User`s Manual
Contents
1. 0 0 cece teen eeeeas Bus Access Procedures 000 cece ett eee eee Profibus DP Communication Profile llle ees System Configuration and Equipment Classes 00 0c c eee eee Profibus DP Netwotk 4 tec deck oe aces ran nn ne Ae Bud Types of COMMUNICATION sr ee ee rie er ee Device Database du LER RS ae AUREUM met Protective FUNCIONS n sieg cece eke mr bene ouo denen oh cee e lant de be v WO DOIOGY as Sa en PS C Transfer Mode 2 22 22 Er re ee ee ae Segmentation with Repeaters 1 0 0 0 eect ete eee Installation of Profibus DP 02 00 c cece eee eee eee eee Wiring Profibus DP zs sai teat iw ol ln Constructing the Bus Cable for Profibus DP 0 000 c cece eee eens Trouble Shooting on Profibus DP Installation llle EMC Measures cnouxcvgeuemkxRIEXERERPREED UE Rex ar a EE Grounding and Shielding for Systems with Equipotential Bonding 4 Grounding and Shielding for Systems without Equipotential Bonding Capacitive By Pass Terminal GND 001 llsllelseeleee lee Surge Protection for Bus Leads Lightning Protection llle eee eee Static Discharge in Long Profibus DP Cables 000 cece cece nennen een 10 10 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29 31 33 1672611 03 2009 1672611 03 2009 Safety Information c Important Information NOTICE2. PLEASE NOTE Read these instructions carefully and look at the equipment to become familiar with the device before trying to install operate or maintain it The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure The addition of this symbol to a Danger or Warning safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death A DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury A WARNING WARNING indicates a potentially hazardous situation which if not avoided can result in death or serious injury N This is the safety alert symbol It is used to alert you to potential A CAUTION CAUTION indicates a potentially hazardous situation which if not avoided can result in minor or moderate injury CAUTION CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not avoided can result in equipment damage Electrical equipment should be installed operated serviced and maintained only by qualified personnel No responsibility is assumed by Schneider Electric for any con
3. installation 21 installation constructing the bus cable 23 installation trouble shooting 24 installation wiring 22 lightning protection 29 network components 13 static discharge in long cables 31 surge protection for bus leads 29 topology 17 Profibus DP communication profile 1 1 protection devices connection plan 30 connection rules 29 shield grounding 30 protective functions 16 R range effective 19 repeaters segmentation with 19 RS 485 18 S segmentation with repeaters 19 shield grounding for protection devices 30 shielding connections 28 shielding measures 26 single master 12 static discharge in long cables Profibus DP 31 surge protection 29 surge protection for bus leads 29 system configuration and equipment classes 12 T token passing ring 10 topology 17 Profibus DP 17 transfer mode 18 trouble shooting installation Profibus DP 24 W watchdog monitor 16 wiring in buildings 22 outside of buildings 22 wiring diagram Profibus DP 23 34 1672611 03 2009
4. the following topics Topic Page System Configuration and Equipment Classes 12 Profibus DP Network 13 Types of Communication 14 Device Database 15 Protective Functions 16 1672611 03 2009 11 Architecture of Profibus DP System Configuration and Equipment Classes Overview The Profibus DP can operate as a single master or as multi master Single Master This diagram shows you a Profibus DP Single Master System DP master Class 1 Profibus DP l BN Actuators Sensors Distributed inputs and outputs DP Slaves DP Slaves NOTE The shortest bus cycle time is achieved in single master operation Multi Master This diagram shows you an example of a Profibus DP Multi master System DP master DP master DP master Class 1 Class 2 Class 1 B LCLLLIILID m PLC PC Profibus DP l 3 UR Actuators Sensors Distributed inputs and outputs DP Slaves DP Slaves NOTE Communication with a slave is reserved only to the DPM1 Master which has been assigned for this slave during the configuration Equipment Classes There are 3 different equipment classes e DP master class 1 Typical devices are PLCs and PCs Schneider offers for example the TSX Quantum 140
