Measuring Light Curtain Connecting and Operating Instructions
Contents
1. 0xxx CRC 8 Bit CRC with generator polynomial 19B hex The CRC sum is arrived at by means of STK LDP STA STZ NDT Example of a complete send string 64 beam unit beams 1 10 no reception eams 40 50 weak reception object in the measurement field no error OBH ODH OCH 40H 00H FCH FFH FFH FFH FFH FFH FFH 58H Driver Program for the PLC Control e g Siemens S7 200 An PLC specific software module is required in order for the control to be able to accept the measurement data The program configuration is clearly shown by the following example of the driver for the Siemens S7 200 control Based on the transmission protocol described above drivers for other controls can be easily created by any programmer familiar with that particular control Leuze lumiflex would be happy to lend support in this regard and is endeavoring to gradually offer drivers for other well known controls The following example illustrates the program structure of the software module The corresponding program listing in STEP7 Micro is available upon request The driver program which functions as an interrupt module takes over the SCAN measurement data as a serial data stream at Port 0 and deposits them in a data buffer The individual light axis are made available to the user bit by bit beginning at memory position VB20 1 light 0 no light continuing from the first light axis at the SCAN connection to the last light axis at SCAN s fr2. 2700 2720 5 2798 5 2788 5 1 52 43 2 S30 3000 3020 5 3098 5 3088 5 1 68 48 SCAN Leuze a Mounting dimension b Clearance for removing the plug c Screw M5 or M5 d End of sensing zone Fig 9 Dimensional Drawing of SCAN Series S30 Leuze SCAN 17 SCAN Master Mounting dimension End of sensing zone Coupling Total length including coupling max 250 mm ag om PG7 Fig 10 Dimensional Drawing of SCAN Cascaded Design 18 SCAN Leuze Dimensional Table Device Type Slave MaB A Slave Ma B 30 150 180 248 5 30 225 225 323 5 S30 300 330 398 5 S30 450 480 548 5 30 600 630 698 5 30 750 780 848 5 S30 900 930 998 5 S30 1050 1080 1148 5 830 1200 1230 1298 5 830 1350 1380 1448 5 830 1500 1530 1598 5 830 1650 1680 1748 5 830 1800 1830 1898 5 The total measurement times for master and slave units are made up of the sum of the partial scan times 9 Selection and Ordering Information 9 1 Device Designation Example SR30 900 M Ea bb dddd e S SCAN a T transmitter R receiver bb Resolution mm dddd Measurement height mm e Only for cascadable units M master unit S slave unit 9 2 Order Numbers and Accessories The scope of supply of a SCAN consists of e 1 SCAN transmitter ST Leuze SCAN 19 e 1 SCAN receiver SR e 1 set of Connecting and Operating Instructions Order numb
3. OBH LDP LDP Example STA dependent on the beam number min 9 max 35 1 byte STK 1 byte LDP 1 byte STA 1 byte STZ x byte NDT 1 byte CRC where x NDT STZ 8 rounded up to the next full byte STZ 35 gt x NDT 35 8 4 375 x NDT 5 gt LDP 5 5 10 STZ 162 gt x NDT 162 8 20 25 gt x NDT 21 gt LDP 5 21 26 STZ 240 gt x NDT 240 8 30 0 gt x NDT 30 gt LDP 5 30 35 BitO O noerror 1 error message in normal operation Bit 0 0 Bit 1 0 internal information Bit 2 1 internal information Bit 3 0 strong receiver signal 1 weak receiver signal Bit 4 5 free Bit 6 O object in the measurement field 1 all light paths unobstructed Bit7 0 internal Information In case of an error message Bit 0 1 Bit 1 5 error number Bit 6 7 free SCAN Leuze 3 6 In case of an error message the error number determines the contents of the usable data Error numbers 0 30 Usable data NDT 1 byte with an indication of the error location LOC Error numbers 31 Usable data NDT max 250 bytebyte with copyright message STZ Beam number 1 240 NDT error message bit 0 only beam data beam 1 LSBit byte1 beam 240 MSBit byte30 in block x 0 beam interrupted 1 beam unobstructed Example STZ 35 gt 5 bytes of beam data NDT XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX 0000
