Overview of transponders
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SIMATIC RF200 |
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RF200 system planning |
4 |
Assess your application according to the following criteria, in order to choose the right SIMATIC RF200 components:
●Static or dynamic data transfer
●Data volume to be transferred
●Speed in case of dynamic transfer
●Ambient conditions such as relative humidity, temperature, chemical impacts, etc.
The reader generates an inductive alternating field. The field is strongest close to the reader; however, a read/write distance of "zero" between reader and transponder is not recommended.
The strength of the field decreases in proportion to the distance from the reader. The distribution of the field depends on the structure and geometry of the antennas in the reader and transponder
A prerequisite for the function of the transponder is a minimum field strength at the transponder, which is still barely achieved at distance Sg from the reader.
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RF200 system planning
4.1 Fundamentals of application planning
The picture below shows the transmission window of the SIMATIC RF210R and
SIMATIC RF220R readers between transponder and reader:
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63 |
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Sa Operating distance between transponder and reader
Sg Limit distance (maximum clear distance between upper surface of the reader and the transponder, at which the transmission can still function under normal conditions)
LDiameter of a transmission window
SP |
Intersection of the axes of symmetry of the transponder |
Figure 4-1 RF210R/RF220R transmission window
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SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
The figure below shows the transmission window of the SIMATIC RF240R and SIMATIC RF260R readers between transponder and reader:
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63 |
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7UDQVSRQGHU |
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Sa Operating distance between transponder and reader
Sg Limit distance (maximum clear distance between upper surface of the reader and the transponder, at which the transmission can still function under normal conditions)
L Length of a transmission window
MField centerpoint
Figure 4-2 RF240R/RF260R transmission window
The transponder can be used as soon as the intersection (SP) of the transponder enters the area of the transmission window.
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RF200 system planning
4.1 Fundamentals of application planning
From the diagrams above, it can also be seen that operation is possible within the area between Sa and Sg. The active operating area reduces as the distance increases, and shrinks to a single point at distance Sg. Only static mode should thus be used in the area between Sa and Sg.
Determining the width of the transmission window
The following approximation formula can be used for practical applications:
% y /
B:Width of the transmission window
L:Length of the transmission window
Tracking tolerances
The width of the transmission window (B) is particularly important for the mechanical tracking tolerance. The formula for the dwell time is valid without restriction when B is observed.
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SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
Detection area and direction of motion of the transponder
The transponder and reader have no polarization axis, i.e. the transponder can come in from any direction, assume any position as parallel as possible to the reader, and cross the transmission window. The figure below shows the active area for various directions of transponder motion:
/ RU |
% |
RU |
% /
% |
/ |
Transmission window
Direction of motion of the transponder
Detection area L x W
Figure 4-3 Detection areas of the reader for different directions of transponder motion
Operation in static mode
If working in static mode, the transponder can be operated up to the limit distance (Sg). The transponder must then be positioned exactly over the reader:
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Figure 4-4 Operation in static mode
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RF200 system planning
4.1 Fundamentals of application planning
Note
Note that in a metallic environment the values for the limit distance are reduced.
Operation in dynamic mode
When working in dynamic mode, the transponder moves past the reader. The transponder can be used as soon as the intersection (SP) of the transponder enters the circle of the transmission window. In dynamic mode, the operating distance (Sa) is of primary importance. [Operating distances, see Chapter Field data of transponders and readers (Page 28)]
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Figure 4-5 Operation in dynamic mode
The dwell time is the time in which the transponder remains within the transmission window of a reader. The reader can exchange data with the transponder during this time.
The dwell time is calculated thus:
= L 0,8 [ m]
tv
vTag [ m/ s]
tV: Dwell time of the transponder
L:Length of the transmission window
vTag: Speed of the transponder (tag) in dynamic mode
0,8: Constant factor used to compensate for temperature impacts and production tolerances
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SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
The dwell time can be of any duration in static mode. The dwell time must be sufficiently long to allow communication with the transponder.
The dwell time is defined by the system environment in dynamic mode. The volume of data to be transferred must be matched to the dwell time or vice versa. In general:
tv ≥ tK
tV:: Dwell time of the data memory within the field of the reader
tK: Communication time between transponder and communication module
Communication between the communication module, reader and transponder takes place asynchronously through the RS422 interface. Depending on the communication module (ASM) used, transfer rates of 19200 baud, 57600 baud or 115200 baud can be selected.