5. to the last bus node without any other ground connections 3 Shield all bus nodes capacitive only This provides a discharge route for high frequency To do this use e g the GND 001 terminal interferences connection Note A transient current cannot flow without a galvanic connection 4 Referto the connection example and the details concerning shielding in the instructions for the corresponding device 1672611 03 2009 27 EMC Measures Capacitive By Pass Terminal GND 001 Overview Distributed grounding with capacitive by passing is used in systems without equipotential bonding Mount the Schneider by pass terminal GND 001 as shown in the following representations Connection Example This example shows the connection from the Profibus DP cable to the by pass terminal GND 001 Shielding Connection to rail Profibus DP cable entering switching cabinet Profibus DP cable exiting switching cabinet NM Making Shielding Connections This example shows the shielding connection with the Profibus DP cable 1 Copper shield foil included NOTE The by pass for the bus ends is to be prepared on 1 cable only 28 1672611 03 2009 EMC Measures Surge Protection for Bus Leads Lightning Protection Surge Protection for Bus Leads Up to 12 Mbps Signals To protect transmission systems from extraneous surges lightning the Profibus DP lead shou
6. 1672611 TeSys U LULCO7 Profibus DP Communication Module Beginner s Guide 03 2009 Schneider www schneider electric com ES E ec t ric Schneider Electric assumes no responsibility for any errors that may appear in this document If you have any suggestions for improvements or amendments or have found errors in this publication please notify us No part of this document may be reproduced in any form or by any means electronic or mechanical including photocopying without express written permission of Schneider Electric All pertinent state regional and local safety regulations must be observed when installing and using this product For reasons of safety and to help ensure compliance with documented system data only the manufacturer should perform repairs to components When devices are used for applications with technical safety requirements the relevant instructions must be followed Failure to use Schneider Electric software or approved software with our hardware products may result in injury harm or improper operating results Failure to observe this information can result in injury or equipment damage 2009 Schneider Electric All rights reserved 1672611 03 2009 Table of Contents Chapter 1 1 1 1 2 1 3 Chapter 2 Chapter 3 Safety Information 2 2 ie esha ada codec ee About the Book un Ha LS Architecture of Profibus DP 000s Characteristics of Profibus DP
7. CRP 811 00 and the TSX Premium TSX PBY 100 e DP master class 2 These are engineering configuration or diagnostic devices This type of device is used during the installation to configure the connected devices evaluate measurement values and configuration parameters and to get device states e DP slave This is a field device with either binary or analog inputs and outputs 12 1672611 03 2009 Architecture of Profibus DP Profibus DP Network Example of a Profibus DP Network with the CRP 811 This diagram shows you an example of a Profibus DP network with the 140 CRP 811 as the master PC with configuration software TSX Quantum with Profibus DP master Fa CPU T MB MB 74 140 CRP 811 00 A 490 NAE 911 00 Bus TAP Transmission Access Point with Profibus DP connector Bus begin Profibus DP connector Compact Compact l Os l Os Momentum Third party products Profibus DP node 1672611 03 2009 13 Architecture of Profibus DP Types of C
8. DP data lines must be run separately in metal cable ducts Wiring Outside of Buildings Generally the same rules apply for running lines outside of buildings as within However the following applies to bus cable Run in a suitable plastic tubing When burying cables only cable that is specifically designed for this purpose may be used Pay special attention to the permitted temperatures When running cables between buildings use surge protectors for bus lines lightning protection For baud rates over 500 kBaud fiber optics cable is recommended 22 1672611 03 2009 Installation Constructing the Bus Cable for Profibus DP Overview You must construct the bus cable for connecting Profibus DP devices by yourself A special Profibus DP cable twisted pair is required here The standard cable is available at Schneider Electric A special cable is required for the connection of the LULCO7 communication module see list of Trunk Cables in the LULCO7 Profibus DP Communication Module User Manual There are also different connectors for the connection of the LULCO7 communication module Connection Accessories for RS485 Wiring System List of Profibus DP connection accessories for RS485 wiring system Type of Master Part Number Customized Bus Connector LU9AD7 for the communication module NOTE For detailed informations on installing the connectors please refer to the respective connector s instructio