4. a Leuze SCAN Measuring Light Curtain Connecting and Operating Instructions 601520 02 06 Subject to change without prior notice Notes on using these connecting and operating instructions These connecting and operating instructions contain information regarding the proper and effective use of SCAN light curtains It is included in the scope of delivery Safety notes and warnings are designated by the symbol Leuze lumiflex GmbH Co KG is not liable for damage resulting from improper use of its equipment Familiarity with these instructions constitutes part of the knowledge required for proper use Reprint and reproduction in whole or in part only with the explicit permission of Leuze lumiflex GmbH Co KG LiebigstraBe 4 D 82256 F rstenfeldbruck Tel 49 8141 5350 0 Fax 49 8141 5350 190 E Mail lumiflex 9 leuze com http Awww leuze de 2 SCAN Leuze Table o Oo 10 Leuze of Contents System Overview and Range of Applications 0 0 0 0 lesen 4 1 3 System OVOIVIBW cesaessrTksixanh ERR CR E RR Rr mk FORE EORR T aw e e dob a RR he d s 4 15 2 Range Of ADPICAONS cessas ee ceo ma eka ee REOR RO E ek celsa Ee we 5 Safety NOES ueusues ess e wk Ra Semaine ee RobdwR KORG RW ER b Rodi a e d RR dU 6 Configuration and Function suslsslsssseeeele eee 6 31 System Configuration llnsess s RGARRERERRRERERGORRGR KR eos samen ne RAGAK RR RR RE 6 De FUNCION Sin W
5. ad The power supply must exhibit a safe mains separation in accordance with IEC 60742 and be able to bridge short term mains failures of up to 20 ms 5 2 Electrical Connections and Terminal Assignment The connections are made using shielded connecting cables with M12 connectors available as accessories There are two possible types of connection Either the transmitter and receiver can be connected to the control cabinet via separate cables M12 plug at one end or they can be joined via an M12 Y distributor and then connected to the control cabinet by means of a joint connecting cable see Accesso ries The shield must be connected to PE The cables must be laid separately from mains power cables The following tables show the terminal assignments of the transmitter and receiver SCAN Transmitter SCAN Receiver M12 Wire color Meaning M12 Wire color Meaning Con Con nector nector 1 white 24V DC 1 white 24V DC 2 brown PE 2 brown PE 3 green 0v 3 green OV 4 yellow free 4 yellow Switch output 5 grey free 5 grey Weak signal Failure 6 pink free 6 pink RS 485 7 blue free 7 blue RS 485 8 Protective shield PE 8 Protective shield PE Leuze SCAN 13 5 2 1 SCAN as a Switching Light Curtain in Stand alone Operation 5 2 2 14 Qoom Fig SCAN transmitter SCAN receiver white at 24V DC green at OV e f g pnp 100mA max shield PE at control cabinet ground pnp switch output PLC in
6. aggregate signal at the switch output or as a single measurement value within a serial data stream via the RS 485 interface of the receiver 3 3 Display Elements SCAN receiver Vor AnschluB Betriebsanleitung hen Pay attention to manual prior to installation failure a Objectin the measurement field or device out of alignment b Measurement field unobstructed c Failure in the receiver d Supply voltage Transmitter on e Failure in the transmitter Fig 3 Display Elements 3 4 Switch Output Measurement Field Status The short circuit proof 24V DC pnp switch output on the receiver is able to switch earthed loads of up to 0 1 A Contactors or relays must be wired parallel to the coil with suitable components for suppressing interference Leuze SCAN 7 3 5 RS 485 Data Interface The signal statuses of the individual light axes light path unobstructed or light path interrupted are transmitted as a serial data stream over the RS 485 interface The transmission takes place in half duplex mode at 19 200 baud in the Leuze lumiflex specific protocol described below The data packet cyclically transmitted by the receiver is configured as follows Start identifier STK 1 byte Length of the entire packet LDP 1 byte Status STA 1 byte Beam number STZ 1 byte Usable data light path unobstructed NDT 1 30 byte CRC 8 Bit CRC 1 byte Description STK start identifier constant
7. ee end When a data packet has been successfully received the driver program sets the marker M Userbuffer ready Since this marker can be deleted by the user program after the measurement values have been read in it can be used to control the data receiption Leuze SCAN 9 3 7 10 The entire memory area of the PLC is availabe to the user program with the exception of the variable memory VBO VB50 and the marker bit MO O port 0 user subprogram program 0 initialization interrupt interrupt routine 1 routine 0 data buffer VB1 determine length 6 header of data packet gt VB20 usable read access data write access CRC Fig 4 Software module for data acceptance by the Siemens Simatic S7 200 Contamination and Error Signal Output This pnp output normally carries 24V DC In case of a weak receiver signal caused by contamination or misalignment or in case of a fault this output is switched to high resistance The output is short circuit proof and can carry up to 70 mA SCAN Leuze 4 Mounting 4 1 Standard Mounting SCAN units are mounted by means of through holes in the profile end pieces For the distance between holes see the dimensional table on page 17 and the dimensional drawing on page 18 The holes have a diameter of 5 3 mm This fixed mounting method is appropriate only when no adjustment is required i e the mounting sur
