Leuze BPS 8 Operating Instructions
BPS 8
Bar Code Positioning System
en 03-2018/01 50105556
We reserve the right
to make technical changes
Original operating instructions
Table of contents
1 About this document ......................................................................................................... 4
1.1 Used symbols and signal words .......................................................................................... 4
2 Safety .................................................................................................................................. 6
2.1 Intended use ........................................................................................................................ 6
2.2 Foreseeable misuse............................................................................................................. 7
2.3 Competent persons.............................................................................................................. 7
2.4 Exemption of liability ............................................................................................................ 8
2.5 Laser safety notices ............................................................................................................. 8
3 Technical data of BPS 8 .................................................................................................. 11
3.1 General specifications BPS 8 ............................................................................................ 11
3.2 Dimensioned drawings....................................................................................................... 13
3.3 Reading field curves .......................................................................................................... 15
4 MA 8… / MA 2xxi connection units................................................................................. 16
4.1 MA 8.1 connection unit ...................................................................................................... 17
4.2 MA 8-01 / MA 8-02 connection unit.................................................................................... 18
4.3 MA 2xxi connection unit ..................................................................................................... 20
5 Bar code tape ................................................................................................................... 21
5.1 General information ........................................................................................................... 21
5.2 Control bar codes............................................................................................................... 23
5.3 Marker bar codes ............................................................................................................... 27
5.4 Technical data of the BCB8 bar code tape ........................................................................ 29
5.5 Dimensioned drawing for position, control and marker bar codes ..................................... 30
6 Mounting and installation ............................................................................................... 31
6.1 Mounting the bar code tape ............................................................................................... 31
6.1.1 Installation and application remarks ............................................................................................31
6.1.2 Cutting bar code tapes.................................................................................................................33
6.1.3 Mounting the BCB........................................................................................................................ 36
6.1.4 BCB repair with repair kit.............................................................................................................39
6.2 Mounting the BPS 8 ........................................................................................................... 41
6.2.1 BT 8-01 mounting device.............................................................................................................43
6.2.2 BT 8-0 mounting device...............................................................................................................44
6.3 Device arrangement...........................................................................................................45
Leuze electronic BPS 8 1
Table of contents
7 Electrical connection ....................................................................................................... 48
7.1 Safety notices for the electrical connection........................................................................ 48
7.2 Electrical connection BPS 8............................................................................................... 49
7.2.1 BPS 8 - PWR IN - Voltage supply, RS 232, Switching input/output ............................................49
7.3 Electrical connection via connection unit MA 8.1 ............................................................... 51
7.3.1 Electrical connection MA 8.1 .......................................................................................................51
7.3.2 PWR IN HOST/RS 232 connector – voltage supply and RS 232................................................52
7.3.3 SW IN/OUT socket – switching input and switching output......................................................... 53
7.3.4 BCL socket – connecting the BPS 8 to the MA 8.1 .....................................................................55
7.4 Electrical connection via connection unit MA 8-01 / MA 8-02 ............................................ 56
7.4.1 PWR IN HOST/RS485 connector – voltage supply/RS 485........................................................ 56
7.4.2 SW IN/OUT socket – switching input and switching output......................................................... 57
7.4.3 BCL/BPS socket – connecting the BPS 8 to the MA 8-01/MA 8-02 ............................................ 59
7.4.4 Termination of the RS 485 interface............................................................................................60
8 Configuration / device parameters ................................................................................. 61
8.1 RS 232/RS 485 interface ................................................................................................... 61
8.1.1 General information .....................................................................................................................61
8.2 BPS Configuration Tool software....................................................................................... 62
8.2.1 Installation of the BPS Configuration Tool software ....................................................................62
8.2.2 Brief manual for the BPS Configuration Tool............................................................................... 63
8.2.3 Setting the parameters ................................................................................................................ 67
8.3 Service operating mode ..................................................................................................... 68
8.3.1 Activate service interface.............................................................................................................68
