22957673_Richtung_Geschwindigkeit_V20_e
Contents
1. cccsssseeseeeeeeeeeeeeeeeeeseeeeeeeeeeeennenens 24 4 1 The structure of the STEP Program was tecwet en ietancitenahotiehieeatid acd 24 4 2 Detailed description of the individual software blocks eeeeeeeeeeeeeeees 25 4 2 1 FB 1 Direction and Speed Detection of Moving Objects eceeeeeeeees 26 BDA FCI Drect ON acess sce cctv s Sectued steed alert eden dace ete A E e ade a aa a ae A aiaa des 30 423 EGZ Sped ern ene em ae ere eee ene eee re monn et a en re en ree 31 4 2 4 DB 11 DISPLAY amp PARAM 1 ctsoccapehensetetaeletisenteleneidrelbaiabatieeaielaeiiecdens 32 5 Modifications to the Example Program optional ssseeeeeee 33 5 1 Different BERO distances wicso ccesdeciavoeiues even yiateee saves Meeetien atl gens igueandesanionee 33 5 1 1 Loading from sample project i ctesceceslac asec sax texeeesNekaaynceduceeeedeagndaseedeth deack cave 33 5 1 2 Modifying blocks VOUISe lls sti lensecieeeccc vee etecatiass Gane dan ca dag ss ects dude tage retaraed ede 34 5 2 Changing the flicker frequency cccceeeeeeeeeeeeeeeeeeeeeeaaeeeeeeesaaeeeeesnaaeeeeenes 36 5 3 Direction and speed detection with two BEROS ccccccccesessseteeeeeeeeees 38 5 3 1 Loading from sample PFO SCs a s 2e 2 cncccecatentcete aay cease fexseina eb edetenn pexeeccumeneneneess 39 5 3 2 Modifying blocks YOUNIS Misi cr scene ees tytac andecpecacnsiad Gal acetendetsy devpodes an dek easeeeieeatotads 40 5 4 Changing the2. Name Data Type object detected Baiial Interface new T IN gt our In_out STAT 4 TEMP V1 0 01 27 06 40 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit Principles of Operation and Program Structures Modifications to the Example Program optional SIEMENS Application inductive BEROs Entry ID 22957673 Network 1 The check of the entry value has to be entered for the reset time The same restrictions as for the display duration apply Figure 5 12 Check of the entry value of the reset time JC LOZ1 TAK LOZ 5T DISPLAY amp PARAM display period fdisplay period 0 DISPLAYSPARAM reset time reset_time LO31 60 LO41 DISPLAYSPARAM reset time reset_time L 9 990000e 001 L DISPLAYSPARAM BERO distance BERO distance ABS Network 3 Delete the complete network Positive Edge at BERO 2 and insert the Reset Detection Tags network instead V1 0 01 27 06 41 55 SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Figure 5 13 Network 3 Reset Detection Tags Network 3 Reset Detection Tags IBERO1 object detected and BERO3 object_detected are reset if the
3. This application is realized in a STEP7 project It is to meet the requirements listed below Sensor requirements e Metallic objects material to be conveyed which are to be conveyed past the sensors are to be detected by them If an object comes into the detection range of a sensor this causes a signal change from 0 to 1 at the switching output of the sensor e The sensors are to be designed as inductive proximity switches BEROs Controller requirements e Using the sensor signals direction and speed of the material to be conveyed are to be determined if the conveyor section is switched on e Each object detection is to be provided with a time stamp e Depending on the last determined current direction a corresponding digital output is to be controlled flashing 01 27 06 8 55 SI E M E N S Application Description Automation Problem Application inductive BEROs Entry ID 22957673 e f no further object passes all three sensors within a variable time after an object detection the displays on the HMI direction display speed and the respective digital output flashing direction display of the controller are to be reset HMI requirements e The HMlis to be realized by a touch panel screen diagonal 6 inches e The following information is to be displayed V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun The direction of the material to be conveyed f
4. direction and speed detection functionality is also complied with without visualization V1 0 01 27 06 19 55 Application Description Automation Solution SIEMENS Application inductive BEROs Entry ID 22957673 2 4 Performance data Sensors V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Table 2 4 Data of the proximity switch 3RG4038 3CD00 Sn Feature Data notes Comment Operating voltage 15 34 V DC Max 30 mA 24 V No load supply current lo Max 40 mA 34 V Rated operational 200 mA lt 50 C current le 150 mA lt 85 C Enclosure material Molded plastic Design Cubic 40 mm x 40 mm 4 lines connector M12 Colors connection lines Connections 1 gt Plus Brown 3 gt Mass Blue 4 gt Signal make contact Black element Switching type PNP LED green gt Power supply DISpidy LED yellow gt Switching status Rated operating distance 15 mm 10 Buttability 75 mm center to center Otherwise mutual disturbance possible Switching frequency f 50 Hz Repeat accuracy R 0 75 mm Power up delay t 100 ms Degree of protection IP 67 Operating temperature 25 C to 85 C 01 27 06 20 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Application Description Automation Solution Application inductive BEROs Entr
5. Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Warranty liability and support Application inductive BEROs Note Entry ID 22957673 The application examples are not binding and do not claim to be complete regarding the circuits shown equipping and any eventuality The application examples do not represent customer specific solutions They are only intended to pro vide support for typical applications You are responsible in ensuring that the de scribed products are correctly used These application examples do not relieve you of the responsibility in safely and professionally using installing operating and servicing equipment When using these application examples you recognize that Siemens cannot be made liable for any damage claims beyond the liability clause described We reserve the right to make changes to these application examples at any time without prior notice If there are any deviations between the recommendations provided in these application examples and other Siemens publications e g Catalogs then the contents of the other documents have priority Warranty liability and support We do not accept any liability for the information contained in this document Any claims against us based on whatever legal reason resulting from the use of the examples information programs engineering and performance data etc described in this application
6. SIEMENS Structure Configuration and Operation of the Application Installation and Startup Application inductive BEROs Entry ID 22957673 Loading the application software to the CPU Table 6 2 Loading the application software to the CPU No Instruction Note 1 Set the PG PC interface In the control panel of your Set PG PC Interface development system open the Set PG PC Interface dialog box If the interface has already been set continue with point 5 2 Select the following settings Set PG PC Interface xj e Access Point of the Application Access Path alee oa E P7 gt Access Point of the Application S70NLINE STEP gt CP5611 MPI x V gs Parameter Assignment Standard for STEP 7 sed Interface Parameter Assignment Used The iui aeonda CP5611 MPI lt Actives Properties n n the aeaa ane used ME CESSI iAuto Pee Copy If the above access point is not Delete included in the list box create it via the lt Ada Delete gt entry Parameter assignment of your also in the Access Point of the cece processor CP5611 for an Application list box vitae A Interfaces Then click the Properties button iane a Cancel Help 3 Enter the MPI address of the xi development system in this application the address 0 and the other bus parameters as shown in Station Parameters the figur
7. conveyor_on E0 5 0 the displayed speed value DISPLAY amp PARAM speed is overwritten with 0 000 and the block is exited If the above condition is not complied with which means that an object has just passed either BERO 1 in reverse or BERO 3 in forward direction FC34 is used to determine the time difference from the time stamps of the two last passed BEROs DB timestamp_stop timestamp_start This time difference is in the TIME format and it is subsequently converted to seconds The speed displayed on the Information HMI screen is the quotient of the converted from cm to m BERO distance DISPLAY amp PARAM BERO_distance which can be entered by the user in the Parameters HMI screen and the above time difference V1 0 01 27 06 31 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program Application inductive BEROs Entry ID 22957673 4 2 4 DB 11 DISPLAY amp PARAM The figure below shows the correlation between the data in DB 11 and the HMI screens Figure 4 2 Data of DB11 DISPLAY amp PARAM in the HMI screens Direction forvard timestamp fud Last Registration forward E 03 01 2006 11 45 18 reverse R 03 01 2006 11 10 37 reverse timestamp rew conveyor section Con E actual speed m s Speed D
8. start screen TP 170A Parameters screen Figure 2 4 Parameters screen SIMATIC PANEL Parameters Sensor Distance cm 29 0 Display Period sec 5 Use the parameters button in the start screen to display the Parameters screen When selecting touching the respective I O box a numerical keyboard is displayed on the screen with which you can enter the desired value and apply it using the Enter key 1 Sensor Distance Enter the distance between the BEROs according to Figure 1 2 The application can operate with values between 0 0 and 99 9 Negative values are converted to positive values when entered Values gt 99 9 are limited to 99 9 2 Display Period You enter the time after which a direction and or speed display is to be reset on the display The application can operate with values between 0 and 60 Negative values are converted to positive values when entered Values gt 60 are limited to 60 Use the back button located at the bottom of the display to return to the start screen V1 0 01 27 06 14 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Application Description Automation Solution Application inductive BEROs Entry ID 22957673 LED displays Aside from the visualization on the TP170A the last detected direction is indicated by optional flickering fast flashing by
