BS_IE_Switching_062010_EN.book Seite 1 Mittwoch, 23. Juni 2010 4:19 16 © Siemens AG 2010 Industrial Ethernet Switching Brochure · June 2010 SIMATIC NET Answers for industry. BR_Switching_EN_062010.fm Seite 2 Montag, 28. Juni 2010 3:40 15 © Siemens AG 2010 Industrial Ethernet Industrial Ethernet Networking With Totally Integrated Automation, Siemens is the only They are used for the structured networking of machines and manufacturer to offer an integrated range of products and plants as well as for integrating them into the overall corpo- systems for automation in all sectors – from incoming goods rate network. A graded portfolio of switches (SCALANCE X) and the production process to outgoing goods, from the field and communications processors with integral switches level through the production control level, to connection with enables optimum solutions for all types of switching tasks, the corporate management level. SIMATIC NET offers all the not only in harsh industrial environments. components for industrial communication: from industrial communications processors right up to network components To assist in selecting the right Industrial Ethernet switches as – even wireless if required. well as configuration of modular variants, the Switch Selec- tion Tool is available as a free download at: The ever expanding spread of Ethernet in the industrial envi- ronment makes it increasingly important to structure the www.siemens.de/switchselection resulting Industrial Ethernet/PROFINET networks. To achieve maximum uniformity of the networks and seam- less integration of the industrial plants, SIMATIC NET offers different Industrial Ethernet switching components − active network components for use direct at the SIMATIC sys- tem, as stand-alone devices or as plug-in communications processors with integral switch for PCs and SIMATIC. PROFINET/ SIMATIC NET − Industrial Industrial Wireless Industrial Communication from Siemens Ethernet Communication Industrial communication is of central importance for high-performance automation applications. Their AS-Interface diversity is mirrored in the broad range of industrial communication solutions from SIMATIC NET that SIMATIC NET extends beyond PROFINET/Industrial Ethernet: with Industrial Wireless Communication, Telecontrol, Telecontrol PROFIBUS, AS-Interface and IO-Link, it covers all areas of industrial communication. The optimum PROFIBUS solution is guaranteed for every application and every sector. IO-Link G_IK10_XX_10290 2 Industrial Ethernet BR_Switching_EN_062010.fm Seite 3 Montag, 28. Juni 2010 3:40 15 © Siemens AG 2010 Communication in industrial environments Industrial communication differs fundamentally from the com- These requirements can only be satisfied when it is based on an munication that is used in the office environment. In the office open, company-wide communication system that permeates environment, many clients communicate with one server; there the entire company and extends beyond its boundaries. Island are no cross-connections between clients. This type of data solutions are avoided in automation and information techno- transmission can cause bottlenecks and delays when commu- logy, so the following preconditions must apply: nication links are being established, when too many clients access a server simultaneously. ■ Continuous flow of information from the actuator/ sensor level through to the corporate management level This cannot be used for automation because cyclically executing process programs require up-to-date input data in order to issue ■ Availability of information at every location the appropriate control commands to components. ■ Fast exchange of data between the plant sections Furthermore, applications, communications relationships and network structures must be individually adapted to the harsh ■ Easy, plant-wide configuring and efficient diagnostics industrial conditions. ■ Integrated security functions that block unauthorized An industrial network must also be able to respond flexibly access and at short notice to changing market requirements and retooling must be fast and efficient. It must always be ensured, Totally Integrated Automation however, that the capacity of the network and therefore the plant or machines is optimally utilized and any downtimes The network and automation components of minimized. All the production and management processes SIMATIC NET are part of Totally Integrated Automation (TIA), an must perfectly interact. integrated range of products and systems for automation in all areas – from incoming goods, through the production process to outgoing goods, and