Network solutions according to IEC 61158/EN 50170

Network solutions according to IEC 61158/EN 50170 PROFIBUS is the successful, open fieldbus which can be used in a wide range of applications. PROFIBUS is a bus system for process and field communication in cell networks with only a few stations and field devices, and for data communication according to IEC 61158/EN 50 170. Automation equipment such as PLCs, PCs, HMI devices, sensors or actuators can communicate using a uniform bus. This means that a wide range of PROFIBUS products from Siemens or other vendors can be used together in one PROFIBUS network to solve automation tasks. PROFIBUS provides openness for interfacing standardized components from other vendors. Product Brief

Possible applications and benefits Component of TIA Totally Integrated Automation (TIA) represents a complete range of automation components comprising the maximum possible degree of integration, namely three-fold uniformity: A uniform software toolset supports all project phases covering hardware selection, programming, operation, diagnostics and maintenance. The tools access a common database. This reduces input requirements, and ensures consistency throughout the project. Uniform communication is possible on the networks covering the control level, MES level down to the field level. Special features PROFIBUS offers the following advantages for the new industrial environment: PROFIBUS is a powerful, open and rugged bus system which provides problem-free communication. The system is completely standardized, permitting simple connection of standardized components from different vendors. Configuring, startup and troubleshooting can be carried out from one point. This means that the freely-selectable communication facilities can be implemented extremely flexibly and simply in practice and are easy to modify. Secure investments resulting from compatible further developments. Network components for use in hostile industrial environments. Rapid assembly and fast startup on site as result of the FastConnect cabling system. Permanent monitoring of network components using simple and effective signalling strategy. High protection of investments, since existing plants can be expanded reaction-free. High ability resulting from ring redundancy with OLM. Data communication Automation level Processor field communication Fig. 1: Management Enterprize level Control level Field level Performance/transmission rate Assignment of bus systems and associated performance ranges Different bus systems Different bus systems are used to cover the various performance ranges: The AS-Interface and PROFIBUS bus systems are used for data exchange at the field level and use process or field communication in order to link actuators and sensors to a controller. Data exchange on the PROFIBUS is characterized by openness and extremely short response times, especially in the distributed I/O. AS-Interface PROFIBUS Industrial Ethernet Industrial Mobile Communication Industrial Ethernet is used for data communication down to the field level. It is used between PLCs, or between PLCs and intelligent partners (PCs, computers etc.). Industrial Ethernet offers industrial-compatible communication components with which both electrical and optical networks can be configured. The ranges are almost unlimited when using switching technology. In addition, the Industrial Mobile Communication (IMC) offered by SIMATIC NET provides facilities for mobile communication which can be easily incorporated into your network structure. Information is therefore available everywhere and at all times and mobile access to the intranet/ Internet is made possible. 2

Possible solutions PC-based Automation SIMATIC NET PN OPC server Mobile Panel SIMATIC S7-400 SIMOTION C/P SIMATIC HMI SIPART PS2 SIMATIC C7 S7-300 SIMOVERT MASTERDRIVES SIMODRIVE DP/PA link/coupler SIMODRIVE POSMO A ET 200iS ET 200S ET 200eco SITRANS F US SIMOREG MICROMASTER Fig. 2: Possible solutions with PROFIBUS SIMATIC NET offers a comprehensive, powerful range of products for industrial communication using the Industrial Mobile Communication, Industrial Ethernet, PROFIBUS and AS-Interface networks. The result is that rugged network components provide the backbone for the various demands of industrial communication (e.g. electrical, optical or wireless components, use in the production or process industry). Communications processors are used to connect stations to the network and are available in different designs and performance classes, as well as for different applications, depending on the target system. PROFIBUS is used to connect field devices such as distributed I/O stations or drives to automation systems such as SIMATIC S7, SIMOTION or PCs. The following different versions of PROFIBUS are available in line with the application sectors: Process or field communication PROFIBUS DP for fast, cyclic data exchange with field devices. PROFIBUS PA for process automation applications in intrinsically-safe areas. Data communication PROFIBUS FMS for data communication between PLCs and field devices. The PROFIBUS standardized to IEC 61158/EN 50170 is a powerful, open and rugged fieldbus system with short response times. PROFIBUS DP/PA is used if actuators/sensors on the machine or in the plant (e.g. field level) are widely distributed and can be spatially associated with one station (e.g. ET 200). The actuators/sensors are connected to the field devices which are provided with output data according to the master/slave procedure and deliver input data to the PLC or PC. PROFIBUS FMS is used for data communication between PLCs or between a PLC and intelligent partners (e.g. PCs, computers). Communication is possible with automation systems (e.g. PLCs, PCs) from different vendors. Communication with field devices with FMS interface is also possible. Safety Integrated with PROFIBUS Fail-safe automation systems are used to control processes to a safe status which can be directly achieved by switching off. In other words, fail-safe systems control processes whose direct switching off does not result in danger to persons or the environment. The application of fail-safe distributed I/O systems means that it is possible to replace the conventional safety design by PROFIBUS DP components. This applies, inter alia, to the replacement of switchgear for emergency-stop, safety door monitoring systems, and two-hand operation. 3

Possible applications Production automation Production lines with variable speeds or online control facilities for the plant, can be implemented using PROFIBUS DP e.g. in the food and drink industry. In order to permit fault-free production, it is essential to be able to flexibly modify variables. At the same time, plant availability is becoming increasingly important. Down times resulting from repairs are usually more expensive than appropriate monitoring of plants for wear or possible faults. Using powerful communication components it is possible to rapidly locate and signal faults. Process automation Process automation places high demands on performance and reliability and necessitates simple, safe operation of plants. PROFIBUS PA uses the fail-safe transmission technology defined in the international standard IEC 61158-2. This means that field devices in the hazardous area can be incorporated. The system is based on PROFIBUS DP which has been expanded for the intrinsically-safe area. The acyclic communication services of PROFIBUS DP(V1)/PA permit online access to device parameters, i.e. the process control systems have direct access to current field device data, to statuses and to diagnostics messages. Using PROFIBUS DP(V1)/PA, the field devices become an integral component of the company-wide automation concept, covering control, asset management, spare parts management and stockkeeping. Production automation Process automation 4