9. www ad siemens de support 2 Reference to this entry http support automation siemens com WW view en 22957673 3 Operating Instructions 7 300 CPU 31xC and CPU 31x Installation http support automation siemens com WW view en 13008499 4 _ Operating Instructions TP 170micro TP 170A TP 170B OP 170B WinCC flexible http support automation siemens com WW view en 19082123 5 User s manual WinCC flexible 2005 Compact Standard Advanced http support automation siemens com WW view en 18796010 6 FAQ 1070096 Which connectors and cables do need to connect an OP PG to an S7 controller Is there a standard cable http support automation siemens com WW view en 1070096 7 _ FAQ 21953245 Service Pack 3 for STEP 7 V5 3 and STEP 7 Professional Edition 2004 http support automation siemens com WW view en 21953245 V1 0 01 27 06 54 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Appendix and Literature Literature Application inductive BEROs Entry ID 22957673 7 2 Further literature This list is by no means complete and only provides a selection of appropriate sources Table 7 2 Further literature Title 8 Hans Berger Automating with STEP7 in STL and SCL Publicis Corporate Publishing ISBN 3 89578 242 4 Book presentation http books publicis erlangen de en produkte
10. SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 5 3 2 Modifying blocks yourself Alternatively you can also use the instructions below to modify the blocks step by step starting from the program and the Equ_ Dist HMI configuration Proceed as follows 1 Enter the reset_time for DB11 Figure 5 10 Change in DB11 DISPLAY amp PARAM 32 0 release_direction BOOL release speed eoor FALSE i 340 reset_time mr js piemin this period the second BERO must be reached sec e 2 Make the following extensions changes in FB1 Declaration table Delete the static variable BERO2_object_detectea Define the temporary variable object_detected Figure 5 11 Changes in the FB1 declaration table Contents Of Environnenti Interface STAT Data Type Cor Interface T IN Ge out FPZ Bool BE FP3 Bool BE JE STAT PFL Bool BE 4 TEMP PFZ Bool BE PF3 Bool BE cony_temp off Bool delete sat sat sat no_object no DIR update dis SPEED update spt E cmveror on oia Bool _ timestamp start Date And Time dui E reset tine saved estime Q Contents Of Environment Interi
11. configuration also changes We offer you two types of program change 1 Loading from sample project 2 Modifying blocks yourself 5 1 1 Loading from sample project The program with the modified blocks is located in the Diff_Dist program folder of the STEP7 project 1 Copy the entire content of Diff_Dist to the S7 program program folder in the SIMATIC station 2 Load the entire station to the CPU to avoid inconsistencies we recommend loading the complete station or at least all user blocks and not only the modified blocks 3 Load the WinCC flexible project which is also named Diff_Dist to the touch panel V 1 0 01 27 06 33 55 SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional Application inductive BEROs Entry ID 22957673 Modifying blocks yourself Alternatively you can also use the instructions below to modify the blocks step by step starting from the program and the Equ_Dist HMI configuration Proceed as follows 4 Enter a second BERO distance for DB11 V20_e doc Figure 5 1 Change in DB11 DISPLAY amp PARAM equal BERO distances 422 0 spare ARRAY 1 4 426 0 BERO_ distance REAL 2 000000e 001 distance between BERO1 3 and BEROZ different BERO distances 2Z 0 BERO_ distance 12 REAL Z 500000e 001 distance between BERO1 and BEROZ 26 0 BERO distance 23 REAL 2 500000e 001 distance between BEROZ and B
12. description refers to the STEP7 project of which all symbols and comments were created in English To provide a clear reference to the program code headings variable names etc were not translated in the following sections The blocks not described in the following are self explanatory when viewing their program code The brief information in the above table provides an adequate explanation V1 0 01 27 06 25 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program Application inductive BEROs Entry ID 22957673 4 2 1 FB 1 Direction and Speed Detection of Moving Objects The block has 9 networks Table 4 2 Detailed description of FB 1 NW 1 Explanation Parameter Check e The value for the display duration DISPLAY amp PARAM display_period to be entered in the Parameters HMI screen is checked for plausibility If the value is negative the sign is truncated by two s complement generation If the value gt 60 sec the value is limited to 60 e The value for the BERO distance DISPLAY amp PARAM BERO_distance to be entered in the Parameters HMI screen is checked for plausibility If the value is negative the sign is truncated ABS command If the value gt 99 9 cm the value is limited to 99 9 The values possibly changed as described ab
13. e the detection ID for BERO 3 DB BERO3_object_detected is set 6 Call FC1 Detecting Direction The block for the direction detection is called if the user has given the respective enable DISPLAY amp PARAM release_direction in the Releases HMI screen and if the corresponding update ID IDB DIR_update was set in network 4 or 5 When removing the enable the direction displays DISPLAY amp PARAM forward reverse on the Information HMI screen are reset immediately V1 0 01 27 06 28 55 SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 NW Explanation 7 Call FC2 Calculating Speed The block for the speed detection is called if the user has given the respective enable DISPLAY amp PARAM release_speed in the Releases HMI screen and if the corresponding update ID DB SPEED_update was set in network 4 or 5 When removing the enable the speed display DISPLAY amp PARAM speed on the Information HMI screen is immediately overwritten with 0 000 8 No Speed Detecting with Conveyor Stop If the conveyor is switched off or disturbed conveyor_on E0 5 0 while the object is located between two BEROs of the measuring device thus if the detecti
14. next measurement etc The measuring device falls out of step A correction would only be possible by correctly passing an object in direction A at least once Solution principle The problem can be decisively improved by defining a maximum time required by the object for moving from the first to the second BERO If the object does not arrive at the second BERO within this time the program resets the detection ID of the first BERO The measuring device is again in its initial status However the time rundown has to be interrupted if the conveyor stops and it has to be restarted with the remaining time if the conveyor continues to run Changes The modified functionality requires that the blocks FB1 DB1 and DB11 are changed Since the user has to specify a maximum time reset time the HMI configuration also changes We offer you two types of program change 1 Loading from sample project 2 Modifying blocks yourself 5 3 1 Loading from sample project The program with the modified blocks is located in the 2BEROs program folder of the STEP7 project 1 Copy the entire content of 2BEROs to the S7 program program folder in the SIMATIC station 2 Load the entire station to the CPU to avoid inconsistencies we recommend loading the complete station or at least all user blocks and not only the modified blocks 3 Load the WinCC flexible project which is also named 2BEROs to the touch panel V 1 0 01 27 06 39 55
15. the object only has to be detected by two sensors Furthermore the following case has to be handled by additional software e 3BEROs The object moves in direction A and has already passed two BEROs e g BERO 1 and BERO 2 Then the object disappears is removed from the belt An object now passes the three BEROs in direction B The BERO first passed by this object e g BERO 3 is interpreted as third passed BERO of direction A As a result direction and speed are 01 27 06 38 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Principles of Operation and Program Structures Modifications to the Example Program optional Application inductive BEROs Entry ID 22957673 once displayed incorrectly tolerable After passing the second and third BERO there is no display and the initial status for further correct measurements is restored e 2BEROs The object moves in direction A and has passed the first BERO e g BERO 1 Then the object disappears is removed from the belt An object now passes the measuring device in direction B The BERO first passed by this object e g BERO 3 is interpreted as second passed BERO of direction A As a result direction and speed as above are displayed incorrectly However since there is no medium BERO for resetting the measuring device the passing of the second BERO BERO1 is already interpreted as start event for the