8.3.2 Connecting the service interface .................................................................................................68
8.3.3 Overview of commands and parameters..................................................................................... 69
8.4 Overview of the parameter structure.................................................................................. 70
8.5 Detailed description of the tabs.......................................................................................... 71
8.5.1 Control .........................................................................................................................................72
8.5.2 Position detection ........................................................................................................................73
8.5.3 Communication............................................................................................................................78
8.5.4 Switching input............................................................................................................................. 80
8.5.5 Switching output ..........................................................................................................................82
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Table of contents
9 Protocols for position value output ............................................................................... 84
9.1 Binary protocol 1 – BPS 8 SM 10x-01 / BPS 8 SM 10x-05 ................................................ 84
9.1.1 Data format.................................................................................................................................. 84
9.1.2 Request telegram to the BPS 8 SM 10x-01 / BPS 8 SM 10x-05 .................................................84
9.1.3 BPS 8 SM 10x-01 / BPS 8 SM 10x-05 response telegram..........................................................86
9.2 Binary protocol 2 – BPS 8 SM 10x-02 ............................................................................... 91
9.2.1 Data format.................................................................................................................................. 91
9.2.2 Request telegram to the BPS 8 SM 10x-02................................................................................. 91
9.2.3 BPS 8 SM 10x-02 response telegram .........................................................................................93
9.3 Binary protocol 3 – BPS 8 SM 10x-03 ............................................................................... 98
9.3.1 Data format.................................................................................................................................. 98
9.3.2 Request telegram to the BPS 8 SM 10x-03................................................................................. 98
9.3.3 BPS 8 SM 10x-03 response telegram .......................................................................................100
9.4 Binary protocol 4 – BPS 8 SM 10x-04 ............................................................................. 102
9.4.1 Data format................................................................................................................................ 102
9.4.2 Request telegram to the BPS 8 SM 10x-04............................................................................... 102
9.4.3 BPS 8 SM 10x-04 response telegram .......................................................................................105
9.4.4 Binary protocol 4 request sequences ........................................................................................107
9.5 Binary protocol 6 – BPS 8 SM 10x-10 ............................................................................. 109
9.5.1 Data format................................................................................................................................ 109
9.5.2 Request telegram to the BPS 8 SM 10x-10............................................................................... 109
9.5.3 BPS 8 SM 10x-10 response telegram .......................................................................................111
10 Diagnostics and troubleshooting ................................................................................. 113
10.1 Operating indicators of the LEDs ..................................................................................... 113
10.2 General causes of errors ................................................................................................. 113
10.3 Error on the interface ....................................................................................................... 114
11 Maintenance ................................................................................................................... 115
11.1 Cleaning........................................................................................................................... 115
11.2 Repairs, servicing ............................................................................................................ 115
11.3 Disassembling, packing, disposing .................................................................................. 115
12 Type overview and accessories ................................................................................... 116
12.1 Type overview: BPS 8...................................................................................................... 116
12.2 Type overview: Bar code tape ......................................................................................... 116
12.3 Accessories – Modular connection unit ........................................................................... 117
12.4 Accessories – Fieldbus gateway...................................................................................... 117
12.5 Accessories – Cables ...................................................................................................... 117
12.6 Accessories – Mounting device ....................................................................................... 118
12.7 Accessories - Configuration software .............................................................................. 118
13 Appendix......................................................................................................................... 119
13.1 EC Declaration of Conformity .......................................................................................... 119
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1 About this document
1.1 Used symbols and signal words
Symbol indicating dangers to persons
Symbol indicating dangers from harmful laser radiation
About this document
NOTE
Table 1.1: Warning symbols and signal words
Table 1.2: Other symbols
BCB Bar code tape (general)
BCB8 Bar code tape (BCB type with 30 mm grid)
BPS Bar code Positioning System
BT Mounting device
CDRH Center for Devices and Radiological Health
CFR Code of Federal Regulations
DGUV
EMC Electromagnetic compatibility
EN European standard
FE Functional earth
Signal word for property damage
Indicates dangers that may result in property damage if the measures
for danger avoidance are not followed.
Symbol for tips
Text passages with this symbol provide you with further information.
Symbol for action steps
Text passages with this symbol instruct you to perform actions.