Possible applications Building automation Networking of large buildings, or parts of buildings, permits central or distributed access to all stations. Not only residential or functional buildings, but also all industrial plants contain electrical installations. Most equipment, including building services, is driven by electrical power, e.g. illumination, heating, air-conditioning, ventilation, shutters or access control. These systems must be controlled and monitored just like those for industrial automation. Higher-level automation tasks that are solved using powerful PROFIBUS devices can now also be linked to the distributed instabus EIB stations using the DP/EIB link. Access is then possible to the sensor signals of the electrical equipment, e.g. signals from temperature sensors, anemometers or simple pushbuttons. Building automation 5

0 1 0 1 PROFIBUS Networking possibilities electrical networks Siemens offers a comprehensive range of PROFIBUS network components for electrical, optical and wireless transmission systems. PROFIBUS is standardized according to IEC 61158/EN 50170 for universal automation (PROFIBUS FMS and PROFIBUS DP) as well as to IEC 61158-2 for process automation (PROFIBUS PA). PC S7-400 Electrical network The electrical network uses a shielded, twisted pair cable. The RS 485 interface operates using voltage differences. It is therefore less sensitive to interferences than a voltage or current interface. With PROFIBUS, the stations are connected to the bus using a bus terminal or bus connector (max. 32 stations per segment). The electrical network can be configured with a bus or tree structure. The individual segments are connected using repeaters. The transmission rate can be adjusted in steps from 9.6 kbit/s to 12 Mbit/s according to IEC 61158/EN 50170. The maximum segment length depends on the transmission rate. PROFIBUS PA with transmission according to IEC 61158-2 is used for intrinsically-safe applications. The transmission rate in this case is 31.25 kbit/s. Features of the electrical network Transmission procedure according to IEC 61158/EN 50170 for universal automation (PROFIBUS FMS/DP) as well as to IEC 61158-2 for the intrinsically-safe area (PROFIBUS PA) High-quality bus cable Transmission procedure: RS 485 (to EIA) Bus structure with bus terminals and bus connectors for connecting the PROFIBUS stations Simple, uniform mounting and grounding concept Simple installation using FastConnect system. PROFIBUS PA Intrinsically-safe area Fig. 3: Bus cable for PROFIBUS Connecting cable OP 17 DP/PA link ET 200M Repeater Network configuration for electrical PROFIBUS network Optical network The optical network uses fiber-optic cables as the transmission medium. The fiber-optic cable is provided with a coating. PG ET 200S ET 200X Repeater Drive Optical networks are particularly suitable for large distances. Plastic, PCF or glass fiber-optic conductors can be used. 6

Networking possibilities optical networks Optical PROFIBUS with OLMs Optical link modules (OLMs) permit the design of an optical network with a linear, ring or star structure. The redundant ring structure means that a network structure can be configured to satisfy increased availability demands. The maximum distance between two OLMs is 15 km. The transmission rate can be adjusted in steps from 9.6 kbit/s to 12 Mbit/s. OLM OLM OLM OLM Optical PROFIBUS with integral interface and OBT The optical PROFIBUS with integral interface and OBT is designed with a linear structure. A cost-optimized solution is available for this in the form of devices with an integral optical interface. Data terminals with RS 485 interface can be connected using an optical bus terminal (OBT). The maximum distance between two stations is 50 m when using a plastic fiber-optic cable. Special fiber-optic cables are available for covering distances up to 300 m. Features of the optical network Transmission link is insensitive to electromagnetic interference Suitable for large distances Electrical isolation is implemented Either plastic, PCF or glass fiber-optic cables can be used Tap-proof since no emission from cable Simple routing since the cable is light, preassembled cables are available and no grounding problems exist No additional lightning protection measures required when used outdoors. Fig. 4: S7-400 S7-300 Bus cable for PROFIBUS Glass fiberoptic cable PG/PC/OP with 5613 FO S7-300 with CP 342-5 FO ET 200S with IM 151 FO Individual cable lengths: plastic up to 50 m, PCF up to 300 m Drive Network configuration for optical PROFIBUS with OLMs ET 200M with IM 153-2 FO ET 200S DP station without integral optics OBT 830-IT connecting cable Further stations Fig. 5: System configuration for optical PROFIBUS DP with PROFIBUS OBT 7

0 1 0 1 PROFIBUS Networking possibilities mixed networks OLM OLM OLM OLM Mixed networks Mixed structures are possible with electrical and optical networks. The transition between the two media is implemented using the OLM. As far as communication between stations on the bus is concerned, there is no difference between the two-wire and fiber-optic technologies. A maximum of 127 stations can be connected to a PROFIBUS network. Wireless coupling Wireless coupling of individual or multiple PROFIBUS slaves or slave segments is possible using the PROFIBUS infrared link module (ILM). With a maximum transmission rate of 1.5 Mbit/s and a maximum range of 15 m, communication is possible with moving components, e.g. with automated guided vehicles (AGVs), or as a substitute for systems subject to wear (sliprings, contact conductors). Features of the wireless coupling Assembly without calibration devices as result of wide transmission angle Replacement of systems subject to wear (sliprings, contact conductors) Simple, fast replacement of electronics in event of fault by using independent wiring Fig. 6: S7-300 ET 200M Bus cable for PROFIBUS Glass fiberoptic cable OP 17 Master e.g. S7-300 ET 200X ET 200S Network configuration consisting of electrical and optical PROFIBUS ET 200S Slave e.g. ET 200L ILM ILM ILM Slave e.g. ET 200X Slave e.g. ET 200S Fig. 7: Coupling to mobile stations 8

Network selection criteria You can select the PROFIBUS network appropriate to your requirements using the listed criteria. Criteria Electrical network Optical network Wireless coupling RS 485 to IEC 61158/ EN 50170 IEC 61158-2 (PA) Plastic PCF Glass Infrared EMC Inter-building networking 1) 5) Range 2) Suitable for high transmission rate 4) Simple connector assembly 3) 3) Simple cable routing Equipotential bonding measures required Yes Yes No No No No Range of cables for special applications Use with moving stations Use in intrinsically-safe area 1) Lightning protection measures required 2) Depends on transmission rate 3) Trained personnel and special tool required 4) Careful routing necessary 5) Outdoor cable required (on request) Not relevant for this application Well suited Less well suited 9