16. 20_e doc g_Geschwindigkeit 22957673_Richtun SI EM ENS Foreword Application inductive BEROs Entry ID 22957673 Table of Contents Application Description sssssssnnnesennnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn nnnnnnnnnnn nnana 6 1 Automation Problem s ssssssssesseunnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn ennnen 6 1 1 ONIBETE EE EE E E EE 6 1 2 Re uire ments i ne ea ea EEE A ai a aAa AA EAA a e eaa SaS 8 2 Automation Solution s assssnnnsnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn nnne 10 2 1 Overview of the overall solution sssssssssssrneesseresserrrrrennrrssrrrnsserrnnnnrennnesene 10 2 2 Description of the core functionality sa cccceccsiscrccterccserere itn escsednaiernchinbeneeee 11 2 2 1 Overview and description of the user interface ssseessseesssrrnerrreresrrrrseee 11 2 2 2 Sequence of the main functionality s seeesenneessenenseenreerenneeserrrnrrrnnresrrrrseet 15 2 3 Required hardware and software Components eeceeeeeeeeeeeeeeeeeeeeeeeees 17 2 4 P rformance dat ase an esio enaa a a a a r 20 Principles of Operation and Program Structures c ecccesesseeeeeseeeeeeeneeeeeeeneeeees 22 3 General Function Mechanisms s seccccesseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseneeeeeeeees 22 3 1 Basics on inductive SENSOMS isco sticcelevevendeinccendeneeds eueaneiaeieeaaetieereineeiee 22 4 Explanations on the Example Program
17. 4 Positive Edge at BERO 1 If BERO 1 detects a positive edge the object ID DB no_object is reset and the following procedure takes place If no edge is detected a jump to the next network occurs If the object has already passed BERO 3 and BERO 2 IDB BERO3_object_detected BERO2_object_detected e the timer for the display duration is started e the update ID for the direction DB D R_update is set e the update ID for the speed is set DB SPEED_update provided that the conveyor was not switched off or disturbed IDB conv_temp_off while the object was moving from BERO 2 to BERO 1 If the conveyor was interrupted the running ID IDB conv_temp_off is reset e the time stamp used as target for the speed measurement DB time stamp_stop is written into the instance DB e the detection ID for BERO 1 DB BERO1_object_detected is set e the detection IDs for BERO 3 and BERO 2 IDB BERO3_object_detected BERO2_object_detected are reset If the object has passed BERO 2 but not BERO 3 e the detection IDs for BERO 2 IDB BERO2_object_detected are reset If the object has passed BERO 3 but not BERO 2 e the detection IDs for BERO 3 IDB BERO3_object_detected are reset e the detection ID for BERO 1 DB BERO1_object_detected is set V1 0 01 27 06 27 55 SI E M E N S Principles of Operation and Program Structures Explanations o
18. 957673 1 releases Use this button to branch to the Releases screen for the enable disable of the direction and speed display 2 parameters Use this button to branch to the Parameters screen for defining the sensor distances and the display duration 3 stop runtime Use this button to terminate the application on the touch panel and to call its start menu TP 170A Releases screen Figure 2 3 Releases screen SIMATIC PANEL Releases Direction Detection enable disable enabled Speed Detection Use the releases button in the start screen to display the Releases screen 1 Direction Detection Use the enable disable button to activate or deactivate the direction detection The box to the right of the button displays the selected mode and is identical to the corresponding display in the start screen 2 Speed Detection Use the enable disable button to activate or deactivate the speed detection The box to the right of the button displays the selected mode and is identical to the corresponding display in the start screen V1 0 01 27 06 13 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Application Description Automation Solution Application inductive BEROs Entry ID 22957673 Use the back button located at the bottom of the display to return to the
19. ABLE PUR BLACK 4 X 0 34MM2 3 3RX8000 0CE42 1AF0O Or equivalent component g_Geschwindigkeit Standard software components Table 2 2 Standard software components Component No MLFB Order number Note Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SIMATIC S7 STEP7 V5 3 FLOATING LICENSE FOR 1 USER E SW SW AND DOCU ON CD LICENSE KEY ON FD CLASS A 5 LANGUAGES G E F 1 S EXECUTABLE UNDER WIN2000PROF XPPROF REFERENCE HW S7 300 400 C7 1 6ES7810 4CC07 0YA5 For sources for Service Pack 3 see 71 WINCC FLEXIBLE 2005 COMPACT ENGINEERING SW FLOATING LICENSE LICENSE KEY ON FD SW AND DOCUMENTATION ON CD IN GER EN IT FR SP EXEC UNDER WIN2000 XPPROF FOR CONFIGURATION OF SIMATIC PANELS UPTO SERIES 170 1 6AV6611 0AA01 1CA5 TP170A requires at least WinCC flexible Compact 01 27 06 18 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun g_Geschwindigkeit V20_e doc SIEMENS Application Description Automation Solution Application inductive BEROs Entry ID 22957673 Example files and projects The following list contains all files and projects used in this example Table 2 3 Example files and projects Component Note BIDxyz_Richtg_Geschw_V20_e zip This zip file contains the STEP 7 project Note The visualization with the aid of a touch panel is integrated in the STEP7 project The
20. AIL L 480MM SIMATIC S7 300 1 6ES7307 1BA00 0AA0 Or similar power LOAD POWER SUPP supply PS 307 AC 120 230V DC 24V 2A neal eke 1 6ES7314 6CF02 0ABO The compact COMPACT version was only used because of the integrated DO DI SIMATIC S7 6ES7953 8LF 11 0AA0 Or larger MICRO MEMORY CARD F S7 300 C7 ET 200S IM151 CPU 3 3 V NFLASH 64 KBYTE SIMATIC 57 300 6ES7392 1AMO00 0AA0 Also available with FRONT CONNECTOR 392 WITH SCREW CONTACTS 40 PIN spring contacts Sau aL ss 1 6AV6545 0BA15 2AX0 Configurable with STN DISPLAY ProTool Lite from MPI PROFIBUS DP version V5 2 SP1 INTERFACE and WinCC flexible Compact from version 2004 V1 0 01 27 06 17 55 SIEMENS Application Description Automation Solution Application inductive BEROs Component SIMATIC NET CONN CABLE 830 2 F PROFIBUS PREASSEMBLED CABLE WITH 2 SUB D CONNECTORS 9 POLE SWITCHABLE TERMINATING RESISTORS 3 M Entry ID 22957673 No MLFB Order number Note 1 6XV1830 2AH30 2 wire shielded cable with PROFIBUS connectors for connecting the TP 170A to the CPU For alternatives see 6 PROXIMITY SWITCH BERO CUBIC 40 MM X 40 MM INDUCTIVE 15 34 V DC SN 15 MM FLUSH NO NC 200 MA PNP 4 WIRE MOLD PLASTIC SHORTY SENSOR ADJUSTABLE IN 5 DIR WITH M12 CONN ROTATABLE IP67 3 3RG4038 3CD00 Or equivalent inductive proximity switch V20_e doc M12 ANGLED CABLE PLUG 4 POL WITH 5M C
21. EROS Insert IN parameters for the BERO detection IDs of the two directions in FC2 and change the FC2 program code Figure 5 2 Changes in FC2 SPEED g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun FC2 Declaration Table Contents Of Environment Inter face IN Nome Bata Type BEROL object _detected Bool BERO3_object_detected Bool ta Interface SEn EIN i bE no object BER0l_object_detected LP OUT H IN_OUT HE TEMP H RETURN FC2 Program Code abridged time_difference ffconvert from TIME to sec 1 000000e 003 time in sec BERO1 object detected ffobject moves reverse LOZ1 DISPLAYSPARAM BERO distance 12 L031 BER03_object_detected DISPLAYSPARAM BERO distance 23 BERO_ distance 1 000000e 002 ffoonvert from cm to m itime_in_sec f fspeed path time DISPLAY4 PARAM speed 01 27 06 34 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit Principles of Operation and Program Structures Modifications to the Example Program optional SIEMENS Application inductive BEROs Entry ID 22957673 6 Make the following changes in FB1 Network 1 The check of the entry value has to be entered for the second BERO distance Figure 5 3 Check of the entry value for the second BERO distance LOZ1 T DISPLAY amp PARAM display peri
22. Operation of the Application Installation and Startup Application inductive BEROs Table 6 4 Proof of serviceability of the application Entry ID 22957673 No Instruction Reaction The HMI start screen shows the TER rn entries on the right rection ast Registration forward J reverse E conveyor section OFF actual speed m s Direction Detection Speed Detection parameters stop runtime 2 Set the CPU to RUN The two time stamps show the current date date of the CPU clock 3 Switch on the conveyor section On the HMI screen conveyor section ON is displayed 4 1 Inthe start screen press the releases button to display the Releases Releases screen i 2 Enable direction and speed Erector Geterhion detection by pressing the z corresponding buttons The __enabledsable Ses respective displays then change to enabled Speed Detection 3 Press the back button aT 4 Inthe start screen enabled __erableidisable also has to be displayed for direction and speed 5 1 Inthe start screen press the P t parameters button to display rarameters the Parameters screen The values shown on the right are Sensor Distance cm displayed 20 0 2 Touch the Sensor Distance input field to go to a keyboard 3 Enter the actual BERO distance Display Period sec and complete the input with bi p p 5 4 Press the back button