Deutsche Gesetzliche Unfallversicherung (statutory German accident
insurance association)
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IEC International Electrotechnical Commission
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IO or I/O Input/Output
IP International Protection
LED Light Emitting Diode
MA Modular connection unit
MVS Type of control bar code
NEC National Electric Code
PE Protective Earth
PWR Power – Supply voltage
UL Underwriters Laboratories
UV Ultraviolet light
Table 1.3: Terms and abbreviations
About this document
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2Safety
The bar code positioning systems of the BPS 8 series and the MA 8… modular connection
unit have been developed, produced and tested subject to the applicable safety standards.
They correspond to the state of the art.
NOTE
Declaration of Conformity
A copy of all declarations of conformity available for the product can be found in the
appendix of this handbook (see chapter 13.1 "EC Declaration of Conformity" on
Page 119).
2.1 Intended use
The bar code positioning system of the BPS 8 series is an optical measuring system which
uses visible red laser light to determine the position of the BPS relative to a permanently
mounted bar code tape.
The optional connector and interface unit MA 8… is intended for the easy connection of bar
code positioning systems of type BPS 8.
Areas of application
The BPS 8 bar code positioning systems are designed for the following areas of application:
• Crane bridges and trolleys
• High-bay storage devices
• Side-tracking skates
• Telpher lines
•Elevators
Safety
CAUTION
Observe intended use!
The protection of personnel and the device cannot be guaranteed if the device is operated
in a manner not complying with its intended use.
Only operate the device in accordance with its intended use.
Leuze electronic GmbH + Co. KG is not liable for damages caused by improper use.
Read these operating instructions before commissioning the device. Knowledge of
this document is required in order to use the equipment for its intended purpose.
NOTE
Comply with conditions and regulations!
Observe the locally applicable legal regulations and the rules of the employer's liability
insurance association.
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CAUTION
UL applications!
For UL applications, use is only permitted in Class 2 circuits in accordance with the NEC
(National Electric Code).
2.2 Foreseeable misuse
Any use other than that defined under "Intended use" or which goes beyond that use is
considered improper use.
In particular, use of the device is not permitted in the following cases:
• in rooms with explosive atmospheres
• as stand-alone safety component in accordance with the machinery directive
• for medical purposes
NOTE
Do not modify or otherwise interfere with the device!
Do not carry out modifications or otherwise interfere with the device.
The device must not be tampered with and must not be changed in any way.
The device must not be opened. There are no user-serviceable parts inside.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.
Safety
1
2.3 Competent persons
Connection, mounting, commissioning and adjustment of the device must only be carried
out by competent persons.
Prerequisites for competent persons:
• They have a suitable technical education.
• They are familiar with the rules and regulations for occupational safety and safety at
work.
• They are familiar with the technical description of the device.
• They have been instructed by the responsible person on the mounting and operation
of the device.
1. Use as safety-related component within the safety function is possible, if the component combination is designed
correspondingly by the machine manufacturer.
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Certified electricians
Electrical work must be carried out by a certified electrician.
Due to their technical training, knowledge and experience as well as their familiarity with
relevant standards and regulations, certified electricians are able to perform work on electrical systems and independently detect possible dangers.
In Germany, certified electricians must fulfill the requirements of DGUV Provision 3 (e.g.
electrician foreman). In other countries, there are respective regulations that must be
observed.
2.4 Exemption of liability
Leuze electronic GmbH + Co. KG is not liable in the following cases:
• The device is not being used properly.
• Reasonably foreseeable misuse is not taken into account.
• Mounting and electrical connection are not properly performed.
• Changes (e.g., constructional) are made to the device.
2.5 Laser safety notices
ATTENTION, LASER RADIATION – LASER CLASS 2
Never look directly into the beam!
The device satisfies the requirements of IEC 60825-1:2007 (EN 60825-1:2007) safety
regulations for a product of laser class 2 as well as the U.S. 21 CFR 1040.10 regulations
with deviations corresponding to "Laser Notice No. 50" from June 24, 2007.
Never look directly into the laser beam or in the direction of reflected laser beams!
If you look into the beam path over a longer time period, there is a risk of injury to the
retina.
Do not point the laser beam of the device at persons!
Interrupt the laser beam using a non-transparent, non-reflective object if the laser
beam is accidentally directed towards a person.
When mounting and aligning the device, avoid reflections of the laser beam off reflec-
tive surfaces!