8. ers Type Standard Master Slave ST30 900 641309 642309 643309 SR30 900 644309 645309 646309 ST30 1050 641310 642310 643310 SR30 1050 644310 645310 646310 ST30 1200 641312 642312 643312 SR30 1200 644312 645312 646312 ST30 1350 641313 642313 643313 SR30 1350 644313 645313 646313 ST30 1500 641315 642315 643315 SR30 1500 644315 645315 646315 ST30 1650 641316 642316 643316 SR30 1650 644316 645316 646316 ST30 1800 641318 642318 643318 SR30 1800 644318 645318 646318 other measurement heights up to 3000 mm upon request Accessories SCAN Protective Mounting Profile The snap open profile offers additional protection and variable possibilities for moun ting using either a standard mounting bracket or a swivelling mounting support a _ SCAN protective mounting profile b SCAN Fig 11 Dimensional Drawing of SCAN Protective Mounting Profile For the dimensions of B see dimensional table on page 17 18 SCAN Leuze Order numbers Type Order No Driver program for the S7 200 control on 3 5 diskette 601120 Connecting cable M12 plug socket at each end length 0 5 m 548501 Connecting cable M12 plug socket at each end length 2 m 548502 Connecting cable M12 plug socket at each end length 5 m 1 548505 Connecting cable M12 plug socket at each end length 10 m 1 548510 M12 Y distributor for joining
9. faces are located in one plane and the mounting positions are at the same height Mounting surface Screw M5 Washer Nut M5 Qocmv Fig 5 SCAN Standard Mounting using Through Holes in the End Pieces Leuze lumifiex SCAN 11 4 2 12 Mounting SCAN with the Protective Mounting Profile To provide additional mechanical protection the SCAN can be snapped into a protective mounting profile This is recommended for larger measurement heights and when the units need to be adjustable The protective mounting profile can be used with either a standard mounting bracket or a swivelling mounting support with vibration damping Standard Mounting Bracket Swivelling Mounting Support with Vibration Damping Swivelling range 8 SCAN with Protective Mounting Profile a Fig 6 SCAN protective mounting profile Lengthwise groove for freely positionable M6 sliding brackets Slot 13 x 6 swivelling angle dfa giii EHEHE es Bl 113 r dE i eda f 30 QA SJAL Mounting using the SCAN Protective Mounting Profile SCAN Leuze 5 Electrical Installation 5 1 Supply Voltage The transmitter and receiver must be supplied with 24V DC 20 The maximum power consumption is 150 mA without lo
10. feldbruck Germany that the following described device complies with the appropriate EC Directive based on its design and type as brought into circulation by us In case of alternations of the device not agreed upon by us this declaration will lose its validity Description of the component Measur ng Light Curtain Component Type SCAN Ser al number see type plates Applicable directives and standards EC Directive of Electromagnetic Compability 89 336 EEC as amended by 91 263 EEC 92 31 EEC and 93 68 EEC Employed standards EN 60204 1 1998 EN 60825 1 1994 A1 2002 A2 2001 CE marking The compliance with the directive 89 336 EEC is certified by the CE mark ppa Werner Lehner M Director product management Leuze lumifiex GmbH Co KG Postbank M nchen BLZ 700 100 80 Kio 185 734 807 Kornranditgeselischafl Sitz F rstenfeldbruck I NAM BIC PBNKDEFF IBAN DE 770010080 0105734807 Amsgench Munchen HRA 40417 ors Hatende 87256 Furster UGK sellschatt nu Deutsche Bank BLZ 700 70010 to 1972 900 SORTE Aire TUE id uroocraooo pae kene GueratennngeGrtt Ove E Mail lumifiex leuze de USTAD Nr DE 8134 60650 j Geschatisfunrer Dr Harald Gr bel Michae H iue inei de Steuer Nr 11767 05708 Finarsctint Fisioa a