23. RO 3 N a 4 positive edge at BERO 3 Y y detection flag of BERO 2 and BERO 1 Y already set y v N display forward with time stamp tero 3 Y detection flag of BERO 2 already set calculate and display speed v s t but not of BERO 1 4 vy N start retrigger display period set detection flag of BERO 3 y reset detection flags of BERO 2 and BERO 1 lt gt _ events end V1 0 01 27 06 16 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Application Description Automation Solution Application inductive BEROs Entry ID 22957673 2 3 Required hardware and software components The application was developed and tested with the following components Please consider that configuration changes in the sample project are possibly required in case of deviations from the listed components and that screen shots in this document can differ from your screen contents To realize the sample project you additionally require e PGor PC with corresponding communications processor e g CP5512 and Microsoft Windows 2000 Professional or Windows XP Professional operating system e An MPI cable Hardware components Table 2 1 Hardware components Component No MLFB Order number Note SIMATIC S7 300 1 6ES7390 1AE80 0AA0 minimum length R
24. ROS change their roles Merely the variables BERO1_object_detected and BERO3_object_detected have to be exchanged Place the return values RET_VAL of the READ_CLK calls on MW250 and MW246 Network 8 Change the No Speed Detecting with Conveyor Stop network as shown in the figure below V1 0 01 27 06 43 55 SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Figure 5 15 Modification network 8 No Speed Detecting with Conveyor Stop new A BERO object detected Xx BERO3 object detected BERO object detected BEROZ object detected BERO3 object detected delete BEROZ object detected AN conveyor on S conv temp off f conveyor temporary off BERO 2 is also not polled here 3 Save the changes in FB1and update the FB1 call in OB1 You are informed on the time stamp conflict between FB1 and DB1 Answer the question regarding a regeneration of the instance DB DB1 with Yes 4 Use WinCC flexible to complete the reset time in the Parameters HMI screen The variable to be connected is D ISPLAY amp PARAM reset_time Figure 5 16 Parameters screen with option to enter the reset time SIMATIC PANEL Parameters Sensor Distance cm 20 0 Display Per
25. Settings Fe Version Management l man Germany English United Kingdom 4 Click F to save the project and load it to the touch panel see Table 6 3 V1 0 01 27 06 45 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SI E M EN S Structure Configuration and Operation of the Application Installation and Startup Application inductive BEROs Entry ID 22957673 Structure Configuration and Operation of the Application Content This part takes you step by step through structure important configuration steps startup and operation of the application 6 Installation and Startup You are provided with information on the hardware and software you have to install and the steps necessary to start up the example 6 1 Installation of hardware and software This chapter describes which hardware and software components have to be installed The descriptions and manuals as well as delivery information included in the delivery of the respective products should be observed in any case Installation of the hardware For the hardware components please refer to Table 2 1 in chapter 2 3 All components can be supplied with 24V DC via the PS307 load power supply For the hardware configuration follow the instructions listed in the table below Table 6 1 Configuration of the hardware No Instruction Note 1 On the rail arra
26. V1 0 01 27 06 52 55 SI E M EN S Structure Configuration and Operation of the Application Installation and Startup Application inductive BEROs Entry ID 22957673 No Instruction Reaction 6 a T pass the BEROs in Direction Last Registration orward direction BERO1 BERO2 BERO3 tek Bo 26 01 2006 14 29 57 _ reverse J 01 01 2006 00 00 00 Check the speed using other means After 5 seconds direction ID and E conveyor section speed have to be reset The time Y stamp stops actual speed m s 0 752 Direction Detection Speed Detection parameters stop runtime Immediately after passing BERO 3 direction ID and current time stamp for forward and the object speed have to be displayed V20_e doc 7 Repeat point 6 with opposite object Corresponding to point 6 direction g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V1 0 01 27 06 53 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Appendix and Literature Literature Application inductive BEROs Entry ID 22957673 Appendix and Literature 7 Literature 7 1 References on hardware and software of this application This list includes documents entries referred to in this application Table 7 1 References on hardware and software of this application Title 1 _ Siemens A amp D Customer Support http
27. ansferred to DB11 DISPLAY amp PARAM timestamp_rev by means of the BLKMOV function and provided to the HMI for the Last Registration reverse display The direction display for forward DISPLAY amp PARAM forward is reset the display for reverse DISPLAY amp PARAM reverse is set If the detection ID for BERO 3 is set DB BERO3_object_detected which means that an object has just passed BERO 3 in forward direction the time stamp read out in NW5 of FC1 DB timestamp_stop is transferred to DB11 DISPLAY amp PARAM timestamp_fwd by means of the BLKMOV function and provided to the HMI for the Last Registration forward display The direction display for reverse DISPLAY amp PARAM reverse is reset the display for forward DISPLAY amp PARAM forward is set V1 0 01 27 06 30 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program Application inductive BEROs Entry ID 22957673 4 2 3 FC 2 Speed Table 4 4 Detailed description of FC 2 NW Explanation 1 Calculate Speed The update ID IDB SPEED_update which caused the call of the FC is unconditionally reset If no object is located in the range of the measuring device D no_object or if the conveyor is not running
28. c g_Geschwindigkeit Principles of Operation and Program Structures Explanations on the Example Program SIEMENS Application inductive BEROs Entry ID 22957673 4 Explanations on the Example Program You are provided with information on e the structure of the STEP7 program e the functions of the individual blocks and networks 4 1 The structure of the STEP7 program Figure 4 1 Structure of the STEP7 program operating system organisation blocks E data blocks function blocks instance data blocks user functions LJ z i C library functions L system functions The block architecture of the STEP7 operating system ensures the structuredness of the program V1 0 01 27 06 24 55 SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Table 4 1 Used software blocks Block Explanation OB 1 Organization block called by the operating system for the cyclic program processing It calls the user function block FB1 OB 100 Organization block called by the operating system which is processed when restarting the CPU The block ensures that the Last Registration boxes of the HMI start screen are preset with the time stamp of the restart during the res
29. dard hardware and software components and the specially created user software Principles of Operation and Program Structures This part describes the detailed functional sequences of the involved hardware and software components the solution structures and where useful the specific implementation of this application It is only required to read this part if you want to familiarize with the interaction of the solution components to use these components e g as a basis for own developments Structure Configuration and Operation of the Application V20_e doc This part takes you step by step through structure important configuration steps startup and operation of the application Appendix g_Geschwindigkeit This part of the documentation includes further information e g bibliographic references glossaries etc Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Reference to Automation and Drives Service amp Support This entry is from the internet application portal of Automation and Drives Service amp Support The documentation has the entry ID 22957673 Click the link below to directly display the download page of this document http support automation siemens com WW view en 22957673 All entries referenced in this document are designated by their entry ID and addressed via the above path 01 27 06 4 55 Copyright Siemens AG 2006 All rights reserved V
30. e on the right JT PG PC is the only master on the bus Quit the dialog box with OK Aaker 7 a Timeout 1s m Network Parameters Transmission Rate 187 5 kbps 7 Highest Station Address 31 z Default Cancel Help V1 0 01 27 06 48 55 SIEMENS Structure Configuration and Operation of the Application Installation and Startup Application inductive BEROs Entry ID 22957673 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun No Instruction Note 4 Click OK to close the Set PG PC Interface window and exit the control panel 5 Open the SIMATIC Manager 6 Extract the project J SIMATIC Manager AP_IND BERO D Applika 1 Select the project 5 File Edit Insert PLC View Options Window BIDxyz_Richtung_Geschwindig keit_V20_e zip via the File gt olz AE ae J ae wal fo Sa 2 Retrieve menu Obiect 2 Select a target directory for the FATIC 300 TRETE extracted project folder of the 5 K CPU 314C 2 DP m oaa LJ 2BEROs same name E E S7 program g Diff Dist 3 After extracting you are asked in OBEROs cou Di the SIMATIC Manager whether aE Dit pis E Equ Dist you want to open the project H E Equ Dist E 2BEROs Answer with H 7 2BEROs Diff_Dist Yes E7 Diff_Dist Equ_Dist The figure on the right shows the H E Equ_Dist T MPI 1 extracted project Th