CAUTION! The use of operating or adjusting devices other than those specified here
or carrying out of differing procedures may lead to dangerous exposure to radiation.
Observe the applicable statutory and local laser protection regulations.
The device must not be tampered with and must not be changed in any way.
There are no user-serviceable parts inside the device.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.
Safety
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Safety
A Laser aperture
B Laser warning sign
A
A
B
B
NOTE
Affix laser information and warning signs!
Laser warning and laser information signs are affixed to the device (see Figure 2.1):
In addition, self-adhesive laser warning and information signs (stick-on labels) are supplied
in several languages (see Figure 2.2).
Affix the laser information sheet to the device in the language appropriate for the place
of use.
When using the device in the U.S.A., use the stick-on label with the "Complies with
21 CFR 1040.10" notice.
Affix the laser information and warning signs near the device if no signs are attached
to the device (e.g., because the device is too small) or if the attached laser information
and warning signs are concealed due to the installation position.
Affix the laser information and warning signs so that they are legible without exposing
the reader to the laser radiation of the device or other optical radiation.
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Figure 2.1: Laser apertures, laser warning signs
AVOID EXPOSURE – LASER RADIATION
IS EMITTED FROM THIS APERTURE
EXPOSITION DANGEREUSE – UN RAYONNEMENT
LASER EST ÉMIS PAR CETTE OUVERTURE
LASERSTRAHLUNG
NICHT IN DEN STRAHL BLICKEN
LASER KLASSE 2
DIN EN 60825-1:2008-05
Max. Leistung (peak):
Impulsdauer:
Wellenlänge:
RADIAZIONE LASER
NON FISSARE IL FASCIO
APARRECCHIO LASER DI CLASSE 2
EN 60825-1:2007
Potenza max. (peak):
Durata dell'impulso:
Lunghezza d'onda:
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
EN 60825-1:2007
Maximum Output (peak):
Pulse duration:
Wavelength:
RAYONNEMENT LASER
NE PAS REGARDER DANS LE FAISCEAU
APPAREIL À LASER DE CLASSE 2
EN 60825-1:2007
Puissance max. (crête):
Durée d`impulsion:
Longueur d`onde:
RADIACIÓN LÁSER
NO MIRAR FIJAMENTE AL HAZ
PRODUCTO LÁSER DE CLASE 2
EN 60825-1:2007
Potencia máx. (peak):
Duración del impulso:
Longitud de onda:
RADIAÇÃO LASER
NÃO OLHAR FIXAMENTE O FEIXE
EQUIPAMENTO LASER CLASSE 2
EN 60825-1:2007
Potência máx. (peak):
Período de pulso:
Comprimento de onda:
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
IEC 60825-1:2007
Complies with 21 CFR 1040.10
Maximum Output (peak):
Pulse duration:
Wavelength:
䉏⏘戟⺓
▎䦃展⏘㧮
伊䉏⏘ℶ❐
GB7247.1-2012
㦏⮶戢⒉᧤⽿⋋᧥
厘⑁㖐兼㢅梃
㽱栎
1,7 mW
<420 μs
655 nm
1,7 mW
<420 μs
655 nm
1.7 mW
<420 μs
655 nm
1,7 mW
<420 μs
655 nm
1,7 mW
<420 μs
655 nm
1,7 mW
<420 μs
655 nm
1.7 mW
<420 μs
655 nm
1.7 mW
<420 μs
655 nm
50038277-03
Safety
Figure 2.2: Laser warning and information signs – supplied stick-on labels
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3 Technical data of BPS 8
3.1 General specifications BPS 8
Optical data
Light source Laser diode
Beam deflection Via rotating polygon wheel
Reading distance See reading field (Figure 3.3 and Figure 3.4 on Page 15)
Optical window Glass
Laser class 2 acc. to IEC 60825-1:2007
Wavelength 655nm
Max. output power (peak) 1.7mW
Impulse duration < 420 µs
Measurement data
Reproducible accuracy ±0.15 … ±1mm depending on device version
Response time 26.6ms (configurable)
Output time 3.3ms
Basis for contouring error calculation
Working range BPS 8 SM 102: 80 … 140mm
Max. traverse rate 4 m/s
Electrical data
Operating voltage
Power consumption BPS 8: 1.5W
Interface type RS 232 directly or in combination with MA 8.1,
Service interface RS 232 directly on the BPS 8,
Switching input /