network components The FastConnect system FastConnect PROFIBUS FastConnect is a system for fast, easy and fault-free assembly of copper PROFIBUS cables on PROFIBUS bus connectors. The system comprises three compatible components: FastConnect bus cables for fast assembly FastConnect stripping tool FastConnect bus connector for PROFIBUS The PROFIBUS FastConnect bus cables can also be connected to conventional bus connectors. The special design of the PROFIBUS FastConnect cables permits use of the FastConnect stripping tool with which the outer sheath and the braided shield can be precisely removed in one operation. The cable prepared in this manner is connected in the PROFIBUS bus connectors using insulation displacement. Measure the cable length to be stripped by positioning the cable on the template. Limit using the index finger of your left hand. Rotate stripping tool several times in the direction of the arrow to strip the cable. Insert the measured end of the cable into the tool. The limit for the insertion depth is the index finger of your left hand. With the stripping tool closed, pull off from end of cable. Tighten end of cable in stripping tool up to the limit. Remove protective foil from conductors. Advantages of FastConnect system The connection times for terminals are reduced by fast, easy stripping of the outer sheath and the braided shield in one operation Assembly faults, such as a short-circuit between shield and conductor, are avoided Simple assembly possible using preset FC stripping tool The contact assignments can be checked when closed through the transparent cover of the insulation displacement connectors and the color coding. Following stripping of the cable, it can be fitted directly in the PROFIBUS plug. Fig. 8: FastConnect system 10

network components The SpliTConnect system SpliTConnect SpliTConnect for fieldbus systems is used for configuring fieldbus segments according to IEC 61158-2 (e.g. PROFIBUS-PA) with field device connecting points. The bus cable is easy to assemble thanks to the FastConnect connection system (FastConnect stripping tool, FC process cable according to IEC 61158-2). The FC process cable is stripped in the same way as for FastConnect. Additional grounding of the SpliTConnect tap can be implemented by a contacting screw. The terminals can be connected via the FC process cable according to IEC 61158-2 or the SpliTConnect M12 outlet or M12 jack. The SpliTConnect coupler can be used to construct a PROFIBUS-PA hub by cascading SpliTConnect taps. By replacing the contacting screw with the SpliTConnect terminator, the SpliTConnect tap can be used as a bus terminating element. Fig. 9: SpliTConnect tap and terminator Fig. 10: SpliTConnect coupler Advantages of SpliTConnect The connection times for terminals are reduced by fast, easy stripping of the outer sheath and the braided shield in one operation Simple assembly possible using preset FC stripping tool Connection of terminals is simplified by using the FastConnect system The modular SpliTConnect system permits many different applications The number of types and parts are reduced by a uniform connection system for PROFIBUS PA Fig. 11: SpliTConnect M12 outlet Fig. 12: SpliTConnect M12 jack 11

Cables Type of cable Designation Features Field of application PROFIBUS can be designed as an electrical or optical network. The following cables are available for the various topologies, demands or fields of application. Distinguishing features of all PROFIBUS cables: Particularly suitable for installation in industrial environments subject to electromagnetic interference due to their double shielding. Grounding continuity can be implemented via the outer shield of the bus cable and the bus terminals ground contacts. Easy length determination due to printed meter markings on the cable. Bus cables with FastConnect technology The FastConnect (FC) bus cables are of a radially symmetric design which allows a stripping tool to be used. In this way, bus connectors can be assembled quickly and easily; sold by the meter The following types of silicone-free cables are available for designing PROFIBUS networks for different applications: PROFIBUS FC standard cable FC robust cable FC food cable FC ground cable Standard cable for universal use Special cable to withstand chemicals and mechanical stress Special cable for the food and drink industry Special underground cable FC trailing cable FC FRNC cable FC process cable Trailing cable for moving machine parts (stranded conductor) Halogen-free and flame retardant cable Bus cable for fieldbus systems according to IEC 61158-2 (Ex and non-ex areas) Bus cable without FastConnect technology PROFIBUS festoon cable Flexible cable ECOFAST hybrid cable SIENOPYR shipboard cable Shielded, twisted pair cable with circular cross-section; sold by the meter The following types of silicone-free cables are available for designing PROFIBUS networks for different applications: Special cable for festoons Special cable for use on machine parts where the cable is subject to torsional movements (stranded conductor) Hybrid cable for data transmission and power supply of ECOFAST stations (stranded conductor) Halogen-free, tread-resistant, flame retardant shipboard approved cable for laying on board ships and offshore installations 12

Cables (continued) Type of cable Designation Features Field of application Connecting cables PROFIBUS 830-1T connecting cable The 830-1T connecting cable consists of a twisted pair (stranded copper conductors) with a braided shield. It has a 9-pin Sub-D connector at each end. The two ends are terminated by a resistor combination (cannot be switched off). The PROFIBUS 830-1T connecting cable can be used to establish a connection between an electrical PROFIBUS interface and PROFIBUS stations (OLM, OBT and terminals) with up to 12 Mbit/s. PROFIBUS 830-2 connecting cable The 830-2 connecting cable consists of a PROFIBUS standard bus cable. It is preassembled with two 9-pin connectors (90 angled). One connector of the preassembled cable is fitted with a programming device interface. The 830-2 connecting cable is used to connect PROFIBUS stations (e.g. HMI devices) to PLCs for transmission rates up to 12 Mbit/s. Fiber-optic cables PROFIBUS fiber-optic standard cable Indoor fiber-optic cable Flexible fiberoptic cable SIENOPYR shipboard duplex fiber-optic cable Glass-fiber; sold by the meter or preassembled Routing indoors or outdoors; cable versions: Rugged standard cable for universal use Halogen-free, tread-resistant and flame retardant cable for laying in buildings Trailing cable for moving machine parts Halogen-free, tread-resistant, flame retardant shipboard approved cable for laying on board ships and offshore installations PROFIBUS plastic fiber-optic cable Plastic or PCF fiber-optic cable; sold by the meter or preassembled Plastic and PCF fiber-optic cables are used to configure optical PROFIBUS DP networks indoors. Duplex conductor Standard cable PROFIBUS PCF plastic fiber-optic standard cable Up to 80 m with low mechanical stress, e.g. laboratory setups Up to 50 m, with Kevlar strain relief elements Up to 400 m, with Kevlar strain relief elements 13

