User Manual For Mini PROFIBUS Repeater PFB
Contents
1. II Main Applications and Features of Mini PROFIBUS Repeater Mini PROFIBUS Repeater has following applications 1 Bus branching PROFIBUS network is of bus topology not allowing branches which make wiring difficult Installing a repeater at the junction can amplify one more bus since the repeater can change PROFIBUS bus topology and achieve other network structures like star structure and mixed pattern which are convenient for wiring 2 Functions of the repeater MiniPROFIBUS Repeater has two pairs of interfaces Al amp B1 A2 amp B2 Each of the two drives one PROFIBUS network segment respectively which means another 31 station interfaces can be connected and the signal can pass through trunk amplification to prolong the max transmission distance under corresponding transmission rate Moreover cascade connection can also be realized Consequently PROFIBUS network of mixed pattern is constituted through the repeater and the stations can be as many as 126 The transmission distance can be as long as several kilometers based on the number of cascade connection related to the used transmission baud rate 3 Functions of the isolator The two pairs of interfaces Al amp B1 and A2 amp B2 are isolated from each other The power port is also isolated from RS485 signal port Such conditions are necessary for protecting interface interference suppression and improving the network system s reliability and stabiliza2. 2 R485 interfaces are integrated with anti lightning SPD with repeatable surge capacity Ipp 100A 10 700us 4KV meet the standard ITU TK20 21 VDE 0433 15KV ESD static Protection Working temperature 40 85 C Outline size 80mmx16mmx40mm L W H weight 50g e Installation means directly plug it into the device s PROFIBUS MPI PPI socket IV External Structure and Pin Definition 1 Outline of PFB R 40 indicator light 80 Switch of terminal resistor Unit mm 8 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR HEEF User Manual for Mini PROFIBUS Repeater 2 Internal structure of PFB R 3 Indication light An emitting diode indication light exists on PFB R When A2 amp B2 of RS485 send data to the bus cable the indication light blinks at 5Hz 4 Signal definition of DB9M shrouded header plug PROFIBUS interface of PFB Rz Pin No of Signal Name Function Signal Direction DB9M 3 DB RS485 Signal Positive Input output 8 DA RS485 Signal Negative Input output 6 5VDC power of SVDC inputs into the input positive pole 5 GND power of SVDC inputs into the input negative pole 7 24V power of 24VDC inputs into input the positive pole 2 OV power of 24VDC inputs into input the negative pole 1 4 9 Not used Not used Not used Note As l
3. Century Garden NO 88 of Section 2 of Lushan South Road Deyang City Sichuan Province China TEL 86 838 2515543 2515549 FAX 86 838 2515546 Website http www FOURSTAR dy com 15 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com
4. With terminal i Switch OFF Without terminal Al Bi A2 B2 Fig 7 1 Internal functional block diagram of PROFIBUS bus connector plug 3 If the terminal station cannot avoid outage then what to do next If by any chance one has to cut the power of terminal stations then active terminal resistors with uninterrupted power have to be installed at the segment s terminals as the network segment s terminal to 233 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 486 838 2515546 http www FOURSTAR dy com FOURSTAR Dear User Manual for Mini PROFIBUS Repeater guarantee normal network communication The product NO of active terminal resistor from Siemens is 6ES7 972 0DA00 0AA0 The one produced by FOURSTAR is PB TR485 With the active terminal resistor PROFIBUS network terminal is able to maintain the bus voltage at the standard level Hence for each station in the bus losing the connection will never cause network error Power failure in each segment terminal will affect other segments communication So terminals that may suffer power failure have to be integrated with active terminal resistors with uninterrupted power for replacement z PLC PLC Ki Eri active terminal resistor PB TR485 R ON Yor Fig 7 2 ctive terminal resistor installed at the network terminal 4 How to determine the whole network has reached the max communication speed Using PROFIBUS repeater or hub can