11. ie books wr ora dks bacc oa appetat o ul scd adc di te toe barking Rd 7 2 9 Display Elements scccccusaguseanncewaw x a ERA RU REA AKA A RR RR AA A EON A CRT RE 7 3 4 Switch Output Measurement Field Status 0 0 0 0 cece eee 7 95 MS AGS Dale Interface ok fib Ix ve eee EORR ERR REOR Eh ee ee RC RR awe 8 3 6 Driver Program for the PLC Control e g Siemens S7 200 000 9 3 7 Contamination and Error Signal Output iseoess eee ahh a 10 Lb MEME cC It 11 41 Standard Mounting Lsisssae ees ida RR RR E RR Ra EAR RR mro o 11 4 2 Mounting SCAN with the Protective Mounting Profile llle esses 12 Electrical Installation suususlueesseee eR IIR 13 SA Supply Vlaga iuzeaaaswwauacaux e d RR RC RUNE RONDE d Ra cb a RR e DR A 13 5 2 Electrical Connections and Terminal Assignment 0 0 000000000000 13 cuc MP 15 Uleaning isses kRRRERRAR ERE RRERRAd ARRA ERE TEASE EC eed dua REA RR RR ddduo ei ES 15 Technical Data and Dimensional Drawings see esl ee eee ee 15 Selection and Ordering Information sulslslllle llle llllen 19 93 Device Desid allOn z siu ecex o enean xa ao eae QE Eo E E D RR PR eaa 19 9 2 Order Numbers and Accessories iiliissssesseee e nen 19 Declaration of Confirmily cc0 cecs ose maa 3a kh RR eens Fee aa 22 SCAN 3 1 1 System Overview and Range of Applications System Overview SCAN light curtains consist of a transmitte
12. of sequentially controlled IR radiation elements aligned in a row and a receiver equipped with a number of sequentially controlled receiver elements likewise aligned in a row The parallel light axes projected between the transmitter and receiver create a measure ment field with a resolution of 30 mm In order to achieve linked measurement fields for different geometric planes SCAN master and slave units can be switched in succes sion by means of a plug in connector cable The receiver has a switch output for performing simple detection tasks as well as a serial data interface for transmitting measurement values to a control system for further processing A driver program is available that enables SCAN to be connected directly to the Siemens S7 200 Drivers for controls from other manufacturers can be produced upon request Figure 3 shows the system configuration of SCAN in both its standard design and its master slave version a a _ SCAN transmitter f OV b SCAN receiver g RS 485 C 24VDC h _ SCAN transmitter master d OV i SCAN transmitter slave e 24V DC Fig 2 SCAN Standard Configuration or Master Slave Version SCAN Leuze 3 2 Function After the supply voltage is applied the infrared light axes are controlled and evaluated individually in quick succession The measurement value of each light axis light path unobstructed or light path interrupted is output either as an
13. put SCAN as a Switching Light Curtain in Stand alone Operation SCAN as a Measuring Light Curtain with the Siemens S7 200 p apg Fig L SCAN transmitter SCAN receiver M12 Y distributor white at 24V DC green at 0 V grey weak signal error at PLC input 22 d e pink RS 485 at PLC RS 485 Pin 3 blue RS 485 at PLC RS 485 Pin 8 shield PE at PLC RS 485 Pin 1 PLC SCAN as a Measuring Light Curtain in Combination with the Siemens S7 200 SCAN Leuze Start up Before switching on the unit for the first time check the supply voltage 24V DC 20 Turn on the supply voltage transmitter LED power lights up A self test lasting approx 2 sec will be performed in the transmitter and receiver In case of optimal alignment only the green LED in the receiver will still be lit up If the green LED does not light up after 2 seconds please check the following points Make sure that there is no object in the sensing zone If so remove the object Check the orientation of the units to each other Transmitter and receiver must be mounted at the same height and the front screens must be exactly parallel to each other If the failure LED lights up in the transmitter or receiver the corresponding component has an internal defect and must be replaced For operation with Simatic S7 200 To activate the freely programmable comm
14. r and a receiver Like a light barrier they work with modulated infrared light and stand out due to the following features Measurement field up to 6 m wide from 900 to 3000 mm high 30 mm resolution at every position of the measurement field Can be connected directly to an PLC control such as the Siemens S7 200 PNP switch output for measurement field status free occupied Simple connection due to M12 connector Contamination and error signal output to the PLC Extremely small design cross section 17 mm x 33 mm SCAN Leuze 1 2 Range of Applications The scope of SCAN applications ranges from simple detection or measuring tasks such as controlling projection or the presence of an object to contour or shape recognition Overhang control 7 Customer machine Measuring of widths control gt Ze 3 Loop control P Hole detection J P d gt Oo J oS AZ S 87 200 Measuring of distance Shape evaluation 57 200 A E Y 7 200 A Fig 1 Examples of Applications Using the Measuring Light Curtain SCAN Leuze SCAN 5 3 1 Safety Notes SCAN light curtains are not active optoelectronic protective devices AOPD in accordance with IEC 61496 1 2 and are thus not suited for personnel protection Configuration and Function System Configuration SCAN light curtains consist of a transmitter equipped with a number