Electrical network components Bus connectors The RS 485 bus connectors for PROFIBUS are used to connect a PROFIBUS station or PROFIBUS network component to the bus cable for PROFIBUS. There are various versions of the bus connectors which are optimized for the devices to be connected. Bus terminals The PROFIBUS bus terminals permit connection of a bus station to a PROFIBUS network. Various versions are available: Up to 1.5 Mbit/s: RS 485 bus terminal Up to 12 Mbit/s: 12M bus terminal. The bus terminals have a prepared device connection for PROFIBUS stations. The stations are simply connected to PROFIBUS networks by plugging on the spur line with Sub-D connector. Multi-point connections are possible for the 12M bus terminal by directly mounting several terminals side by side (up to 32 stations per segment). Active terminating element The active RS 485 terminating element is used to terminate bus segments. The power supply is independent of the bus stations. The terminating resistor is powered separately from the other I/O components either permanently or by a voltage connected from the I/O. As a result of the bus system termination, the stations (e.g. ET 200M/S) can be coupled or decoupled as required without resulting in any malfunctions. Fig. 13: PROFIBUS bus connector Fig. 14: PROFIBUS bus terminal Fig. 15: Active terminating element RS 485 repeater The RS 485 IP 20 repeater connects two PROFIBUS or MPI bus segments with RS 485 technology to max. 32 stations, including repeaters. It enables transmission rates from 9.6 kbit/s to 12 Mbit/s (including 45.45 kbit/s for PROFIBUS PA). Fig. 16: RS 485 repeater The repeater is used: To increase the number of stations (max. 127 stations) and the possible distances To electrically isolate segments To regenerate the signal amplitude and timing 14

Electrical network components Diagnostics repeater Initiated by STEP 7 or COM PROFIBUS, the diagnostics repeater determines the bus system s topology and saves it in the internal diagnostics memory. In the event of a fault, the repeater automatically transmits a standard diagnostics message to the bus master containing information on: Affected segment Fault location (e.g. between stations Xand Y) Distance in meters of fault location from stations X and Y and from the repeater Type of fault The following faults are diagnosed: Open-circuit in data lines A, B Short-circuit between data line and shield Bus terminating resistor missing Sporadic faults are also detected. The error messages are displayed graphically in STEP 7 and COM PROFIBUS. They are completely incorporated into the SIMATIC system diagnostics (e.g. overview diagnostics, function "Signal system fault"). Power rail booster The power rail booster allows a PROFIBUS DP connection via a contact conductor as used, for example, with single-rail suspended railways or high-bay warehousing systems. The various PROFIBUS DP functions, such as diagnostics and PROFIsafe safety engineering via bus, can still be used. Fig. 17: Diagnostics repeater BT 200 hardware tester The BT 200 tester can be used during the installation phase to check the PROFIBUS cable. Installation faults are found rapidly and easily, and the installation engineers do not require any special PROFIBUS knowledge. The BT 200 permits the RS 485 interface of the PROFIBUS DP slave to be tested before the system is started up. The slaves which are accessible on the wired bus can also be listed, even without a master on the PROFIBUS DP. Fig. 18: Power rail booster Fig. 19: BT 200 hardware tester 15

Optical network components Optical link module OLM With PROFIBUS OLM (optical link modules), optical PROFIBUS networks can be configured in a linear, star or redundant ring topology. The transmission rate of a fiber-optic link is independent of the distance and can be up to 12 Mbit/s. Typical OLM applications include: PROFIBUS-based system buses Inter-building networking with glass FO cables Mixed networks with electrical and optical segments Networks with a wide expansion (road tunnels, traffic control systems) Networks with high availability requirements (redundant ring networks) OLM/G12-EEC for use at temperatures down to 20 C The optical link modules offer the following advantages: Automatic recognition of all PROFIBUS data transfer rates: 9.6 kbit/s to 12 Mbit/s including 45.45 kbit/s (PROFIBUS-PA). High availability by media redundancy. The distance between two OLMs in the redundant ring is only limited by the optical sensing range of the modules. Segmentable RS 485 interface (Sub-D female connector) Unlimited multimaster mode: extended segmenting function for error localization on fiber-optic cable and RS 485 segments Fast localization of faults: Indication of module status via floating signaling contact Inspection of fiber-optic cable quality: measuring output for optical receivers for logging and for validity check of FO cable line attenuation using a voltmeter Indication of fault at the point of origin, no indication of secondary faults High cascading depth: Line and redundant ring up to 124 OLMs (only limited by monitoring times) Wide range by use of glass fiber-optic cables up to a length of 15 km Fig. 20: PROFIBUS OLM Optical bus terminal OBT The OBT (optical bus terminal) is used to connect a PROFIBUS DP station without an integral optical interface or an existing RS 485 bus segment to an optical line. In this way, it opens up the advantages of optical data transmission for existing DP units or network segments in combination with units having an optical interface (e.g. 200S FO). The OBT is also used as an "outlet" for connecting mobile units (e.g. programming device) without interrupting the bus. The PROFIBUS DP station is connected to the RS 485 interface of the OBT by a cable terminated at both ends, e.g. 830-1T connecting cable. The OBT is integrated into the optical line by two optical interfaces. Fig. 21: PROFIBUS OBT The following optical transmission media can be connected to the OBT: Plastic FO cables, preassembled with 2 2 simplex connectors, max. 50 m PCF FO cables, preassembled with 2 2 simplex connectors, max. 300 m. The OBT offers the following advantages: Existing units with electrical interfaces and existing bus segments can be linked to new optical networks Economical solution for simple optical networking Time savings resulting from simple and fast assembly of fiber-optic cable connectors on site. 16

Wireless network components Infrared link module ILM The infrared link module (ILM) enables a wireless PROFIBUS coupling for all protocols with a range of up to 15 m. Individual stations or slave segments can be linked at a transmission rate of up to 1.5 Mbit/s. The ILM is used: For communication with mobile stations, e.g. automated guided vehicles (AGVs) For communication with changing stations, e.g. stations along conveyor lines For fast system assembly and temporary configurations, e.g. test setups As a substitute for systems subject to wear, e.g. sliprings, contact conductors An ILM illuminates a circle 4 m in diameter from a distance of 11 m. The ILM offers the following advantages: Assembly without calibration devices as result of wide transmission angle Replacement of systems subject to wear (sliprings, contact conductors) Simple, fast replacement of electronics in event of fault by using independent wiring. Fig. 22: PROFIBUS ILM 17

Possible connections The possible connections between an electrical or optical network and a CP are made using various network components. CP 342-5 PROFIBUS FastConnect RS 485 bus connector SIMATIC S7-300 PROFIBUS FC standard cable Fig. 23: Example of connection for electrical networking with PROFIBUS FastConnect RS 485 bus connector PROFIBUS module, e.g. CP 5613 PROFIBUS FastConnect RS 485 bus connector plug 180 PROFIBUS bus cable Bus terminal 12M for connecting bus stations to PROFIBUS PROFIBUS bus cable Fig. 24: Example of connection for electrical networking PROFIBUS module, e.g. CP 5613 PROFIBUS OLM PROFIBUS FastConnect RS 485 bus connector plug 180 Preassembled glass FO cable PROFIBUS FC standard cable Fig. 25: Example of connection for optical networking 18