9. Installation Wiring in Buildings The following guidelines apply for wiring bus segments Type A bus cable which complies with Profibus DP standards is to be used The bus cable may not be twisted pinched or stretched A bus segment must be fitted with a termination resistor on both ends The corresponding slave must be live at all times so that the termination resistor is effective however Bus nodes that do not terminate a segment can be separated from the bus without interrupting regular data traffic Branch lines are not allowed In Cabinets Cable locations play a major role in the resistance to interference Therefore the following guidelines are applied Data lines must be separated from all AC and DC power lines gt 60 V A minimum spacing of 20 cm 7 9 in is to be kept between data lines and power lines AC and DC feed wires gt 60 V and lt 230 V must be run separately from AC and DC power feeds gt 230 V Separately means that the cables are in different cable bundles and ducts PG screws with integrated grounding are not allowed Cabinet lighting must be done with EMC safe lights and wiring Outside of Cabinets Cables must be run in metal cable ducting lines cable troughs ducts or tubing wherever possible Only wires of 60 V or shielded 230 V may be run in common cable ducts Dividers in metal cable ducts may be used as long as the minimum spacing of 20 cm 7 9 in is kept between wires Profibus
10. al isolation WE RE EE FEE Max Cable Length without repeater with 3 repeaters per Segment Baud Rates for 12 Mbit sec Cable 800 3200 m 2 624 10 498 ft 9 6 19 2 45 5 93 75 kbit sec 650 2 600 m 2 132 8 530 ft 187 5 kbit sec 300 1 200 m 984 3 936 ft 500 kbit sec 160 640 m 524 2 099 ft 1 5 Mbit sec 80 320 m 262 1 049 ft 3 6 12 Mbit sec 1672611 03 2009 19 Architecture of Profibus DP 20 1672611 03 2009 Installation of Profibus DP Overview This chapter comprises information concerning the installation and first operational steps A WARNING UNINTENDED EQUIPMENT OPERATION e These devices must be installed configured and used by qualified staff only e You must follow all current instructions standards and regulations e Check the function settings before starting the motor e Do not downgrade or modify these devices Incorrect configuration can cause unpredictable behaviour of the devices Failure to follow these instructions can result in death serious injury or equipment damage What s in this Chapter This chapter contains the following topics Topic Page Wiring Profibus DP 22 Constructing the Bus Cable for Profibus DP 23 Trouble Shooting on Profibus DP Installation 24 1672611 03 2009 21 Installation Wiring Profibus DP Guidelines for Bus Segment
11. bling and connections e bus connector screws e proper cable location e termination resistors e proper connectors for 12 MBaud special connectors with built in restrictors must be used e Check general contact problems with connections 24 1672611 03 2009 EMC Measures Overview This chapter comprises information concerning the EMC measures with Profibus DP communication What s in this Chapter This chapter contains the following topics Topic Page Grounding and Shielding for Systems with Equipotential Bonding 26 Grounding and Shielding for Systems without Equipotential Bonding 27 Capacitive By Pass Terminal GND 001 28 Surge Protection for Bus Leads Lightning Protection 29 Static Discharge in Long Profibus DP Cables 31 1672611 03 2009 25 EMC Measures Grounding and Shielding for Systems with Equipotential Bonding Central Shielding Measures Each cable shield should be galvanically earth grounded using FE PE grounding clamps immediately after the cable has been connected to the cabinet This example indicates the shielding connection from the Profibus cable to the FE PE rail PE FE rail FE Profibus cable Clamps provide contact with the cable Pop NOTE An equalization current can flow across a shield connected at both ends because of fluctuations in ground potential To prevent this it is imperative that there
12. c Compatibility Practical Installation Guidelines DEG999 You can download these technical publications and other technical information from our website at www schneider electric com Product Related Information Up to date information about Profibus DP is available from the Profibus Website http www profibus com as well as from the Profibus user organization Profibus Nutzerorganisation e V Haid und Neu Stra e 7 D 76131 Karlsruhe Germany or from the Profibus user organisation in your country User Comments We welcome your comments about this document You can reach us by e mail at techcomm schneider electric com 1672611 03 2009 7 1672611 03 2009 Architecture of Profibus DP Overview This chapter comprises basic information on the Profibus DP architecture What s in this Chapter This chapter contains the following sections Section Topic Page 1 1 Characteristics of Profibus DP 10 1 2 Profibus DP Communication Profile 11 1 3 Topology 17 1672611 03 2009 Architecture of Profibus DP 1 1 Characteristics of Profibus DP Bus Access Procedures Overview There are two different bus access procedures which handle the various communication requirements within the Profibus DP topology e token passing e polling This diagram shows you the Profibus DP topology with both bus access methods Token Passing DP master DP master Class 2 Clas