31. e project includes the examples e Basic application Equ_Dist with three BEROs and equal BERO distances e Modification Diff_Dist with different BERO distances e Modification 2BEROS with two BEROs instead of three Each example consists of the respective program folder and the corresponding WinCC flexible project The HW Config is identical for all three examples By default the basic application Equ_Dist is located under the CPU 7 Select the SIMATIC station and load L ESRSITH ERED Ge rob Qiess iment ty ec the project to the S7 CPU via the PLC gt Download menu or the corresponding button EP File Edit Insert PLC View Options Window He ial a 2 Object name aly Hardware CPU 314C 2 DP 2e zim zs al Te fa F Di Diff Dist 01 27 06 49 55 SI E M EN S Structure Configuration and Operation of the Application Installation and Startup V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Loading the application software to the panel Table 6 3 Loading the application software to the panel No Instruction Note 1 Make sure that the transfer settings on the TP170A are correct Click the Config button in its start menu to moea display the Transfer Settings Enable Remote screen form Make the settings as shown in th
32. e purpose of e time coordination of sequential production steps of a production process e optimization of the conveying flow in a conveyor system e g freight center e direction control of the material to be conveyed it is required that speed and or direction of motion of the material to be conveyed are detected with contactless sensors Using a PLC this information is used to control the conveying flow An HMI human machine interface e g a touch panel enables to monitor the conveying flow and direction decisions by operator inputs are possible Overview of the automation problem The below figure shows an example of a possible field of application for this application V1 0 01 27 06 6 55 SI E M E N S Application Description Automation Problem Application inductive BEROs Entry ID 22957673 Figure 1 1 Field of application of sensors for process monitoring it_V20_e doc g_Geschwindigkei Description of the automation problem Copyright Siemens AG 2006 All rights reserved 22957673_Richtun In a technical plant a conveyor section is to be monitored which can run in both directions at different speeds This is done to avoid disturbances of the coordination in the interaction of different production steps This requires contactless detection of the containers transported on the conveyor elements by sensors Using the sensor signals both the direction of motion and the speed of the objects a
33. e screen shot on the right and close the dialog box with OK r MPI DP Transfer E Enable Remote Address i Up Down Baudrate 187 5 kB Up Down OK 2 In the start menu of the panel to You go to the transfer mode of the panel which you have now returned click the Transfer button 3 In the development system open the RJ SIMATIC Manager AP_IND BERO D Applikation AP_IND_BE WinCC flexible project Equ Dist via amp File Edit Insert PLC View Options Window Help the context menu right mouse Dz s g l siele al e Fal 2a button as shown on the right ES AP IND BERO H E SIMATIC 300 H E 2BEROs E Kommunikation Lt Diff_Dist P Meldungen cgr Eo Dist Benutzerverwaltung WinCC flexible AT EN Ga OBEROs H E Dift_Dist H E Equ_Dist ii Ctr CHI G Colt Del Rename F2 Object Properties Alt Return 4 Select Project gt Transfer gt Transfer a Settings or click the corresponding Project Edit view Insert Format Faceplates button D mew EDL Mau Deni sikh Deniach Wizard UfIpues a Recent Projects gt Backtransfer gJ Ext Backup Mectore V1 0 01 27 06 50 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SI E M EN S Structure Configuration and Operation of the Application Installa
34. example shall be excluded Such an exclusion shall not apply in the case of mandatory liability e g under the German Product Liability Act Produkthaftungsgesetz in case of intent gross negligence or injury of life body or health guarantee for the quality of a product fraudulent concealment of a deficiency or breach of a condition which goes to the root of the contract wesentliche Vertragspflichten However claims arising from a breach of a condition which goes to the root of the contract shall be limited to the foreseeable damage which is intrinsic to the contract unless caused by intent or gross negligence or based on mandatory liability for injury of life body or health The above provisions does not imply a change in the burden of proof to your detriment Copyright 2006 Siemens A amp D It is not permissible to transfer or copy these application examples or excerpts of them without first having prior authorization from Siemens A amp D in writing For questions about this document please use the following e mail address mailto csweb ad siemens de 01 27 06 2 55 SI EM ENS Foreword Application inductive BEROs Entry ID 22957673 Foreword Objective of the application This application was created to provide the user with the following e A modifiable and expandable example of a detection of moving metallic objects and e the illustration of a convenient option of operating and visualizing a control usi
35. g the coil as an oscillator element The ferrite core is shaped in such a way that the largest part of the magnetic field lines is guided in it The core is only open in measuring direction so that the magnetic field lines can exit the housing and form a measuring field before the proximity switch With increasing distance from the switch the flux density of the magnetic field decreases more and more so that also the sensitivity for a test object decreases continuously If a test object is within the switching distance the magnetic field induces currents in the test object The effects of these currents are detected by the electronics and cause a change of the switching status of the sensor BERO 3RG4 inductive proximity switches by Siemens e Inductive proximity switches operate without mechanical wear e Types for damp environments or with IP 68 plastic casing if resistance to welding is required e Switching distances from 0 6 mm to 75 mm e Types from 3 mm diameter to 100 x 80 x 40 mm e Casing of plastic brass stainless steel and other materials e High reliability maintenance free over a long life e Pin point switching with high operating speed also in case of extreme switching frequency Figure 3 2 Left Inductive proximity switches of the BERO 3RG4 series right BERO 3RG4038 3CD00 used in this application 01 27 06 23 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e do
36. iod sec Reset Time sec 5 Load the modified blocks to the CPU and the changed HMI configuration to the touch panel V1 0 01 27 06 44 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun g_Geschwindigkeit V20_e doc Principles of Operation and Program Structures Modifications to the Example Program optional SIEMENS Application inductive BEROs Entry ID 22957673 5 4 Changing the runtime language TP170A The texts for the TP170A are configured in German and in English Without change in the WinCC flexible project the texts are displayed in English To change the language proceed as follows 1 Open WinCC flexible see point 3 of Table 6 3 2 Open the Languages and Fonts Editor 3 Deactivate the checkbox for English and activate the checkbox for German As a result the languages exchange their lines The selected language is always displayed at the top Figure 5 17 WinCC flexible Languages and Fonts Editor Sf winCc flexible 2005 Standard AP_IND BERO Equ_Dist Project Edit View Insert Format Faceplates Options Window Help nw MO X XY GOH German Germany F S QA languages and Fonts ila fi 4m 4 lee PRO yeen Equ_Dist TP 1704 B Screens Figs Communication 2 Alarm Management H B Runtime User Administration E Device Settings g Device Settings 7 Languages and Fonts amp Scheduler Es tj Language
37. irection Detection Speed Detection release_direction release speed parameters stop runtime release_direction Releases Speed Detection enable disable enabled release speed l Parameters BERO distance or DI C 25 0 Display Period sec EE display _period V1 0 01 27 06 32 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Principles of Operation and Program Structures Modifications to the Example Program optional Application inductive BEROs Entry ID 22957673 5 Modifications to the Example Program optional You are provided with information on 5 1 what you have to do if e the BERO distances cannot be kept equal e you want a different flicker frequency e you prefer a solution with two BEROS e you want to change the runtime language on the TP170A Different BERO distances Solution principle If the objects move in forward direction the speed is measured between BEROs 2 and 3 if the objects move in reverse direction the measurement takes place between 2 and 1 For the definition of the direction see Figure 1 2 As the direction detection in FC1 the speed detection in FC2 also has to be performed direction dependently Changes The modified functionality requires that the blocks FC2 FB1 and DB11 are changed Since now two BERO distances have to entered on the touch panel the HMI