Possible connections (continued) PROFIBUS module, e.g. CP 5613 FO CP 342-5 FO (IM 153-2 FO, IM 151, BM 143 DESINA) Plastic FO cable with simplex plug PROFIBUS PCF or plastic FO cable Fig. 26: Example of connection for optical networking with plastic fiber-optic cable DP/PA coupler TAP TAP Coupler TAP PROFIBUS PA SITRANS P SITRANS F SITRANS P Fig. 27: Example of connection for intrinsically-safe network PROFIBUS FC standard cable PROFIBUS FC standard cable Fig. 28: Example of connection for wireless data transmission with ILM 19

Network transitions for PROFIBUS Network transitions between Industrial Ethernet, PROFIBUS, AS-Interface or EIB are implemented using links, PLCs or PCs. In the last two cases, integral interfaces and communications processors (CPs) can be used for the network transition. Network transitions implemented using a link pass on the data from one network to the next without further processing. These network transitions are the DP/PA link, the DP/PA coupler, the IE/PB link, the DP/EIB link or the DP/AS-Interface for transitions between the EIB, AS-Interface, PROFIBUS and Industrial Ethernet networks. With PLCs, e.g. the SIMATIC S7-300 or S7-400, data is exchanged between the individual networks using communications processors or integral interfaces. Linking of the data is either PLC based or PC based and thus passed on to the other network already preprocessed. PROFInet network transition with proxy functionality PROFInet is used by Siemens to implement Component based Automation. The advantages provided by component technology which have already been established in the software world are used for modular machine and plant building. In this manner it is possible to achieve exceptional increases in productivity for engineering and startup. A decisive contribution is made by the uniform communication. PROFIBUS segments can be linked to Industrial Ethernet using PROFInet proxy devices. This connection can be made using either a solution with SIMATIC WinAC PN or via the SIMATIC NET IE/PB link. It is then possible to use all PROFIBUS standard slaves unchanged for Component based Automation. S7-200 IE/PB link PC with SIMATIC WinAC PC PC with PN OPC server SIMOTION P S7-400 SIMOTION C230-2 S7-300 1) S7-300 S7-200 DP/AS-Interface link S7-300 PG 1) Also PROFInet capable DP/EIB link Fig. 29: Examples of network transitions for PROFIBUS 20

Network transitions with links DP/PA link or DP/PA coupler The DP/PA link or DP/PA coupler implements the transition between PROFIBUS DP and PROFIBUS PA. DP/PA link The DP/PA link is used for large quantity frameworks and high timing requirements. The DP/PA link is a slave on PROFIBUS DP and a master on PROFIBUS PA. The programmable controller/automation system addresses the field devices via the DP/PA link as a modular slave whose submodules are the PA units. DP/PA coupler The DP/PA coupler is used for small quantity frameworks and low timing requirements. When the DP/PA coupler is used, the data transfer rate on PROFIBUS DP is limited to 45.45 kbit/s. The quantity breakdown is defined either by the maximum number of addressable slaves (field devices) or by the maximum cycle time. IE/PB link The IE/PB link, as a self-contained component, creates a smooth transition between Industrial Ethernet and PROFIBUS. Thus, for example, HMI systems can simply access field devices on PROFIBUS from Industrial Ethernet. Vertical integration is then possible from the operations management level down to the field level. The IE/PB link supports the PROFInet functionality. DP/AS-Interface link The DP/AS-Interface link provides a network transition between PROFIBUS DP and the AS-Interface. It is a PROFIBUS DP slave (according to EN 50170) and an AS-Interface master (according to EN 50 295) and enables the AS-Interface to be operated on PROFIBUS DP. Fig. 30: DP/PA link or DP/PA coupler Fig. 32: DP/AS-Interface link DP/EIB link The DP/EIB link enables connection of the two open standard communication systems PROFIBUS DP and EIB (for production and process automation and for building automation respectively). Fig. 31: IE/PB link Fig. 33: DP/EIB link In this way, EIB for building automation is integrated into PROFIBUS DP. 21

Possible connections Overview The SIMATIC NET communications processors can be used for applications associated with production automation or process automation. Their standardized openness in compliance with international standards means that different components can communicate with one another. A particular feature is their ruggedness in industrial environments. Effectiveness and efficiency are essential in the system component concepts for solving automation tasks. Very high data transfer rates are therefore required. The communications processors provide a constant data throughput as a result of their protocol preprocessing. They offer fast response times at a constantly high level, and eliminate varying communication performances. The CPs relieve the data terminal of communications tasks, and only occupy a few resources there. PLC as communications element PLCs are extremely important in the world of automation. Industrial communication is the core factor, where the CPs play an important role. They offer the following advantages: CPs for all SIMATIC formats, e.g. SIMATIC S7-300/-400. Open communication based on standards means that SIMATIC can communicate with any other devices. SIMATIC NET increases the availability using networked, modular subsystems, for example with the power supply in individual circuits. S7-300 S7-400 Fig. 34: Communications processors for SIMATIC S7 22

Possible connections Communications processors for SIMATIC S7 The communications processors have all been designed for use in hostile industrial environments, and can be used within a wide temperature range. They also have marine approval (ABS), enabling them to be used on ships or offshore installations. The CPs permit S7 communication (client, server, multiplexing), S5-compatible communication and PG/OP communication as standard. CPs for S7-300 and S7-400 The CP 342-5, CP 342-5 FO and CP 343-5 communications processors provide the connection for SIMATIC S7-300 and SIMATIC C7, as well as CP 443-5 Basic and Extended for SIMATIC S7-400 to PROFIBUS. They are a PROFIBUS DP master or slave, or a PROFIBUS FMS master, with an electrical or optical interface up to 12 Mbit/s. The communications processors are easy to configure, and can be programmed via PROFIBUS. They provide cross-network PG communication using S7 routing, and can be replaced without having to use a programming device. The PROFIBUS communications processors for SIMATIC offer the following advantages: Expansion of process I/O on SIMATIC S7-300 by several PROFIBUS DP interfaces Flexible use of process I/O by dynamic activation of DP slaves Use of several CPs enables design of an automation solution oriented according to subprocessors Many possible uses and optimization of applications by active transmission of data with S7 communication Comprehensive HMI concept using multiplex function with OP communication Suitable for closed-loop control tasks through SYNC/FREEZE and equidistant bus cycle (see also page 24) Fig. 35: CP 342-5 for S7-300 Fig. 36: CP 443-5 for S7-400 Fig. 37: CP 343-5 for S7-300 Comprehensive diagnostics is provided by NCM S7, including CP operating state, general diagnostics and statistics functions, connection diagnostics, diagnostics buffer. Configuring is carried out using the NCM S7 option package for PROFIBUS (integrated in STEP 7) Time synchronization is provided (with CP 443-5 Basic and Extended) Increase in plant availability through redundant connection of process I/O (e.g. ET 200M) in the SIMATIC S7-400 fault-tolerant system (with CP 443-5 Basic and Extended) Addition of distributed I/O during operation (CP 443-5 Extended) 23