13. c frames from the slave to get information about the status of the slave In this phase only the first manufacturer independent bytes are of interest for the master During communication diagnostic frames are also requested by the DMP1 master but the original trigger is coming from the slave Each slave checks the application specific part of the diagnostic frame for changes In case a change is detected the data record exchanged cyclically with the master gets an indication added new diagnostic data The DPM1 master will react and request the diagnostic frame afterwards Electronic Device Description The TeSys U system is described by a GS file This file will be used by any Profibus DP configuration tool to get information about the device The file for LULCO7 is called TELEO94C GS The mark will be replaced for example by G for German E for English F for French and so on D for Default A WARNING UNINTENDED EQUIPMENT OPERATION Do not modify the GS file in any way Modifying the GS file can cause unpredictable behaviour of the devices Failure to follow these instructions can result in death serious injury or equipment damage NOTE If the GS file is modified in any way the warranty of Schneider Electric will expire immediately 14 1672611 03 2009 Architecture of Profibus DP Device Database Device Properties In Profibus DP the performance features of the devices are documented by the man
14. g distances however note that no more nodes may be added to the fiber optic segment besides the couplers 1672611 03 2009 Architecture of Profibus DP Segmentation with Repeaters When Should I Use a Repeater Repeaters can be integrated wherever the maximum cable length will be exceeded in a network segment or where the number of nodes exceeds the allowed number per segment Repeaters are used in these cases to increase the bus cable length or the number of nodes NOTE Repeaters on the ends of segments must just like the slaves be terminated respectfully Segmentation Example Effective Range The following methods are used depending on the position of the repeater within the segment e repeater with no termination resistor e repeater with one termination resistor e repeater with two termination resistors This diagram shows you an example of segmentation with bus terminations for repeaters and slaves PLC Segment 1 m R Er zz S i S Segment 2 Ld R S sl Segment 3 mmm Segment 4 S S Effective range Slave without termination resistor Slave with termination resistor Repeater without termination resistor Hepeater with termination resistor and potential isolation Repeater with 2 termination resistors and potenti
15. is potential equalization between all the attached installation components and devices This example indicates the system components and devices in a system with equipotential bonding Q Main switching cabinet Substation 1 Substation n PLC with DP master FE PE rail Profibus DP cable Equipotential bonding conductor gt 16 mm2 AWG 6 NOOR WD 26 1672611 03 2009 EMC Measures Grounding and Shielding for Systems without Equipotential Bonding Principle Overview NOTE It is recommended to ground and shield systems using equipotential bonding If this is not possible because of system or construction specific reasons then use distributed grounding with a capacitive coupling of high frequency interference signals This representation shows distributed grounding with capacitive coupling Main switching cabinet Substation 1 Substation n Quantum with DP master FE PE rail Profibus DP cable Capacitive by pass terminal GND 001 NOCGPOD Distributed Grounding with Capacitive Coupling This table shows you the steps in setting up distributed grounding with capacitive coupling Step Action Comments 1 Galvanically ground the shielding only to the end of the bus cable and with as much surface area as possible to the central cabinet 2 Runthe bus cable from there