38. isplay is no longer updated and keeps the last status ON or OFF 4 actual speed m s A speed detection is only performed if the conveyor section is in operation As soon as an object has passed all three sensors the determined speed is displayed After a defined display duration has elapsed see Parameters screen the speed display is reset to 0 000 If there is no connection to the PLC is displayed 5 Direction Detection It is displayed whether the direction detection is disabled or enabled see Releases screen The direction is only displayed according to point 1 if the direction detection is enabled If the connection to the PLC fails the display is no longer updated and keeps the last status disabled or enabled 6 Speed Detection It is displayed whether the speed detection is disabled or enabled see Releases screen The speed is only displayed according to point 4 if the speed detection is enabled If the connection to the PLC fails the display is no longer updated and keeps the last status disabled or enabled Three buttons to call additional screens are located at the bottom of the display V1 0 01 27 06 12 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Application Description Automation Solution Application inductive BEROs Entry ID 22
39. n the Example Program V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 NW Explanation 5 Positive Edge at BERO 3 If BERO 3 detects a positive edge the object ID DB no_object is reset and the following procedure takes place If no edge is detected a jump to the next network occurs If the object has already passed BERO 1 and BERO 2 IDB BERO1_object_detected BERO2_object_detected e the timer for the display duration is started e the update ID for the direction DB DIR_update is set e the update ID for the speed is set DB SPEED_update provided that the conveyor was not switched off or disturbed IDB conv_temp_off while the object was moving from BERO 2 to BERO 3 If the conveyor was interrupted the running ID DB conv_temp_off is reset e the time stamp used as target for the speed measurement DB time stamp_stop is written into the instance DB e the detection ID for BERO 3 DB BERO3_object_detected is set e the detection IDs for BERO 1 and BERO 2 IDB BERO1_object_detected BERO2_object_detected are reset If the object has passed BERO 2 but not BERO 1 e the detection ID for BERO 2 DB BERO2_object_detected is reset If the object has passed BERO 1 but not BERO 2 e the detection ID for BERO 1 DB BERO1_object_detected is reset
40. ndigkeit SIEMENS Principles of Operation and Program Structures Modifications to the Example Program optional Application inductive BEROs 5 3 Entry ID 22957673 Figure 5 8 Changing the symbol table Sx Symbol Editor 57 program Symbols AP_IND BERO SIMATIC 306 5 Symbol Table Edit Insert Yiew Options Window Help oh amp pB o c sini Status Symbol Address Data Comment M conveyor_on BOOL BERO2_signal 33 BOOL output of BERO 2 BERO1_signal l 02 BOOL output of BERO 1 flickering_rev Q 44 BOOL flickering digital output flickering fwd BOOL flickering d digital output clock memory _bit BOOL MO0 07 1075 25 BERO3_signal BOOL _ output of BERO 2 JDISPLAY PARAM DB 11 DB 11 DB for display and pare 2 tem P 3 In NW9 of FB1 replace M 0 1 by M 0 2 Immediately after the change the Editor replaces the absolute address by the clock_memory_bit symbol Save the block Figure 5 9 Change in network 9 of FB1 DISPLAYSPARAM forward I j pe fo je flickering rev 4 Load the modified block to the CPU Direction and speed detection with two BEROs Differences in comparison with the core solution In the following BERO 2 will be removed from the measuring device Direction and speed detection is also possible with only two BEROs However this influences the reliability since
41. nected to the three digital inputs integrated in the V1 0 01 27 06 10 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI EM ENS Application Description Automation Solution Application inductive BEROs Entry ID 22957673 central processing unit The TP170A touch panel is connected to the MPI of the controller via a PROFIBUS cable The controller and the BEROs as well as the touch panel are supplied with 24V DC by the PS 307 power supply 2 2 Description of the core functionality 2 2 1 Overview and description of the user interface A TP 170A touch panel is primarily used as HMI The display HMI is realized by three screens e Start screen main screen e Releases screen e Parameters screen In addition the passing of the BEROs is displayed by optional flickering of two digital output bits forward reverse TP 170A Start screen Figure 2 2 Start screen SIMATIC PANEL Direction Last Registration forward E 03 01 2006 11 45 18 reverse D 03 01 2006 11 10 37 conveyor section actual speed m s 1 870 Direction Detection Speed Detection parameters stop runtime Provided that the touch panel has already been loaded with the HMI software created in WinCC flexible the above start screen which at the same time is to be considered as main screen is displayed when applying the supply voltage The following da
42. ng a touch panel This application shows how speed and conveying direction forward reverse of metallic objects or non metallic objects with metal targets transport containers are determined using a SIMATIC controller and three inductive BEROs e This topic is particularly relevant in conveying and handling systems Main contents of this application This application deals with the following key elements V20_e doc e Design principle of operation and application of inductive proximity switches BEROs e STEP7 program of a speed and direction detection of material to be conveyed or objects in a production process e Connection of a touch panel for operator control of the process and plant monitoring using WinCC flexible g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Delimitation This application does not include a description of e the SIMATIC STEP 7 engineering tool e the WinCC flexible visualization software Basic knowledge of these topics is required 1 BERO Sensor for the Contactless Recording of Objects V1 0 01 27 06 3 55 SIEMENS Foreword Application inductive BEROs Structure of the document Entry ID 22957673 The documentation of this application is divided into the following main parts Part Description Application Description You are provided with a general overview of the contents You are informed on the used components stan
43. nge the following hardware components from the left to the right and screw them down Power supply PS CPU 314C 2 DP 2 Screw the front connectors into the two slots 3 Establish the 24V supply of the CPU by the power supply 4 Wire the power supply for the used DI DO The application uses the bytes of the part of the CPU right front connector designated with DI 0 and DO 0 on the housing The pin assignment is printed on the inside of the cover V1 0 01 27 06 46 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M EN S Structure Configuration and Operation of the Application Installation and Startup Application inductive BEROs Entry ID 22957673 No Instruction Note 5 Connect the signal cables of the BEROs to For the connections of the BEROs see byte DI 0 of the controller Table 2 4 in chapter 2 4 e BERO1 Bit 2 terminal 4 e BERO2 Bit 3 terminal 5 e BERO3 Bit 4 terminal 6 6 Install the BEROs at the conveyor section to Observe the minimum distance be monitored at an equal distance from between the BEROs to avoid each other and screw the connection interference compare Table 2 4 in cables chapter 2 4 or corresponding BERO If an equidistant mounting of the BEROs is data sheet not possible for constructional reasons the solution described in 5 1 Different BERO distances comes i
44. nto consideration 7 Connect a 24V ON signal to byte DI 0 The signal must correspond to the bit 5 terminal 7 to the controller actual mode of the conveyor not its starting command 8 Wire the power supply of the TP170A Use the Profibus cable to connect the MPI On the CPU use a connector with PG of the S7 CPU to the IF1B interface of the socket to enable the additional TP170A connection of your development system PG PC The cable from Table 2 1 meets this requirement 10 Set the DIP switches on the rear of the TP170A to DP MPI mode 11 Connect the MPI of the CPU to the MPI of Plug the MPI cable on the CPU leading your PG PC to the PG PC in the PG socket of the PROFIBUS connector Note Further information on setting up an S7 300 automation system is available in 3 Installation of the standard software It is assumed that the software specified in chapter 2 3 Table 2 1 is installed on your PG PC If you use a PC or notebook as development system it is required that it is equipped with a communications processor e g CP5512 PC card for notebooks 6 2 Installation of the application software Requirement 1 The hardware installation is completed 2 All components are supplied with voltage 3 The CPU is switched to STOP with the mode switch V1 0 01 27 06 47 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun
45. od fdisplay period 9 990000e 001 DISPLAYSPARAM _BERO distance 12 fBERO_distance LO31 DISPLAYSPARAM BERO distance 12 f BERO_ distance L 9 990000e 001 L DISPLAYSPARAM BERO_distancd 23 f BERO_ distance ABS gt R JC LOS1 TAK LOS1 T DISPLAYEPARAN BERO_distancd 23 BERO distance Network 6 Update the FC2 call Figure 5 4 FC2 call update in FB1 CALL SPEED 7 Use WinCC flexible to enter the second BERO distance in the Parameters HMI screen The variables to be connected for the BERO distances are DISPLAY amp PARAM BERO_distance_12 and DISPLAY amp PARAM BERO_distance_23 V1 0 01 27 06 35 55 SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional t_V20_e doc ig_Geschwindigkei Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Figure 5 5 Parameters screen with option to enter different BERO distances SIEMENS Parameters EE 8 Load the modified blocks to the CPU and the changed HMI configuration to the touch panel 5 2 Changing the flicker frequency Solution principle The CPU provides a clock memory byte with eight bits of which the signal status changes periodically with a pulse pause ratio of 1 1 The bits represent eight different frequencies V1 0 01 27 06 36 55 Copyright Siemens AG 2006 All rights reser