5. constitute a complicated network of mixed pattern Each segment has its own length Whether the whole network can reach the max communication speed or not is determined by the longest segment If higher communication speed is required you can use the repeater or hub to break up the longer segment to meet your needs 5 How to achieve PROFIBUS high speed remote communication When PROFIBUS is in high speed communication like higher than 3Mbps the cable cannot be longer than 100 meters The installation of various repeaters or hubs will result in worse signal delay higher cost and power trouble etc The optical fiber is currently of the best performance price ratio for communication For example the optical fiber switch module FS OLM S and FS OLM M produced by FOURSTAR VIII Ordering Information 14 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 86 838 2515546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater Product Name Mini PROFIBUS Repeater Product Model PFB R Announcement this document aims to give instructions for users of Mini PROFIBUS Repeater Model PFB R Since the technique develops rapidly the product s functions vary according to the actual items FOURSTAR Electronic Technology Co Ltd Deyang China preserves the rights to modify the document before announcement FOURSTAR Electronic Technology Co Ltd Deyang China The Second Floor of Building H
6. BUS 3 It needs no master station configuration and has no GSD File 4 No division of master or slave interface no division of input or output interface no division of terminal or non terminal node no matter master station or slave station can be plugged into any PROFIBUS interface 5 Self adapting under baud rate 0 12Mbps No switch or software configuration is needed 6 Segment isolation 2 interface segments Al amp B1 and A2 amp B2 are isolated III Features and Specifications Isolation voltage 1000VDC power against R485 R485 against R485 full isolation Power automatic selection of PLC programming port or power supply 24VDC 10 from foot 7 and foot 2 of PROFIBUS DP socket DB9F hole socket or SVDC 10 from foot 6 and foot x Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater 5 Power dissipation the power dissipation of PFB R is no more than 0 5W Communication speed automatic adaption without delay under 0 12Mbps Integrate terminal and bias resistor and data communication indication light Each segment s max communication distance under each transmission speed meets PROFIBUS Standards Transmission Rate 9 6K 19 2K 45 45K 93 75K 187 5K 500K 1 5M 3M 6M 12M bit s Max Cable Length 1200 1000 400 1200 100 Meter
7. FOURSTAR Ye http www FOURSTAR dy com Mini PROFIBUS Repeater PFB R User s Manual FOURSTAR Electronic Technology Co Ltd Deyang China All Right Reserved FOURSTAR NERF User Manual for Mini PROFIBUS Repeater Contents Prefac encerra o i E E E ena REEE E E S a SEN EEE ETAS 3 Copyright Statement inner ae mmm sama EE TED EESE E 3 Version Information cxccisscchsivsere vives se Bantan bie sens sey NA NN EA ANN 3 Packaging Listes 2nen seenak daan una NN wie E IER EEEREN 4 I Basic Features of PROFIBUS Network 00 0 0 on ne ea ene eeee tena en eneeeeaeae ens 4 II Main Applications and Features of Mini PROFIBUS Repeater 0 ce ceceeeee eee ne eens eee enenenenes 6 III Features and Specifications 2o cc cdecsnehevk ce antam badan tea aes RN ek bia tn Duda cout Meee 7 IV External Structure and Pin Defimition 0 cece cece cence ee een e tence acca eeee neta ea eneeaeneeaerens 8 V Internal Functional Block Diagram oa 10 VI Major Application Scheme of Mini PROFIBUS Repeater Jan an 11 VII FAO AE sena an na ne an aa an sind Reece NG en pn An 12 VIII Ordering Information Msi kenamaan na Benda adanya angs ana ui Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater Preface Thank you for using Fieldbus Network Products released by FOURSTAR Electronic Technology Co Lt
8. R ON Fig 6 2 Tree network formed by mini PROFIBUS repeater PFB R VII FAQ 1 Where does PFB R get working power supply As long as foot 6 and foot 5 of PROFIBUS MPI PPI socket DB9F hole socket have the output of 5VDC or foot 7 and foot 2 have the output of 24VDC PFB R can be sure to get working power supply 295 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 486 838 2515546 http www FOURSTAR dy com FOURSTAR HEEF User Manual for Mini PROFIBUS Repeater 2 One cannot cut the power of the terminal station in the network segment Why The head and end of PROFIBUS network segment are called terminals To suppress the reflection and distortion of RS485 the terminal cable has to be connected to A1 B1 of the bus connector and the switch of terminal resistor in the bus connector plug has to be moved to ON as a result of which the terminal interface is integrated with a terminal resistor of 220 ohms a pull up resistor of 390 ohms and a pull down resistor of 390 ohms so as to ensure the network s stable operation The pull up and pull down resistor needs 5VDC power supply from foot 6 and foot 5 of DP socket When the power of terminal station is off the pull up and pull down resistor also lose their power supply which will cause network communication error or no communication The diagram below explains the internal principle of PROFIBUS bus connector plug D SUB Male Connector Switch ON