16. l GND 001 capacitive 28 C cable fiber optic 18 cables static discharge 31 capacitive by pass terminal GND 001 28 characteristics of Profibus DP 10 communication profile Profibus DP 11 communication types 14 connection accessories 23 connection plan for protection devices 30 connection rules for protection devices 29 connections shielding 28 constructing the bus cable 23 D data control time 16 database 15 device database 15 identification 15 properties 15 device database 15 device description electronic 14 distributed grounding 27 E effective range 19 electronic device description 14 EMC measures Profibus DP 25 equipment classes 12 F fiber optic cable 18 first steps and installation Profibus DP 21 G grounding and shielding with equipotential bonding 26 without equipotential bonding 27 GS file 14 IEC 1158 2 18 installation Profibus DP 27 installation wiring Profibus DP 22 L lightning protection 29 M master slave establishment 74 phases 14 master slave polling 10 multi master 72 N network components Profibus DP 13 1672611 03 2009 33 Index P wiring installation Profibus DP Profibus DP 22 architecture 9 capacitive by pass terminal GND 001 28 characteristics 10 commissioning 21 EMC measures 25 grounding and shielding with equipotential bond ing 26 grounding and shielding without equipotential bonding 27
17. ld be equipped with suitable surge protection equipment once it extends outside a building The nominal discharge current should in this case be at least 5 KA The following lightning arrestors e g type CT MD HF5 and type CT B110 from Dehn und S hne GmbH amp Co KG may be used Addresses and order numbers for these devices can be found under Surge Protection Equipment For adequate protection of a Profibus DP cable two sets of protection equipment are required for each building The first set of protection devices type B110 located where the cable enters the building works as a lightning conductor the second type MD HF5 located near the first device works as a surge protection device Connection Rules for Protection Devices Before connection of the protection devices please observe the following rules e Install a functional ground equipotential bonding rail e Install the protection equipment near the functional ground to keep surge current path as short as possible Keep the lead to the functional ground as short as possible min 6 mm e The maximum lead length depends on the transfer rate e Attransfer rates up to 500 kBd you can configure a maximum of 4 outdoor segments with 8 pairs of protection devices CT B110 and CT MD HF5 e Attransfer rates of 1 MBd or higher you may only configure 1 outdoor segment with 2 pairs of protection devices e Do not confuse the IN and OUT ends of the lightning arrestor IN ou
18. n sheet Begin and End of Bus The Profibus DP connector with termination 490 NAD 911 03 is required at the beginning and the end of the bus These connectors emulate the line impedance It is recommended that at least one connector with diagnostics interface 490 NAD 911 05 is used Profibus DP cable wiring diagram for a TeSys U system Node Node Power Node Node Node Start of Bus TAP TeSys System End od Bus gn gn I A L3 rd Profibus A A rd Profibus y B He B BI L gn bal rd Profibus pA EI rd Profibus A A rd Profibus A B L 5 BI H B B B tT ava 490 NAD 911 03 490 NAD 911 24 05 LUSAD LUSAD 490 NAD 911 04 05 490 NAD 911 03 NOTE Bus testing device for testing the status of the bus cable is available BT200 1672611 03 2009 23 Installation Trouble Shooting on Profibus DP Installation Finding the Source of the Error When an error occurs check the configured hardware against the following list of error sources Compare configured module types with the existing modules Examine the voltage supply to all modules Compare configured addresses with the addresses specified on the bus adapter Examine the parameters for complex analog modules Check EMC and equipotential bonding precautions Test all ca
19. ng Gas Conductors grounding Insert the gas type surge protector in the rack beneath the cabinet connection terminals on the input side NOTE Further information about grounding and shield grounding can be found in the relevant installation instructions that come with the lightning arrestor 30 1672611 03 2009 EMC Measures Static Discharge in Long Profibus DP Cables Static Discharge Very long bus cables which have been laid but not yet connected are discharged as follows Step Action 1 Select the Profibus DP connector closest to the FE PE grounding clamp 2 Touch the metal of the connector housing to the cabinet s FE PE grounding clamp to discharge any static electricity Connect the bus connector to the device 4 Discharge the other Profibus DP cable connectors as described in steps 2 and 3 Notes NOTE During mounting the metal part of the Profibus DP connector is connected internally to the cable shield When the bus cable connector is inserted into the module s Profibus DP port a short connection between the shield and the FE PE is created automatically except for the TeSys U system 1672611 03 2009 31 EMC Measures 32 1672611 03 2009 Index A access protection 16 access to bus procedures 10 accessories 23 architecture of Profibus DP 9 bus access procedures 10 bus cable constructing 23 bus segment installation 22 by pass termina