15. rcuit proof 100 mA max Contamination error signal output pnp output short circuit proof 70 mA max Data interface Receiver RS 485 19 200 baud half duplex mode Electrical connection 8 pin round M12 plug in connector Connecting cable 7 pin 0 25 mm shielded with injection molded connector length 5 m or 15 m see Accessories Dimensions Cross section 17 mm x 33 mm Length with connector and connecting area measurement height 96 mm Humidity 15 95 non condensing Storage temperature 25 75 C other measurement heights up to 3000 mm upon request Dimensions Weights and Scanning Times of the SCAN light curtains Device Type Protecting Dim B Mounting Dim Weight Time Scan height Dim A mm a mm kg ms mm 30 150 170 5 248 5 238 5 0 156 7 2 30 225 245 5 323 5 313 5 0 198 10 8 S30 300 320 5 398 5 388 5 0 24 14 6 30 450 470 5 548 5 538 5 0 324 10 8 S30 600 620 5 698 5 688 5 0 408 14 4 830 750 770 5 848 5 838 5 0 492 18 30 900 920 5 998 5 988 5 0 576 14 4 S30 1050 1070 5 1148 5 1138 5 0 66 16 8 30 1200 1220 5 1298 5 1288 5 0 745 19 2 30 1350 1370 5 1448 5 1438 5 0 83 21 6 30 1500 1520 5 1598 5 1588 5 0 913 24 30 1650 1670 5 1748 5 1738 5 0 997 26 4 S30 1800 1820 5 1898 5 1888 5 1 08 28 8 30 2100 2120 5 2198 5 2188 5 1 2 32 4 30 2400 2420 5 2498 5 2488 5 1 36 38 4 30
16. the transmitter and receiver cables into one common 548500 cable to the control 1 Connecting cable M12 socket at one end length 5 m 2 548405 Connecting cable M12 socket at one end length 15 m 548415 Protective mounting profile SCAN 900 426809 Protective mounting profile SCAN 1050 426810 Protective mounting profile SCAN 1200 426812 Protective mounting profile SCAN 1350 426813 Protective mounting profile SCAN 1500 426815 Protective mounting profile SCAN 1650 426816 Protective mounting profile SCAN 1800 9 426818 Mounting bracket with accessories sold in sets of two 4 5 560120 Swivelling mounting with vibration damping 4 9 560300 For wiring with a joint cable to the control cabinet are required 1 cable from the transmitter to the distributor 1 cable from the receiver to the distributor 1 cable from the distributor to the control cabinet and 1 M12 Y distributor 2 For wiring with two separate cables to the control cabinet are required 1 cable from the transmitter to the control cabinet and 1 cable from the receiver to the control cabinet 3 Other heights upon request 4 Only for use with the SCAN protective mounting profile 5 2 pieces each required for the transmitter and the receiver SCAN 21 Leuze 10 Declaration of Confirmity 4 Leuze lumiflex EC Declaration of Conformity according to EC Directive 89 336 EWG Annex I We herewith declare Leuze lumiflex GmbH Co KG Liebigstr 4 D 82256 F rsten
17. unication over Port 0 the operating mode switch must be set at RUN In the TERM position the PPI protocol for communicating with the programming device is enabled The entire memory area of the PLC except for the variable memory VBO VB50 and the marker byte MO 0 is available to the user program Cleaning The front screens must be cleaned regularly depending on the amount of dirt that has accumulated The message output of the receiver indicates at the latest when cleaning is necessary We recommend using a mild cleaning agent for cleaning the Plexiglas front screens The Plexiglas front screens are highly resistant to diluted acids and alkalies and are resistant to organic solvents to a limited extent Technical Data and Dimensional Drawings Measurement field height 900 1050 1200 1350 1500 1800 mm Measurement field width range 0 3 6m Resolution 30 mm Number of light axes 33 250 6 light axes per 150 mm measurement height Time required per light axis 200 Us Transmitter Light emitting diodes as defined by EN 60825 1 1994 A1 2002 A2 2001 1 Leuze Class Wave length 880 nm Pulse duration 7ms Pulse pause 3 12 ms Output 8 73 uW SCAN 15 Ambient operating temperature 0 55 C Protection class Supply voltage 24V DC 20 Current consumption Transmitter 75 mA receiver 75 mA Switch output pnp output short ci
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