Possible connections Communications processors for SIMATIC S7 You can use the following selection table to determine the functions of the individual communications processors for SIMATIC. S7 communication S5 C 1) PROFIBUS-FMS Time Hardware PROFIBUS DP DP slave Master class 2 Master class 1 Read Write Info. / Report USEND URECV BSEND BRECV Put/Get Server Put/Get Client CP 5431 FMS/DP SIMATIC S5 Route 24 PG/ OP Faulttolerant communication Receiver Transmitter In faulttolerant system In standard system 2) IM 308-C 3) 3) CP 342-5/ CP 342-5 FO SIMATIC S7-300 SIMATIC C7 CP 343-5 CP 443-5 Basic SIMATIC S7-400 4) 4) CP 443-5 Extended IM 467 IM 467 FO 1) S5-compatible communication; means SDA (PLC/PLC connection) and SDN services of PROFIBUS layer 2 2) Plus SRD services of PROFIBUS layer 2 3) DP master and DP slave cannot be used simultaneously 4) Fault-tolerant DP master communication and S7 communication can be alternately used G_IK10_deP0100s

Possible connections Communications processors for PGs/PCs In addition to programmable controllers, PCs and programming devices (PG) are becoming increasingly significant for the implementation of flexible industrial production processes. Their flexible programming permits rapid adaptation of the production system to the automation task. Using powerful communication structures, automation tasks can now be implemented economically and with the required flexibility. System connection for PG/PC PC as communication element The PC is becoming increasingly important for industrial communication. Combined with real-time applications, e.g. with Windows NT, it provides an ideal basis for visualization (e.g. WinCC). Together with SoftControl software, the PC is now encountered in communication tasks which previously could only be solved by a PLC. The SIMATIC NET PC communications processors offer the following advantages: CPs for PCI or PCMCIA format Flexible use according to resource requirements in the PC: CPs with or without own microprocessor Simple linking to system environment and Office applications using open, standardized interfaces, e.g. with the OPC server. Note: The configuration tools required for the SIMATIC NET communications processors for PGs/PCs are included in all software packages. The software executing under Windows is present on the SIMATIC NET CD for Windows operating systems, including the associated manuals in pdf format and further comprehensive information on SIMATIC NET products and communication. Fig. 38: Communications processors for programming devices/pcs 25

Possible connections Communications processors for PGs/PCs Communications processors with microprocessors CP 5613/CP 5613 FO, CP 5614/CP 5614 FO The CPs are PCI cards and enable PCs and SIMATIC PGs/PCs to be connected to PROFIBUS at up to 12 Mbit/s. Electrical connections (CP 5613/CP 5614) and optical connections (CP 5613 FO/ CP 5614 FO) are possible. The CP 5613 and its optical version are DP masters, the CP 5614 and its optical version are DP masters or DP slaves. The CP 5613 is used to provide highperformance support on the PC (PC based Control, numeric control, robot control). These communications processors support the following communications services in combination with the corresponding software: PROFIBUS DP master according to IEC 61158/EN 50170 PROFIBUS DP slave interface according to IEC 61158/EN 50 170 on a PCI card (only CP 5614/CP 5614 FO) PG/OP communication with STEP 5 and STEP 7 S7 communication S5-compatible communication (SEND/RECEIVE) on basis of FDL interface PROFIBUS FMS according to IEC 61158/ EN 50170 Communications processors with a microprocessor provide the following advantages: Fastest possible access to process data via dual-port RAM OPC as standard interface Data consistent throughout the process from one DP cycle High computing performance available in PC through outsourcing from host CPU Fast startup possible resulting from Plug&Play and diagnostics tools Use for motion control applications implemented by support of equidistant mode Simple portability to other operating system environments through dual-port RAM interface System Hardware Software packages Explanation SIMATIC PC CP 5613/ CP 5613 FO; CP 5614/ CP 5614 FO PC applications CP 5613/CP 5613 FO CP 5614/CP 5614 FO CP 5511 CP 5512 CP 5613 PG applications CP 5511 CP 5512 Fig. 39: System connection for PGs/PCs Fig. 40: CP 5613 / CP 5613 FO Use also at high temperature in industrial environment. OPC servers are included in the scope of delivery of the communications software DP access via DP RAM; DP-5613 S7-5613 FMS-5613 DP access via DP RAM; DP-5613 S7-5613 FMS-5613 SOFTNET-S7 SOFTNET-DP SOFTNET-DP slave STEP 7 NCM S7 for PROFIBUS For open-loop control applications For multiprotocol; more than 8 stations, several CPs in one PC Monoprotocol; up to 8 stations Fig. 41: CP 5614 / CP 5614 FO For parameterization of existing plant with SIMATIC S7; for configuring of S7 CPs (NCM S7) 26

Possible connections Communications processors for PGs/PCs Communications processors without microprocessors CP 5511, CP 5512, CP 5611 The CPs enable PGs/PCs and notebooks to be connected to PROFIBUS at up to 12 Mbit/s. The CP 5511 and CP 5512 are PCMCIA cards for PCs and notebooks with PCMCIA slot, the CP 5611 is a PCI card for PGs/PCs with PCI slot. These communications processors offer the following advantages: Cost-effective interfacing As PROFIBUS DP master class 1 or master class 2 with SOFTNET-DP As PROFIBUS DP slave with SOFTNET-DP slave To S7 communication with SOFTNET-S7 OPC as standard interface Uniform procedure and configuration functionality with NCM PC and STEP 7 Designed for use in industrial environments Fig. 42: CP 5511 Fig. 43: CP 5512 Fig. 44: CP 5611 27