20. ommunication Overview Besides logical point to point data transfers the Profibus DP protocol can also handle the following types of communication e broadcast communication An active node sends an unacknowledged message to all other nodes master and slaves e multicast communication control instructions An active node sends an unacknowledged message to a group of nodes master and slaves Master Slave Communication Phases The communication between the DPM1 and the DP slaves is split up into the following phases e parameterization and configuration phase e usable data transfer phase Master Slave Communication Establishment Before a DP slave can be integrated into the usable data transfer phase the DPM1 checks for whether the planned set configuration see Notes matches the real device configuration in the parameterization and configuration phase A device identification test is run for every slave checking whether the device is actually there itis the right type of device the address which is set on the device matches the station address on the bus the formats telegram length information and bus parameters are correct and e the number of configured inputs and outputs is correct NOTE The set configuration is created with a configurator based on the General Specification of Device GSD file for all slaves Diagnostic on Profibus DP As a part of establishing the communication the DPM1 master is requesting diagnosti
21. s 1 DP master Class 1 IC CLLILLIJ PLC PC Profibus DP A Actuators Sensors Distributed inputs and outputs DP Slaves DP Slaves pe Polling Token Passing Ring The token passing ring procedure is the basis for communication between the more complex active stations Master This is for creating bus access for several stations which all have the same rights A token is passed from station to station in a logical ring The token is passed to each and every station within a maximum definable token cycle time A station is given transmission rights for the duration of time that it has the token Master Slave Polling The master slave polling procedure guarantees a cyclic real time based data exchange between the station with transmission rights active station Master and its subordinates passive stations slaves In this case the master is able to pass data to the slave and or request data The services in layer 2 field bus data link in ISO OSI reference model organize this communication 10 1672611 03 2009 Architecture of Profibus DP 1 2 Profibus DP Communication Profile Overview This chapter contains information on the Profibus DP communication profile What s in this Section This section contains
22. sequences arising out of the use of this material A qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and the installation and has received safety training to recognize and avoid the hazards involved 1672611 03 2009 1672611 03 2009 About the Book q a At a Glance Document Scope This documentation comprises general information on the architecture and the installation of Profibus DP and the EMC measures to be taken Validity Note This manual is valid for LULCO7 V1 2 and later versions LULCO7 can be used with TeSys U power bases LUB 2B LUS 2S only LULCO7 is not compatible with the TeSys U controller bases LUTM Related Documents Title of Documentation Reference Number LULCO7 Profibus DP Module Instruction Sheet 1639544 LU9GC7 Profibus DP Tap Module Instruction Sheet 1639559 LU9AD7 Profibus DP Connector Instruction Sheet 1639560 LULCO7 Profibus DP Communication Module User s Manual 1672610 LULCO7 Profibus DP Module Acyclic Data Read Write with Siemens Application Note 1672612 TeSys U Communication Variables User s Manual 1744082 LU B LU S TeSys U Starters Instruction Sheet 1629984 LUCM LUCMT Multifunction Control Units User s Manual 1743237 LUCM LUCMT LUCBT LUCDT Control Units Instruction Sheet AAV40504 LUCA LUCB LUCC LUCD Control Units Instruction Sheet AAV40503 Electromagneti
23. t is impossible to satisfy all requirements with one method of transfer there are 3 different methods available for Profibus DP RS 485 is a method of transfer for universal applications in manufacturing technology It is the most widely used form of transfer in Profibus DP It guarantees high speed with simple and inexpensive cabling Twisted pair copper cable is used as the conductor Speeds from 9 6 kbit sec up to 12 Mbit sec can be defined This is defined uniformly for all devices during the configuration of the system and is based on the maximum bus cable lengths Network topology is a linear bus with active bus terminations on both ends The TeSys U on Profibus provides a RS 485 interface IEC 1158 2 is a method of transfer which is used in process automation with the Profibus DP PA physical profile This bit synchronous transfer method is based on two wire technology and is noted for its inherent safety and bus feed It can therefore be used in Ex applications as well Network topology is a tree or linear structure or can be a combination of both Fiber optic cable is used for applications where the environment is unstable heavy disturbance for potential isolation or for increasing the range at high transmission speeds The network topology of Profibus DP fiber optics segments is either a star or ring structure For connecting a fiber optic segment to an RS 485 transmission path fiber optic couplers are available When increasin