switching output
Green LED Device ready (power on)
Mechanical data
Degree of protection IP 67
Weight 70g
Dimensions (H x W x D) 48 x 40.3 x 15mm (BPS 8 SM 102…),
Housing Diecast zinc
1)
13.3ms
BPS 8 SM 100: 60 … 120mm
BPS 8: 4.9 … 5.4VDC
With MA 8…: 10 … 30VDC
With MA 8…: max. 2W
RS 485 in combination with MA 8-01/MA 8-02
RS 232 via MA 8.1,
RS 485 via MA 8-01/MA 8-02,
with default data format:
9.6 kBit/s, 8 data bits, no parity, 1 stop bit
1 switching input, 1 switching output, each is programmable,only in combination with MA 8…
61 x 51 x 17.4mm (BPS 8 SM 100…)
Technical data of BPS 8
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Technical data of BPS 8
Environmental data
Operating temperature range 0 °C … -40 °C
Storage temperature range -20 °C … -60 °C
Air humidity Max. 90 % rel. humidity, non-condensing
Vibration IEC 60068-2-6, test Fc
Shock/continuous shock IEC 60068-2-27, test Ea
Electromagnetic compatibility EN 61000-6-2:2005+AC:2005,
Conformity CE, CDRH
Certifications
1) 2)
Bar code tape
Max. length (measurement
length)
Ambient temperature -40 °C … -120 °C
Mech. properties Scratch and wipe resistant, UV resistant,
1) For UL applications: use is permitted exclusively in Class 2 circuits according to NEC
2) These sensors shall be used with UL Listed Cable assemblies rated 30V, 0.5A min, in the
field installation, or equivalent (categories: CYJV/CYJV7 or PVVA/PVVA7)
3) Depends on the transmission protocol and on the configured resolution.
Table 3.1: General specifications
EN 61000-6-3:2007+A1:2011+AC:2012
UL 60950-1, CSA C22.2 No.60950-1
10,000 m
3)
moisture resistant, partly chemical resistant
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3.2 Dimensioned drawings
A Turning connector, turnable 90°
B Indicator diodes (B1: status LED, B2: decode LED)
C Scanning beam, divergence max. 5mm at 150 mm reading distance
D Optical axis
Thread depth:
3mm
Thread depth:
3mm
BPS 8 SM 102… with front beam exit
Technical data of BPS 8
Figure 3.1: BPS 8 SM 102… dimensioned drawing
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BPS 8 SM 100… with lateral beam exit
A Turning connector, turnable 90°
B Indicator LEDs (B1: status LED, B2: decode LED)
C Scanning beam, divergence max. 5mm at 150 mm reading distance
D Optical axis
Thread depth:
3mm
Thread depth:
3mm
Technical data of BPS 8
Figure 3.2: BPS 8 SM 100-01 dimensioned drawing
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3.3 Reading field curves
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
0 1020304050607080 90 100 110 120 130 140 150 160
170
Reading distance [mm]
Reading field width [mm]
Working range
BPS 8 SM 102
Reading distance [mm]
Reading field width [mm]
Working range
BPS 8 SM 100
BPS 8 SM 102 with front beam exit
Figure 3.3: Reading field curve BPS 8 SM 102 with front beam exit
BPS 8 SM 100 with lateral beam exit
70
60
50
40
30
20
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10
0
-10
-20
-30
-40
-50
-60
-70
0 102030405060 70 80 90 100 110 120 130 140 150 160
Figure 3.4: Reading field curve BPS 8 SM 100 with lateral beam exit
Technical data of BPS 8
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170
MA 8… / MA 2xxi connection units
4 MA 8… / MA 2xxi connection units
Various connection units are available for convenient electrical connection:
• MA 8.1 RS 232 interface Operating voltage 10 … 30V DC
• MA 8-01 RS 485 interface Operating voltage 10 … 30VDC
• MA 8-02 RS 485 interface Operating voltage 10 … 30VDC
• MA 2xxi Different fieldbus systems Operating voltage 18 … 30V DC
MA 8-01 and MA 8-02 differ in the resistor network for the termination of the RS 485 interface:
• MA 8-01 390 / 220 / 390
• MA 8-02 47k / 150 / 47 k
You can find connection and interconnection cables of varying lengths in Chapter 12.5
"Accessories – Cables" on page 117.