0 1 Possible connections Communications processors for PGs/PCs PC/Windows PC SIMATIC NET OPC scout WinCC OPC client Microsoft Office OPC client FMS OPC server DP OPC server S7 OPC server S5 OPC server PN OPC server SNMP OPC server DX OPC server (available soon) FMS protocol DP protocol S7 communication S5-compatible communication (send/receive) PROFInet protocol SNMP DCOM FMS-PC S7-400 S7-300 SIMATIC S5 (only SEND/RECEIVE) SIMATIC S5 PROFIBUS ET 200X Industrial Ethernet S7-PC Fig. 45: System integration with OPC server Possibilities with OPC OPC (OLE for Process Control) is used from Windows NT onwards as an expansion of the COM and DCOM communications interfaces (Component Object Model and Distributed COM respectively) for the application software. The basic principle of OPC is that OPC client applications communicate on a standardized, open and multi-vendor interface with the OPC server. Interfacing is possible to OPC-compatible Windows applications (Office 97 or HMI systems) which are already available on the market. The OPC server permits simple use of different networks and different protocols through this uniform interface. The various OPC servers are included in the communications software. The following communication possibilities are available for PROFIBUS using OPC: DP communication for PROFIBUS DP FMS communication for PROFIBUS FMS S7 communication S5-compatible communication (SEND/RECEIVE) on basis of FDL interface The S7 OPC servers offer: Data access interface 2.04 Alarm & event interface 1.02 (simple event) Standardized access to SIMATIC S7 and SIMATIC S5 for OPC-compatible applications under Windows (to Windows NT) Uniform automation products from different vendors Identical and easy-to-use operating interface for different components Accessible from any computer in the LAN/WAN High-performance data access via the custom interface (C++) Easy-to-use via the automation interface (VB) or the supplied OCX DataControl Grouping of variables (items); thus a large amount of data can be processed within a short time 28

Possible connections Communications processors for PGs/PCs You can use the following selection table to determine the functions of the individual communications processors for programming devices/pcs. S7 communication PROFIBUS DP Read Write PG/ OP OPC Software Operating system Hardware USEND/ URECV BSEND/ BRECV Put/Get server Put/Get client DP slave Master class 2 Master class 1 Windows XP Pro Windows 2000 Pro Windows NT Faulttolerant communication S5 C PROFIBUS FMS Info/ report 5) 1) 4) CP with DP-Base 4) DP-5613 S7-5613 FMS-5613 CP 5613 CP 5613 FO CP 5614 CP 5614 FO 2) 3) 2) 3) SOFTNET-DP 2) SOFTNET-DP slave CP 5511 (PCMCIA 16 Bit) SOFTNET-S7 CP 5611 (PCI) STEP 7 2) 3) 2) 3) SOFTNET-DP 2) SOFTNET-DP slave SOFTNET-S7 CP 5512 (PCMCIA 32-bit cardbus) STEP 7 1) Included in delivery of CP 5613/CP 5614 2) DP master and DP slave cannot be used simultaneously 3) Master class 1 and master class 2 cannot be used simultaneously on one CP 4) DP-Base and CP-5613 cannot be used simultaneously 5) Only with CP 5614 You can find further information on the Internet: http://www.siemens.de/automation/net/ik-info 29

SIMATIC NET contact partners Argentina Buenos Aires Siemens S.A. Buenos Aires Mr. Parisi Gral. Roca 1865, Ruta 8, km 18 C.C.32 1650 San Martin Prov. de Buenos Aires +54 (11) 4340 8324 Fax +54 (1) 4738 7271 Guillermo.Parisi@siemens.com.arg Australia Melbourne Siemens Ltd Mr. Bhat 544 Church Street Melbourne, VIC 3121 +61 (2) 436-8780 Fax +61 (2) 436-8624 ashish.bhat@siemens.com.au Austria Vienna Siemens AG Mr. Dürauer Siemensstr. 90 A-1211 Wien +43 1/1707-22305 Fax +43 1/1707-52099 gerhard.duerauer@siemens.at Belgium Bruxelles Siemens S.A. Mr. De Wever Charleroisesteenweg 116 B-1060 Brüssel +32 2536-7531 Fax +32 2536-2387 Jurgen.DeWever@siemens.be Bulgaria Plovdiv Siemens Ltd. Mr. Hennawi 27, Victor Emanuel Str. Alexandria Smouha +20 (3) 425 1007 Fax +20 (3) 425 1009 SEAALEX@Alexnet.com.eg Canada Toronto Siemens Electric Limited EAD Mr. Zafiris 80 Walker Dirve Brampton, Ontario, L6T 4H6 +1 905 458 337 Fax +1 905 458 3398 george.zafiris@siemens.ca China Beijing Siemens Ltd. China Beijing Office Mr. Köhler 7, Wangjing Zhonghuan Nan Lu Beijing, 100102, P.R. China Chaoyang District +86 (106) 436 1888 (ext.3340) Fax +86 (106) 438 9213 Juergen.Koehler@pek1.siemens.com.cn Denmark Kopenhagen Siemens S/A Mr. Nielsen Borupvang 3 2750 Ballerup +45 4477 4534 Fax +45 (44) 77 4019 mni@siemens.dk Finland Helsinki Siemens OY Mr. Pyykko Majurinkatu 6 FIN-02601 Espoo +358 9 511 30 55 Fax +358 9 511 38 77 tero.pyykko@siemens.fi France Paris Siemens S.A. Mr. Brassier 39-47, Boulevard Ornano F-93527 Saint Denis/Paris +33 1 4922-3928 Fax +33 1 4922-3951 patrick.brassier@p4.siemens.fr Greece Athen Siemens A.E. Mr. Marantidis Paradissou & Artemidos GR-15110 Amaroussio Athen +30 (1) 6864 564 Fax +30 (1) 6864 556 Nikolaos.Marantidis@siemens.gr India Mumbai Siemens Ltd. Mr. Apte Sector 2 Navi Mumbai 410 208 Plot No. 2 Kharghar Node +91 (22) 493 1350 Fax +91 (22) 495 0552 Hemant.Apte@krg1.siemens.co.in Ireland Dublin Siemens Ltd. Power & Automation Division Mr. Cahill 8, Raglan Road Dublin 11 Ballsbridge +353 (1) 603 2255 Fax +353 (1) 603 2299 caiman.cahill@siemens.ie Italy Milano Siemens S.p.A. Mr. Augelli Viale Piero e Alberto Pirelli 10 I-20126 Milano +39 02/6676-2894 Fax +39 02/6676-2925 antonio.augelli@siemens.it Japan Tokyo Siemens K. K. Automation & Drives Dept. Mr. Hallett 20-14, Higashi-Gotanda 3-chome Tokyo 141-8641 Takanawa Park Tower Shinagawa-ku +81 (3) 5423-6837 Fax +81 (3) 5423-8730 roger.hallett@skk.siemens.co.jp Netherlands Den Haag Siemens AG Mr. Brunott Prinsesbeatrislaan 26 NL-2500 Al Den Haag +31 (70) 333-3905 Fax +31 (70) 333-3885 herm.brunott@siemens.nl New Zealand Auckland Siemens Ltd., Auckland Office Mr. Richmond 300 Great South Road Greenlane, Auckland 5 +64 (9) 520 3033 Fax +64 (9) 520 1556 Norway Oslo Siemens A/S A&D Mr. Bakke Ostre Aker vei 90 N-0518 Oslo 5 +47 22 63 43 34 Fax +47 22 63 33 90 olav.h.bakke@siemens.no Philippines Manila Siemens Inc. Mr. Bonifacio 169 H.V. Dela Costa Street 1227 Makati City 10/F Salcedo Towers, Tower B Salcedo Village +63 (2) 814 9869 Fax +63 (2) 814 9894 buddy.bonifacio@siemens.com.ph Portugal Lisboa Siemens S.A. Dep. Energia e Indústria / Div. Instrucao SIMATIC Mr. Filipe Rua Irmaos Siemens 1 PT-2720-093 Amadora +351 (1) 417 8838 Fax +351 (1) 417 8050 Sergio.Filipe@lis1.siemens.pt South Africa Johannesburg SIEMENS Ltd. Mr. Perold 300 Janadel Avenue 1685 Halfway House/Siemens Park +27 (11) 652-3161 Fax +27 (11) 652-3697 CornuP@siemens.co.za South Korea Seoul Siemens Ltd. Mr. Kim 746, Yeoksam Dong Seoul 135-080 12th floor, P.M.K. Building Kangnam-gu +82 (2) 527 7700 Fax +82 (2) 527 7719 KIMIS@siemens.co.kr Spain Madrid Siemens S.A. Mr. Alvarez-Vargas Ronda de Europa 5 E-28760 Tres Cantos (Madrid) +34 91/514-7120 Fax +34 91/514-7019 iavargas@ssa.siemens.es Sweden Stockholm Siemens AE Mr. Jonsson Johanneslundsvägen 12-14 S-19487 Stockholm +46 8/728-1243 Fax +46 8/728-1128 lars.jonsson@sab.siemens.se Switzerland Zuerich Siemens Schweiz AG Mr. Jehle Freilagerstrasse 28 CH-8047 Zürich +41 1 495 4823 Fax +41 1 406 5362 daniel.jehle@siemens.ch United Kingdom Manchester Siemens PLC Mr. Holliday Sir William Siemens House Princess Rd. GB-M20 2UR Manchester +44 (161) 446-5194 Fax +44 (161) 446-6201 hollidayb@plcman.siemens.co.uk U.S.A. Norcross, GA Siemens Energy & Automation Mr. Hillermann 5300 Triangle Parkway US-Norcross, GA 30092 +1 770 871 3800 Fax +1 770 871 3999 egon.hillermann@sea.siemens.com 30