24. tdoor end e Make certain that you ground the shielding of the Profibus DP lead protective devices according to the type of lightning arrestor CT B110 or CT MD HF5 that is used 1672611 03 2009 29 EMC Measures Protection Device Connection Plan Protection device connection plan CT MD HF 5 CT B110 Switching cabinet Bus node Structure 1 Structure 2 Outdoor NSNOVUPOD Type and number of lightning conductors made by the firm Dehn und S hne GmbH amp Co KG suitable for a Profibus DP cable No Model Number per Group 1 CTMD HF5 2 2 CT B110 2 NOTE Information about assembly and connection of the cables can be found in the relevant installation instructions that come with lightning arrestor Shield Grounding with Protection Devices Direct or indirect shield grounding are offered by the protection devices An indirect grounding occurs using gas conductors In both cases EMC spring terminals grasp the input and output sides of the cable shield NOTE It is recommended to use direct shield grounding when the system permits it Types of shield grounding assignment Type of Grounding Technique Direct Shield Grounding Connect the shield of the incoming cable to the IN terminal and that of the outgoing cable to the OUT terminal The shields are now galvanically connected with PE Indirect Shield Grounding Connection of the shield as described for direct shield Usi
25. toring mechanisms are real time monitors with the DP master and DP slaves The length of the monitoring interval is defined during the configuration of the system Data Control Time The DPM1 monitors the usable data transfer of every DP slave with a separate Data Control Time DCT The monitor responds if an improper usable data transfer occurs within the DCT DP Slave Watchdog Monitor The DP slave runs a watchdog monitor for recognizing errors from the DP master or the transmission path If no data traffic with the assigned DP master is found within a watchdog interval then the DP slave Switches the outputs to a defined shut down value NOTE The DCT and the watchdog times are bus parameters which are defined during the configuration by the configurator and depend on the number of slaves Access Protection There is also access protection for the inputs and outputs of the DP slave during operation in multi master systems so that direct access only occurs from the master with the assigned rights 16 1672611 03 2009 Architecture of Profibus DP 1 3 Topology Foreword This chapter contains information on the Profibus DP topology What s in this Section This section contains the following topics Topic Page Transfer Mode 18 Segmentation with Repeaters 19 1672611 03 2009 17 Architecture of Profibus DP Transfer Mode Overview RS 485 IEC 1158 2 Fiber Optic Cable Since i
26. ufacturer and provided as an equipment data sheet and a device database file made available to the user The structure contents and coding for this device database are standardized They enable you to configure comfortably any number of DP slaves using various manufacturers configuration equipment The Profibus user organization archives this information by manufacturer and will provide information about the device database upon request Device Identification The identification number enables a DP master to identify the types of devices that are connected without any significant protocol overhead The master compares the Ident number of the connected DP device with the Ident number of the defined configuration data Application data transmission begins only when the proper device types with the correct station addresses are connected to the bus In this way a relatively high security from configuration errors is achieved Manufacturers must register an identification number for every DP slave and every DPM1 master with the Profibus user organization The Profibus user organization coordinates these identification numbers along with the device data More information can be obtained through the PNO Profibus user organization 1672611 03 2009 15 Architecture of Profibus DP Protective Functions Overview Profibus DP has protective functions that guard against incorrect parameterization or transfer equipment break down These moni
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