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4.1 MA 8.1 connection unit
A
B
C
A M12 socket, 5-pin, A-coded
B M12 connector, 5-pin, A-coded
C FE connection
all dimensions in mm
The MA 8.1 modular connection unit is an optional accessory for the connection of a BPS 8
to a DC voltage supply of 10 to 30 V DC. If offers the following advantages over the installation of the BPS 8 as a stand-alone device:
• M12 socket for switching input and switching output
• M12 connector for RS 232 interface and voltage supply 24VDC
• M12 socket for connection of the BPS 8
MA 8… / MA 2xxi connection units
Figure 4.1: Dimensioned drawing and pin assignment of the MA 8.1 connection unit
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4.2 MA 8-01 / MA 8-02 connection unit
A
B
C
A M12 socket, 5-pin, A-coded
B M12 connector, 5-pin, A-coded
C FE connection
all dimensions in mm
The modular connection unit is an optional accessory when connecting a BPS 8 to an
RS 485 interface. The RS 485 interface, the switching input and the switching output are all
connected to the MA 8-01/MA 8-02. It also supplies voltage to the BPS 8. The MA 8-01/
MA 8-02 connection unit offers the following advantages over the installation of the BPS 8
as a stand-alone device:
• M12 socket for switching input and switching output
• M12 connector for RS 485 interface and voltage supply 24VDC
• M12 socket for connection of the BPS 8
MA 8… / MA 2xxi connection units
Figure 4.2: Dimensioned drawing and pin assignment of the MA 8-01/MA 8-02 connection
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unit
MA 8… / MA 2xxi connection units
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4.3 MA 2xxi connection unit
The MA 2xxi modular connection unit is a gateway for the BPS 8 for connecting to various
fieldbus systems and Ethernet networks.
In this setup, the data of the BPS 8 is transmitted through the RS 232 interface to the
MA 2xxi and implemented there on the relevant fieldbus/Ethernet systems.
The following gateways are available for the BPS 8:
• MA 204i PROFIBUS DP
• MA 208i Ethernet
• MA 248i PROFINET
• MA 235i CANopen
• MA 238i EtherCAT
• MA 255i DeviceNet
• MA 258i Ethernet/IP
You can find more detailed information on the gateways at www.leuze.com.
MA 8… / MA 2xxi connection units
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5 Bar code tape
5.1 General information
The bar code tape is available in different variants:
• BCB bar code tape with 40 mm grid, Code128 with character set C, increasing in
increments of 4 (e.g., 000004, 000008, … )
• BCB8 bar code tape with 30 mm grid, Code128 with character set C, increasing in
increments of 3 (e.g., 000003, 000006, … )
CAUTION
Bar code tape!
BPS 8 is set for bar code tape BCB8 with a 30 mm grid by default.
The BPS 8 can be configured for position measurement with a 40 mm bar code tape with
the BPS Configuration Tool.
A bar code tape consists of a sequence of individual position bar codes in one of the two
grids. Defined cut marks are provided for cutting the BCB.
The bar code tape is delivered on a roll. A roll contains up to 200 m of BCB. The BCB always
starts with the lowest position value at the outside of the roll (this is the value ’000000’ for
standard tapes). The BCB ends at the inside on the wrapping core with the largest position
value. If more than 200 m of BCB is ordered, the total length is divided into rolls of 200 m.
Bar code tapes with special requirements with respect to height, length and value range can
be ordered from Leuze electronic (see chapter 12.2 "Type overview: Bar code tape").
Bar code tape
NOTE
Value range for BCB with special requirements!
When ordering bar code tapes with special requirements, make certain that the value
range contains only values that are divisible by three (BCB8 with 30 mm grid).
It may otherwise not be possible to purchase and use repair tapes.
NOTE
Only one BCB type per system!