9. any s consent in writing will assume the corresponding liability Version Information Document Name A User s Manual for Mini PROFIBUS Repeater Version V3 8 Ba Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 86 838 2515546 http www FOURSTAR dy com FOURSTAR NEEF User Manual for Mini PROFIBUS Repeater Modification Date May 13th 2011 Packaging List 1 A PFB R 2 A CD ROM include user s manual etc No software or driver is needed for the product I Basic Features of PROFIBUS Network RS485 interface technique is used in the physical layer of Fieldbus PROFIBUS which is the most common bus in application It is hard for RS485 Network to maintain rather high reliability and stabilization when the rate of data signaling reaches as high as 12MbpS Hence further strict definition and supplement for RS485 technique are added to PROFIBUS Standards including concepts like network topology segment terminal repeat branch etc Besides detailed technical specifications are given about the used network components such as cable connector repeater etc 1 As regulated in PROFIBUS Standards bus network topology is adopted when RS485 is signaled Network components like repeater and connector and concepts like network segment terminal etc are also presented in the Standards As shown in Fig 1 1 when the cable is longer than the standard length or stations in the network are more than that r
10. d Deyang China Before use be sure to carefully read the user s manual where you will find brief usage methods and interesting functions of this product The user s manual gives detailed instruction about how to use Mini PROFIBUS Repeater PFB R Another product of similar outline released before is PROFIBUS Isolator whose model number is PFB G The product is mainly used in Fieldbus Network like PROFIBUS MPI PPI etc It isolates repeats and amplifies Signal RS485 in order to prolong the communication distance and increase the number of stations or change the topological structure of PROFIBUS MPI PPI Network Such device can start working after connecting to DP socket It can be installed easily and covers little space It aims to bring convenience to the field s wiring installation prolong the network s transmission distance and uplift and quantity of stations Meanwhile it can isolate network and diagnose signal indication Please do follow the technical and functional specifications in the manual The company does not assume the property loss or personal injury caused by user s improper handling The company has the right to modify the manual s contents and product functions before announcement if the technical development requires Copyright Statement The manual s copyright belongs to FOURSTAR Electronic Technology Co Ltd Deyang China Any individual or organization copied the manual s contents in full or in part without the comp
11. dress 0 125 can be used in general master station slave station No more than 32 stations can appear in one PROFIBUS network segment If more than 32 stations are needed to be connected to PFOFIBUS bus such devices as repeaters or hubs are required to amplify the bus into several segments 4 The communication media for PROFIBUS has to be the special cable that meets the PROFIBUS Standards Siemens Product No 6XV1 830 0EH10 Such cable has the following features as shown in Table 1 1 Table 1 1 Features of Special Cables for PROFIBUS General Features Specification Type Shielded Twisted Pair Cross Section Area of Conductor 24AWG 0 35mm or thicker Cable Capacitance lt 60pf m Characteristic Impedance 100Q 1200 The max length of the communication cable in each PROFIBUS network segment is closely related to the baud rate as shown in the following Table 1 2 The max transmission rate of the whole PROFIBUS network depends on the network segment which has the longest cable 5 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater Table 1 2 The Max Cable Length of A PROFIBUS Segment under Different Transmission Rate Transmission Rate 9 6K 19 2K 45 45K 93 75K 187 5K 500K 1 5M 3M 6M 12M bit s Max Cable Length 1200 1000 400 200 100 Meter