Abbreviations, explanations Term Meaning Explanation BFOC Bayonet fiber-optic connector Fiber-optic connector, ST-compatible BT 200 BT 200 bus tester Hardware test device for PROFIBUS CP Communications processor Interface module for communication tasks CPU Central processing unit Central controller module, e.g. for SIMATIC S5/S7 DP Distributed I/O Input or output modules decentralized from the CPU (central processing unit of the PLC). The link between the programmable controller and the distributed I/O devices is made via the PROFIBUS DP bus system. EEC Extended environmental conditions EIB European Installation Bus Registered trademark of the European Installation Bus Association, Brussels Intrinsically-safe Ex safety measure according to DIN EMC Ex Electromagnetic compatibility Intrinsically-safe protective measure according to DINEN50020 FC FastConnect Fast assembly system FMS Fieldbus Message Specification FO Fiber-optic Relevant to designated modules, may also be used in areas where there is a risk of explosion. (Follow specifications!) AGV Automated guided vehicle Moving, unmanned machine parts Top partial layer of layer 7 for PROFIBUS; it covers the following functions: protocol machine, PDU compilation, and coding/decoding and interpretation of the protocol data element. HMI Human-machine interface Operator control and visualization products/systems at Siemens IEC International Electrotechnical Commission ILM Infrared link module Infrared network component LAN Local area network FOC Fiber-optic cable MES MIS Manufacturing Execution System Management Information System Higher-level software system Higher-level software system OBT Optical bus terminal Network component for PROFIBUS OLM Optical link module Network component for PROFIBUS OPC OLE for Process Control Standard interface for access to process data 31

Abbreviations, explanations Term Meaning Explanation OP Operator panel PA Process automation Protocol profile based on PROFIBUS DP with intrinsically-safe transmission techniques in accordance with IEC 61158-2 PCF Polymer cladded fiber Application for plastic fiber-optic cables for large distances PNO PROFIBUS Nutzerorganisation e.v. (PROFIBUS International) International organization for PROFIBUS users and suppliers PROFIBUS Process fieldbus European fieldbus standard according to EN 50 170 PROFInet (PN) Ethernet Standard of PROFIBUS International (PI); basis for Component based Automation Protocol Transfer specification for data communication. This specification determines both the formats of the messages and the data flow during data transmission ST connector Straight tip connector Connector for fiber-optic cables with bayonet lock (ST = registered trademark of AT&T) TIA Totally Integrated Automation Totally integrated and uniform system for automation at Siemens for uniform configuring/programming, data management and communication PLC Programmable logic controller Topology Type of wiring arrangement between stations The most important basic forms are: Bus Tree Linear Star Redundant ring Combinations of all the basic forms are possible. Visit our SIMATIC NET home page in the Internet www.siemens.de/automation/simatic-net There you will find information on products and solutions, the latest news on SIMATIC NET, as well as events and publications. All designations marked in this Product Brief with are registered trademarks of Siemens AG. Siemens AG Automation and Drives Postfach 4848, D-90327 Nürnberg Federal Republic of Germany www.siemens.com/automation Order No. 6ZB5 530-0AQ02-0BB1 Printed in the Federal Republic of Germany 26000/301232 WE 0103 5. Siemens AG 2002 Subject to change without prior notice.