46. on IDs BERO 1 BERO 2 or the detection IDs BERO 2 BERO 3 are both set the running ID DB conv_temp_off is set 9 Flickering Outputs While the display_timer is active the direction of an object is indicated by a flickering 5Hz of the digital outputs flickering_fwd or flickering_rev This flickering is achieved by the logic operation AND of the direction ID DISPLAY amp PARAM forward reverse and M 0 1 clock_memory_bit V1 0 01 27 06 29 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program Application inductive BEROs Entry ID 22957673 4 2 2 FC 1 Direction Table 4 3 Detailed description of FC 1 NW Explanation 1 Detect Direction The update ID IDB DIR_update which caused the call of the FC is unconditionally reset If no object is located in the range of the measuring device D no_object or if the conveyor is not running conveyor_on E0 5 0 the direction displays DISPLAY amp PARAM forward reverse and the update ID IDB DIR_update are reset and the block is exited If the detection ID for BERO 1 is set DB BERO1_object_detected which means that an object has just passed BERO 1 in reverse direction the time stamp read out in NW4 of FC1 DB timestamp_stop is tr
47. orward reverse The speed of the material to be conveyed in m s The time stamp of the last object detection Mode of the conveyor section ON OFF Status of the direction detection enabled disabled Status of the speed detection enabled disabled e The following operations are to be possible Enabling disabling the direction detection Enabling disabling the speed detection Terminating the runtime Entering the sensor distance Entering the display duration Note The above mentioned requirements are met by the application software without need for additional programming overhead or entering parameters in data blocks 01 27 06 9 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit Application Description Automation Solution SIEMENS Application inductive BEROs Entry ID 22957673 2 Automation Solution You are provided with information on the solution selected for the automation problem 2 1 Overview of the overall solution Diagrammatic representation The following figure schematically shows the most important components of the solution Figure 2 1 Hardware overview of the automation solution intro Structure A SIMATIC CPU 314C 2 DP is the key element of the application This central processing unit already includes the digital inputs and outputs required by the application The switching outputs of the three inductive BEROs are directly con
48. ove are written to the respective same variable and thus displayed on the touch panel Timer for Display Period When calling FB 1 for the first time a timer is started with the display duration DISPLAY amp PARAM display_period defined by the user in the Parameters HMI screen A timer restart is subsequently only possible by an explicit enable In the further course of the program this enable is given whenever one of the BEROs signals an object in the monitored space see networks 4 and 5 If this is not the case and if the timer elapses the update IDs DB DIR_update GPEED_update causing a call of the functions FC1 and FC2 are set The object ID also set at this location IDB no_object ensures that FC1 FC2 reset the direction displays and the speed value in DB11 DISPLAY amp PARAM forward reverse speed Positive Edge at BERO 2 If BERO 2 detects a positive edge e the time stamp used as starting point for the speed measurement IDB timestamp_start is written into the instance DB e anevent ID DB BERO2_object_detected is set e the object ID DB no_object is reset 01 27 06 26 55 SI E M E N S Principles of Operation and Program Structures Explanations on the Example Program V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 NW Explanation
49. re to be determined and displayed on an output device Figure 1 1 merely illustrates the rough topic of the application The detail problem of the speed and direction detection is illustrated in Figure 1 2 Not reflex sensors as shown in the above figure but inductive BEROs are used as sensors Their robustness and insensitivity to dirt ensure reliable operation also under harsh conditions and they are thus widely used in the industrial field However this requires that the objects to be detected consist of metal at least partly or that they have a metal target special transport containers for the BERO detection To avoid misinterpretations during the object detection not only two but three sensors are to detect the passing objects Direction and speed are only determined after all three sensors have successively signaled the object V1 0 01 27 06 7 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit Application Description Automation Problem SIEMENS Application inductive BEROs Entry ID 22957673 Figure 1 2 Schematic view of the automation problem BERO 1 BERO 2 lt a j reverse forward material to be conveyed S y Pi conveyor section 4 S S distance between BEROs ty measured time with discharge direction forward ty measured time with discharge direction reverse m complete measuring distance 12 Requirements
50. runtime language TP170A ccceceeceeeeeeeeeeeeeeteeeeteeeneeeeeeees 45 Structure Configuration and Operation of the Application ssccesssseeeeeees 46 6 Installation and Startup vcs oseaoc ca seccc eset rcaed ck casted eve dente ncedhbandsneveneccntvacecee 46 6 1 Installation of hardware and software eect eter eee eeeeeenaeeeeeeeeeeeeeaaa 46 6 2 Installation of the application software ue cece eee eeeettteeeeeeeeeeeeennneeeeeeeeetes 47 6 3 SOLAN UID er eaa a r A P aE Eea duce candy aa Ea ues deena tet aac 51 Appendix and Literature sssnnessnunnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn nnnnnnnnnn nnna 54 7 iterature siia aaaea arane aeaee aaae aaar arsaa Anaa Ana ranea naua ANERE s aa aiei 54 V1 0 01 27 06 5 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SI E M E N S Application Description Automation Problem Application inductive BEROs Entry ID 22957673 Application Description Content You are provided with a general overview of the contents You are informed on the used components standard hardware and software components and the specially created user software The displayed performance data illustrate the performance capability of this application 1 Automation Problem You are provided with information on the specific automation problem described in this documentation 1 1 Overview Introduction For th
51. second BERO is not reached within the reset time Thus it is ensured that the measuring equipment is reset if the object does never reach the second BERO The reset time is disrupted if the conveyor is switched off It is continued when the conveyor starts again BERO1 object _detected BERO3_object_detected fobject_ detected ftemp var fobject_detected L013 DISPLAYSPARAM reset_time reset_time feonvert input to SSTIME format 4 4 W 16 2000 reset_time_saved fobject_detected reset_time_ saved fstart reset timer reset timer yeset_timer when reset timer has elapsed reset timer BERO object_detected BERO3_object_detected conveyor _on f fsave reset time value if conveyor is off conveyor_on_old fobject_detected L023 reset_timer reset_time_saved reset_timer 0 conveyor_on f frestart reset timer fobject_detected reset_timer If one of the BEROs has detected an object the reset_timer is started as latching ON delay with the reset time parameterized on the touch panel DISPLAY amp PARAM reset_time After the timer has elapsed it is no longer assumed that the object arrives at the second BERO and the detection IDs of both BEROs are reset The measuring device is again in its initial status If the conveyor stops while an object is located between the BEROs a detection ID BEROx object_detected x 1 2 is set the reset_timer is also interr
52. ta are displayed V1 0 01 27 06 11 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit Application Description Automation Solution SIEMENS Application inductive BEROs Entry ID 22957673 1 Direction A direction detection is only performed if it is enabled see Releases screen and if the conveyor section is in operation As soon as an object has been detected by all three sensors its conveying direction is indicated by an X in the corresponding box After a defined display duration has elapsed see Parameters screen the X disappears For the definition of the terms forward and reverse see Figure 1 2 If the connection to the PLC fails the display is no longer updated and keeps the last status or X 2 Last Registration If the conveyor section runs and if the direction detection is enabled see Releases screen the last object passing the three BEROs is provided with a direction dependent time stamp The time is from the PLC clock Another object with the same conveying direction overwrites the time stamp is displayed if there is no connection to the PLC The time stamps of both conveying directions are updated during the STOP gt RUN transition of the PLC 3 conveyor section The mode is displayed ON conveyor is running OFF conveyor is not running If the connection to the PLC fails the d