In a given system, use either only BCB8 with 30 mm grid or only BCB with 40 mm grid.
If different BCB grids are used in one system, the BPS cannot ensure an exact position
determination.
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Bar code tape BCB8 with 30 mm grid
A
B
A Position bar code with position value
B Cut mark
30 mm
Bar code tape
BCB8 BCB8
000036 000039 000042 000045 000048 000051
BCB8
BCB8 BCB8
BCB8
Figure 5.1: Bar code tape BCB8 with 30 mm grid
The standard height of 47 mm can be adapted. Other BCB heights (25 mm and 30 mm) and
special heights on request.
With a standard bar code tape and repair tape with 30 mm grid, the printed numerical values
are divisible by three without a remainder. For bar code tapes with 30 mm grid, the designation BCB8 is printed in plain text in addition to the position value.
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5.2 Control bar codes
BCB8 BCB8
BCB8
BCB8
BCB8
A
B
A Control bar code
B The control bar code is decoded in the marked scans
With the help of control bar codes that are affixed on top of the bar code tape at appropriate
positions, functions in the BPS can be activated or deactivated, e.g. precise, reproducible
switching between different BCB value ranges at switches.
Code type Code128 with character set B is used for the control bar code.
The MVS label is a control bar code for the precise, reproducible switching of position values
from a preceding to a subsequent bar code tape. The subsequent bar code tape begins with
another, new value range.
The changeover between the different value ranges of the two BCBs occurs independent of
the direction of travel in the center of the MVS control bar code.
If, upon reaching the the center of the MVS control bar code, the BPS 8 does not detect the
value range of the subsequent BCB in the scanning beam, the position value of the first BCB
section is still output for half of the label width starting from the center of the MVS control bar
code.
Arrangement of the control bar codes
The control bar code is attached in such a way that it replaces one position bar code or
seamlessly connects two bar code tapes with different value ranges to one another ((see
figure 5.2)).
Bar code tape
Figure 5.2: Arrangement of the MVS control bar code
NOTE
Distance between two control bar codes!
Make certain that there is only one control bar code (or marker bar code) in the scan-
ning beam at a time.
The minimum distance between two control bar codes is determined by the distance
between the BPS 8 and bar code tape and the resulting length of the scanning beam.
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Bar code tape
BCB8 BCB8
BCB8
BCB8
BCB8
BCB8 BCB8
BCB8
BCB8
A
B
A Control bar code perfectly affixed on the bar code tape
B Control bar code at small gap between two bar code tapes
The control bar codes are simply affixed over the existing bar code tape.
NOTE
Grid dimension of control/marker bar code!
The control/marker bar code must match the selected grid of the bar code tape used. If a
30 mm grid is used (default), then the control/marker bar code must also be inserted in the
30 mm grid. With a 40 mm grid, a 40 mm control/marker bar code is used.
Keep the gap between the BCBs that are switched between as small as possible.
Figure 5.3: Correct positioning of the control bar code
NOTE
Gaps in bar code tape!
Avoid polished and high-gloss surfaces.
Keep the gaps between the two bar code tapes and the control bar code as small as
possible.
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Bar code tape
MVS control bar code
With the MVS control bar code, there is precise and reproducible switching between two bar
code tapes with different value ranges.
NOTE
1 m minimum distance of the bar code values for measurement value switching!
For different BCB value ranges, make certain that a minimum distance of the printed
value range of 1 m between the preceding position bar code (before the control bar
code) and the subsequent position bar code (after the control bar code) is maintained.
Example: If the last position bar code on the BCB8 before the control bar code is
’075120’, the following position bar code on the BCB8 after the control bar code must
be at least ’075222’ (printed values BCB8 in cm).
If the minimum value range distance of 1 m between the bar code values is not maintained, position determination may be faulty.
• The end of the preceding bar code tape and the start of the subsequent bar code tape
can end and begin, respectively, with completely different position bar codes.
• BCB changeover by means of a control bar code always occurs at the same position,
i.e., it serves to change from the preceding tape to the subsequent tape and vice
versa.
• If the center of BPS 8 reaches the center of the MVS control bar code at the transition
position, the value range of the subsequent BCB is switched to – provided the BPS 8
has the next position bar code in the scanning beam(see figure 5.4).