12. egulated in the specifications a repeater is needed to cut the bus into Segment 1 and Segment 2 and the head and end of each segment are called terminals Repeater PROFIBUS slave master Station station slave slave i slave slave station station 3 station fl a station a om terminal Ki og Segment 2 Segment 2 Ler p terminal terminal PROFIBUS lt ON OFF ON ON connector di Nee Segment 1 r N Segment 2 m xo PROFIBUS cable Fig 1 1 PROFIBUS fieldbus adopts bus network topological structure JA x Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater 2 Terminal resistor has to be set at two terminal stations of each PROFIBUS network segment and the power is never off at the two stations during network operation if there s no uninterrupted power an active terminal resistor with uninterrupted power has to be installed at the terminal The active terminal resistor produced by FOURSTAR is Mode PB TR485 Set terminal resistor at terminal stations means moving the switch of terminal resistor in the bus connector plug of PROFIBUS to ON while switches in other stations bus connector plugs have to be moved to OFF So it is crucial to determine which station is the segment s terminal 3 Logically PROFIBUS Standards regulates that the number of stations can be 126 station ad
13. ng the communication distance and increase stations As shown in Fig 6 1 the repeater separates the bus into Segment 1 and Segment 2 Each cable s length fits the transmission speed of PROFIBUS Each segment allows no more than 32 stations Attention the switch of the terminal resistor has to be moved to ON Pen PLC PROFIBUS device PLC t F Re E d j r t E E PFB R D J je ei 3 R ON RY OFF R ON RY OFF R ON Subnetwork 1 Subnetwork 2 up to 32 stations up to 32 stations Fig 6 1 Mini PROFIBUS Repeater PFB R prolongs the communication distance and increases the stations 2 Use Mini PROFIBUS Repeater PFB R to achieve bus branching and tree network topology As shown in Fig 6 2 the bus connector plug with programming port is integrated at the junction The use only needs to connect PFB R to the bus connector plug Attention the switch of the terminal resistor has to be moved to OFF i Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR ye User Manual for Mini PROFIBUS Repeater PROFIBUS device Panel PLC a R OFF ej tp ON ROO O R R OFF Subnetwork 1 up to 32 stations A1 B1 TT EF babi PROFIBUS device Drive i PLC F 7 F F m ni 3 AP Eau up to 32 stations TE 9 2 e pa Subnetwork 3 up to 32 stations A1 B1 R OFF A1 B1
14. ong as foot 6 and foot 5 of PROFIBUS MPI PPI socket DB9F hole socket have the output of 9 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 486 838 2515546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater 5VDC or foot 7 and foot 2 have the output of 24V DC PFB R can be sure to get working power supply 5 RS485 signal terminal of PFB R Name of Function Color of Cable Signal Direction Signal Terminal Al Segment 1 RS485 Signal Negative Green Input output B1 Segment 1 RS485 Signal Positive Red Input output A2 Segment 2 RS485 Signal Negative Green Input output B2 Segment 2 RS485 Signal Positive Red Input output Ground Chassis Ground Shield Tabletting V Internal Functional Block Diagram DC DC DC DC Vecl Isolated Vec Isolated Aan I Im Ef i a D SUB 390 220 390 390 220 390 Al Bl A2 B2 Fig 5 1 Internal functional block diagram of mini PROFIBUS repeater PFB R 10 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 25 15543 FAX 86 838 25 15546 http www FOURSTAR dy com FOURSTAR HEEF User Manual for Mini PROFIBUS Repeater VI Major Application Scheme of Mini PROFIBUS Repeater The usage of Mini PROFIBUS Repeater is versatile and flexible It can achieve bus network tree network and mixed network topology Each application diagram is followed 1 Use Mini PROFIBUS Repeater PFB R to prolo
15. tion 4 Monitor and diagnose Through the LED indicator on Mini PROFIBUS Repeater one can monitor the working condition of PROFIBUS network and provide references for network diagnostic and troubleshooting 2193 Deyang FOURSTAR Electronic Technology Co Ltd TEL 86 838 2515543 FAX 486 838 2515546 http www FOURSTAR dy com FOURSTAR NERF User Manual for Mini PROFIBUS Repeater Mini PROFIBUS Repeater has following features 1 Its outline is similar to the common PROFIBUS bus connector plug Of compact size it covers little space Itis easily to be installed and needs no private power supply instead it can be directly plugged into PROFIBUS DP socket or MPI PPI socket Thanks to scientific development and the chip s high integration it comes true to install a repeater such complicated circuit inside a very small plug 2 Transparent transmission in the physical layer Mini PROFIBUS Repeater adopts bit transparent transmission in the physical layer having nothing to do with the upper layer protocol So it is applicable to all PROFIBUS protocols based on RS485 including PROFIBUS DP VO V1 V2 and various application rules including PROFIsafe Redundancy Ident Systems etc It is able to connect to multi master station for communication such as S7 FUNCTION Protocol secondary type master station communication it is also applicable to MPI Protocol PPI Protocol RS485 Free Port Protocol and other fieldbus or network such as MOD
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