53. tart The time stamp is transferred from the OB100 local data start information of the block see OB100 online help to DB11 by means of the SFC20 BLKMOV system function FB 1 This user function block is the main program of the application It includes the logic for e the direction and speed detection with call of the functions FC1 and FC2 e the display duration e the calls of SFC1 READ_CLK for the event controlled reading of the CPU clock e the direction display via the digital outputs DB 1 Instance DB for FB 1 The block is used as buffer for edge pulse status flags and for the buffering of the time stamps FC 1 This user function realizes the direction display with time stamp FC 2 This user function realizes the speed calculation The FC3 4 library function is called which creates a time stamp difference FC34 The library function from standard library IEC function blocks subtracts two time stamps and a period as a result See FC34 online help DB 11 Interface DB to the touch panel for the data to be displayed or the user parameters to be entered SFC 1 System function implemented in the CPU for reading the CPU clock See SFC1 online help SFC 20 System function implemented in the CPU for copying a memory area In this application SFC20 is used to transfer the time stamps See SFC20 online help 4 2 Detailed description of the individual software blocks The detailed
54. techinhan auto index cfm bookid 5816 9 Prof Dr Ing G Goch Dipl Ing W Behrendt Dipl Phys S Patzelt Dipl Phys H Prekel Dipl Phys D St bener Dipl Phys A Tausendfreund Universit t Bremen Fachbereich 4 Produktionstechnik University of Bremen Department 4 Manufacturing Engineering Lab manuscript on the lecture Messtechnik und Sensorik Measurement and Sensors 6 edition October 2005 http www msr uni bremen de download MSGrundlagenlInduktiv pdf 10 Frank Ebel Siegfried Nestel Festo Didactic GmbH amp Co KG Sensors for handling and processing technology Proximity sensors Textbook FP 1110 As at 09 2003 http Awww festo didactic com didactic media mm download 093045_web pdf V1 0 01 27 06 55 55
55. tion and Startup Application inductive BEROs Entry ID 22957673 No Instruction Note 5 Make the settings as shown in the screen shot below Eik Select devices for transfer m x M Settings for Equ_Dist TP 1704 m Transferto Flash C RAM Mode MPI DP m Delta transfer On C of Station address f1 Ce Js e Click Transfer to start the data transfer Answer the question Do you want to overwrite the existing password list on the device at least when transferring your configuration for the first time with Yes After the end of the transfer the touch panel switches to the start screen defined in WinCC flexible Figure 2 2 Note The above table of steps describes the loading of the TP170A via MPI However the configuration can also be transferred to the panel serially For more information please refer to 4 and 5 6 3 Startup Requirement 1 The hardware and software installation as described in chapters 6 1 and 6 2 is completed 2 No object is in the range of the measuring device 3 The conveyor section is not running conveyor_on 0 The core functionality of the application is verified if all statements and reactions to operations listed in the following table are true V1 0 01 27 06 51 55 V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun SIEMENS Structure Configuration and
56. tion on 3 1 the general function mechanisms which apply with regard to BEROs Basics on inductive sensors To provide also readers with little or no experience in sensor technology with an introduction to the topic some basic information on inductive sensors will be listed in the following Brief description Inductive proximity switches are used to detect positions of metallic parts and to convert them into electrical signals These signals are further processed in controlling and signaling equipment PLC The output signals from the PLC can then trigger actions such as switching a contactor Design An inductive proximity switch basically consists of a coil a ferrite core and connected electronics figure 1 1 These elements are enclosed densely and immune to vibrations in a housing Figure 3 1 Schematic representation of an inductive proximity switch I 3 plug housing ferrite core magnetic field V 1 0 01 27 06 22 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Principles of Operation and Program Structures General Function Mechanisms Application inductive BEROs Entry ID 22957673 Principle of operation The electronics generate a high frequency signal which is converted by the coil into a magnetic field of the same frequency The electronic setup is based on a dampened electrical oscillator switching circuit containin
57. two digital outputs e Conveying direction forward A 4 0 e Conveying direction reverse A 4 1 The duration of the flickering corresponds to the display duration The digital outputs could e g be used to control indicator lights 2 2 2 Sequence of the main functionality The following flowchart illustrates the core functionality detection of direction and speed It refers to the time and path designations in Figure 1 2 It is assumed that direction and speed detection are enabled V 1 0 01 27 06 15 55 SI E M E N S Application Description Automation Solution V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Figure 2 5 Flowchart of the core functionality start y timer for display period elapsed Y y reset display for direction and speed N AA positive edge at BERO 2 Y AA save time stamp t BERO 2 y set detection flag of BERO 2 N AA positive edge at BERO 1 Y v detection flag of BERO 2 and BERO 3 Y already set AA v N display reverse with time stamp tero Y detection flag of BERO 2 already set calculate and display speed v sit but not of BERO 3 AA vy N start retrigger display period set detection flag of BERO 1 y reset detection flags of BERO 2 and BE
58. upted and enabled with the saved value IDB reset_time_saved when the conveyor starts moving Network 4 Change the Positive Edge at BERO 1 network as shown in the figure below V1 0 01 27 06 42 55 SI E M E N S Principles of Operation and Program Structures Modifications to the Example Program optional V20_e doc g_Geschwindigkeit Copyright Siemens AG 2006 All rights reserved 22957673_Richtun Application inductive BEROs Entry ID 22957673 Figure 5 14 Modification network 4 Positive Edge at BERO 1 4 BERO signal FP FP1 PF1 f f define pulse flag A BERO3 object detected delete 4 PFL FR display timer ffrestart display period PF1 JCN END4 R ffno_object A BERO3 object detected delete JCN LO14 AN fcony_temp_off S SPEED_update 4 fcony temp off R conv tempo EE gy BEDS CALL READ CLK RET_VAL MWZ48 CDT ftimestamp stop LO14 CALL READ CLK RET_VAL MWZ44 CDT ftimestamp start BERO3_ object detected BEROZ object_detected Loz4 BERO object detected BERO3_object_detected BEROZ object_detected Basically BERO 2 is not polled here The time stamp for the start of the speed measurement which has previously been picked up from the positive edge at BERO 2 in network 3 is now from the positive edge at BERO 1 Network 5 This network is identical with network 4 the difference being that the detection IDs of the two BE
59. ved 22957673_Richtun V20_e doc g_Geschwindigkeit Principles of Operation and Program Structures Modifications to the Example Program optional SIEMENS Application inductive BEROs Entry ID 22957673 Figure 5 6 Clock memory byte FM SM I Si eS ec Is 1 0 10 Hz 5 Hz flickering 2 5 Hz fast blinking 2 Hz 1 25 Hz blinking 1 Hz 0 625 Hz slow blinking 0 5 Hz One of these bits M 0 1 clock_memory_bit is used by the user program to generate the flicker frequency of the digital outputs flickering_fwd or flickering_rev You can change the frequency by using one of the other eight clock memory bits Note The clock memory byte is activated and assigned in HW Config in the object properties of the CPU under Cycle Clock Memory Changes In the following the flicker frequency is to be reduced from 5 Hz to 2 5 Hz 1 Open the symbol table Figure 5 7 Opening the symbol table EV AP_IND BERO D Applikation AP_IND_BERO AP_IND BERO Object name A SIMATIC 300 J CPU 314C 2 DP H a S7 program 2BEROs Diff_Dist i Equ_Dist sz 2BEROs J Diff_Dist E7 Equ_Dist f cS FF j i 2 Assign the address M 0 2 previously M 0 1 to the clock_memory_bit symbol and save the symbol table V1 0 01 27 06 37 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwi
60. y ID 22957673 Application software Table 2 5 Performance data of the application software Criterion Performance data Additional note MMC 6086 bytes POAN size Main memory 4200 bytes For CPU according to Table 2 1 Only one object permitted in measuring distance Object must be Maximum cycle time 3 ms Entire measuring distance m Minimum object distance compare Figure 1 2 Object length Any securely detected by BERO a User parameter n DB11 Sem compare Figure 1 2 Display duration default value in DB11 User parameter Resolution of the speed display on the touch 3 decimal places Unit m s panel Number of HMI screens 3 V1 0 01 27 06 21 55 Copyright Siemens AG 2006 All rights reserved 22957673_Richtun V20_e doc g_Geschwindigkeit SIEMENS Principles of Operation and Program Structures General Function Mechanisms Application inductive BEROs Entry ID 22957673 Principles of Operation and Program Structures Content 3 This part describes the detailed functions and functional sequences of the involved hardware and software components the solution structures and where useful the specific implementation of this application It is only required to read this part if you are interested in details on the solution components and their interaction General Function Mechanisms You are provided with informa
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