This means the output position value is always uniquely assigned to the preceding or
subsequent BCB.
If, upon reaching the the center of the MVS control bar code, the BPS 8 does not detect the
value range of the subsequent BCB in the scanning beam, the position value of the first BCB
section is still output for half of the label width starting from the center of the MVS control bar
code.
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Bar code tape
BCB8 BCB8
BCB8
BCB8
BCB8
A
B
A Scanning beam
B Control bar code center
C BPS 8 center
D Direction of movement
E MVS hysteresis range
D
C
E E
Figure 5.4: Measurement range changeover via MVS control bar code
NOTE
Measurement range changeover!
The measurement range changeover from the preceding to the subsequent BCB occurs
when the center of the BPS 8 (C in Figure 5.4) is opposite the center of the control bar
code (B in Figure 5.4).
NOTE
Hysteresis for measurement range changeover!
If a measurement range changeover occurs in the center of the MVS control bar code to
the subsequent BCB, a hysteresis range of ± 2mm (E in Figure 5.4) is activated.
If the direction of movement is reversed within this hysteresis range, a measurement range
changeover occurs to the preceding BCB 15 mm after the center of the MVS control bar
code.
Within this range of 15 mm, the position values are calculated from the subsequent BCB.
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Leuze electronic BPS 8 26
5.3 Marker bar codes
BCB8
BCB8
BCB8 BCB8
BCB8
A
A Marker bar code
Marker bar codes, which are affixed at the appropriate locations via a position bar code, can
be used to trigger various functions in the superior control. The BPS 8 detects the defined
marker bar codes in the scanning beam, decodes them, and makes them available to the
control.
NOTE
Distance between two marker bar codes!
Make certain that there is only one marker bar code (or control bar code) in the scan-
ning beam at a time.
The minimum distance between two marker bar codes is determined by the distance
between the BPS 8 and bar code tape and the resulting length of the scanning beam.
Definition of the marker bar code
The following combinations of letters and numbers may be used as marker bar codes:
• First character: Capital letter A, B, C, D or Z
• Second character: Digit from 0…9
• Third character: Digit from 0…9
Structure of the marker bar codes
Code type Code128 with character set B is used for the marker bar code.
Arrangement for using the marker bar code with position bar codes
The marker bar code must be attached to the bar code tape aligned with the grid of the
actual coding. A position bar code should be detected by the scanning beam before and
after the marker bar code.
Bar code tape
Leuze electronic BPS 8 27
Figure 5.5: System arrangement of marker bar code
TNT 35/7-24V
Bar code tape
Arrangement for using the marker bar code without position bar codes
The marker bar code must be positioned within the BPS 8's detection range.
NOTE
If position bar codes are arranged in the detection area of the scanning beam before and
after the marker bar code, the position calculation is continued without interruption.
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5.4 Technical data of the BCB8 bar code tape
Dimensions
Grid 30mm
Standard height 47mm
Special heights 25mm, 30mm, more special heights on request
Length 0 … 5m, 0 … 10m, 0 … 20m, …, 0 … 150m,
Tape tolerance ±1 mm per meter
Structure
Surface protection Polyester, matt
Base material Polyester film, affixed without silicone
Adhesive Acrylate adhesive
Strength of adhesive 0.1mm
Environmental data
Processing temperature
received
Temperature resistance -40 °C … -120 °C
Dimensional stability No shrinkage, tested according to DIN 30646
Curing Final curing after 72h,
Weathering resistance UV light, humidity,
Chemical resistance
(checked at 23 °C over 24 h)
Behavior in fire Self-extinguishing after 15 s, does not drip
Surface Grease-free, dry, clean, smooth
Mechanical properties Scratch and wipe resistant, UV resistant,
Table 5.1: Technical data of the BCB8 bar code tape
(see chapter 12.2 "Type overview: Bar code tape")
0 °C … -45 °C
the BPS 8 can detect the position immediately after the
BCB is affixed
salt spray fog (150 h/5 %)
Transformer oil, diesel oil, white spirit, heptane,
ethylene glycol (1:1)
moisture resistant, partly chemical resistant
Bar code tape
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