Calculation of the communication time for interference-free transfer
The communication time for fault-free data transfer is calculated as follows:
tK = K + tByte n (n >1)
If the transmission is interrupted briefly due to external interference, the reader automatically continues the command.
Calculation of the maximum amount of user data
The maximum amount of user data is calculated as follows:
tk: Communication time between communication module, reader and transponder tv: Dwell time
n:Amount of user data in bytes
nmax: Max. amount of user data in bytes in dynamic mode tbyte: Transmission time for 1 byte
K: Constant; the constant is an internal system time. This contains the time for power buildup on the transponder and for command transfer
SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
Time constants K and tbyte
Table 4- 1 Typical communication time on the serial interface when operating with presence check
Transfer rate |
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Read |
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Write |
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[baud] |
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All MDS |
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MDS D1xx/D3xx |
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MDS D2xx |
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MDS D4xx |
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K |
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tbyte |
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K |
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tbyte |
K |
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tbyte |
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K |
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tbyte |
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[ms] |
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[ms] |
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[ms] |
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[ms] |
[ms] |
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[ms] |
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[ms] |
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[ms] |
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19200 |
35 |
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1.08 |
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41 |
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2.66 |
50 |
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8.1 |
35 |
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1.08 |
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57600 |
34 |
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0.59 |
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28 |
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2.28 |
33 |
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7.7 |
34 |
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0.59 |
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115200 |
26 |
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0.56 |
|
26 |
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2.17 |
31 |
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7.6 |
26 |
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0.56 |
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Table 4- 2 Typical command duration on the air interface for operation without presence check |
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TAG type |
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Command |
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K [ms] |
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Tbyte [ms] |
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All MDS |
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Read |
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20 |
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0.55 |
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EEPROM (MDS D1xx/D3xx) |
Write |
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27 |
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2.2 |
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EEPROM (MDS D2xx) |
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Write |
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19 |
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7.5 |
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FRAM (MDS D4xx) |
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Write |
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27 |
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0.55 |
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In dynamic mode, the values for K and tbyte are independent of the transmission speed. The communication time only includes the processing time between the reader and the transponder and the internal system processing time of these components. The communication times between the communication module and the reader do not have to be taken into account because the command for reading or writing is already active when the transponder enters the transmission field of the reader.
The values shown above must be used when calculating the maximum quantity of user data in dynamic mode. They are applicable for both writing and reading.
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SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
Calculation tool
User-friendly calculation tools are available for the communication modules ASM 456, RF170C, and RF180C to determine data transfer times. The calculation tools can be found on the DVD "RFID Systems Software & Documentation", order number 6GT2080-2AA20.
Figure 4-6 Calculation tool interface
SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
Secondary fields in the range from 0 mm to 30% of the limit distance (Sg) generally always exist.
They should only be used during configuration in exceptional cases, however, since the read/write distances are very limited. Exact details of the secondary field geometry cannot be given, since these values depend heavily on the operating distance and the application. When working in dynamic mode, remember that during the transition from the secondary field to the main field the presence of the tag is lost temporarily. It is therefore advisable to select a distance > 30% of Sg.
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Figure 4-7 Gap in the field resulting from secondary fields
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SIMATIC RF200 |
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RF200 system planning
4.1 Fundamentals of application planning
Secondary fields without shielding
The following graphic shows typical primary and secondary fields, if no shielding measures are taken.
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7DJ |
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Figure 4-8 Secondary field without shielding
In this arrangement, the reader can also read tags via the secondary field. Shielding is required in order to prevent unwanted reading via the secondary field, as shown and described in the following.
SIMATIC RF200
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |
27 |
RF200 system planning
Secondary fields with shielding
The following graphic shows typical primary and secondary fields, with metal shielding this time.
The metal shielding prevents the reader from detecting tags via the secondary field.
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7DJ |
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7DJ |
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6HFRQGDU\ |
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0DLQ ILHOG |
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GLUHFWLRQ&RQYH\RU |
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7DJ |
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0HWDO VKLHOGLQJ |
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Figure 4-9 Secondary field with shielding
4.2Field data of transponders and readers
The limit distances (Sg) and operating distances (Sa) along with the length of the transmission window for each reader-transponder combination are listed in the tables below.
SIMATIC RF200
28 |
System Manual, 03/2013, J31069-D0227-U001-A7-7618 |