from the field level, through to the connection to the corporate management level. These com- ponents feature the highest possible degree of integration be- cause they access a common database which, in turn, saves data entry costs and ensures consistency throughout the proj- ect. Availability and performance The demand for high network availability for powerful net- works in the various automation applications is rising contin- uously. Different topologies such as line, ring or star offer wide-ranging possibilities, e.g. when implementing a produc- tion line or manufacturing cell. Industrial Ethernet is a high-performance area and cell net- work designed to the IEEE 802.3 (Ethernet) standard that can be used to set up powerful communication networks extend- ing over long distances. PROFINET, the open Industrial Ether- net Standard, uses Industrial Ethernet and facilitates real-time communication right down to the field level. If existing IT stan- dards are fully utilized, PROFINET even permits isochronous mo- tion control applications to be implemented via Industrial Ethernet. Industrial Ethernet 3 BR_Switching_EN_062010.fm Seite 4 Montag, 28. Juni 2010 3:40 15 © Siemens AG 2010 Industrial Ethernet Network performance and technologies 'DWDWKURXJKSXW 0ELWVIXOOGXSOH[ 0ELWV 0ELWVVZLWFKHG 0ELWV 0ELWVIXOOGXSOH[ 0ELWV 0ELWVVZLWFKHG 0ELWV 0ELWVVKDUHG 0ELWV 0ELWVIXOOGXSOH[ 0ELWV 0ELWVVZLWFKHG 0ELWV 0ELWVVKDUHG 0ELWV (IIHFWLYHGDWDWKURXJKSXWGXHWRFROOLVLRQV *B,.B;;B Throughput of the networks (values for 5 network nodes) Ethernet becomes Industrial Ethernet by adapting all the com- • Switching permits parallel communication: ponents to provide the level of ruggedness and ease of use When a network is subdivided into several segments using required in industrial applications. This is based fully on the a switch, this results in load separation. Data communica- Ethernet standard IEEE 802.3 that includes the following basic tion is possible in each individual segment independently technologies: of the other segments. In the overall network, several message frames can therefore be en-route simultaneously. • Fast Ethernet at 100 Mbit/s: The performance gain is due to the simultaneity of several Message frames are transported much faster than by message frames. Ethernet (10 Mbit/s) and therefore only occupy the bus for • Autocrossover automatically crosses the send and receive an extremely short time. For Fast Ethernet, a 4-wire cables on twisted-pair interfaces. FastConnect cabling system (Cat5e) is available with cable, • Autosensing describes the characteristic of network plug and outlet. nodes (data terminals and network components) that • Gigabit Ethernet at 1 Gbit/s: automatically detect the transmission rate of a signal Gigabit Ethernet is faster than Fast Ethernet by a factor of (10 Mbit/s, 100 Mbit/s, or 1 Gbit/s) and support autone- 10, so the bus is occupied for only one tenth of the time. gotiation. For Gigabit Ethernet, an 8-wire FastConnect cabling system • Autonegotiation is a configuration protocol. (Cat6) is available with cable, plug and outlet. Before initiating the actual data transmission, network • Full Duplex avoids collisions: devices automatically negotiate a transmission mode that data throughput is increased hugely since the usual message all devices can use (10/100/1000 Mbit/s, full duplex or half frame repetitions are avoided. Data can be sent and re- duplex). ceived simultaneously between two nodes. The data throughput for a full duplex connection therefore rises to 200 Mbit/s with Fast Ethernet and to 2 Gbit/s with Gigabit Ethernet. 4 Industrial Ethernet BR_Switching_EN_062010.fm Seite 5 Montag, 28. Juni 2010 3:40 15 © Siemens AG 2010 Advantages of the switching technology Industrial Ethernet Switches are active network components Switched LAN that support the different network topologies: Networks can be constructed with switches in electrical or Electrical or optical cabling systems are used as the transmis- optical line, star and ring topologies. These active network sion medium between the switches. Data terminals are con- components specifically distribute data to the relevant nected electrically over twisted-pair cables. addressees. The switching technology permits parallel communication, SIMATIC NET offers the right Industrial Ethernet switch or a i.e. a network is divided into several segments, thereby result- component with switch functionality for every application: ing in load separation. Data communication is therefore possible in each individual segment independently of the • Compact Switch Modules (CSMs) offer additional ports other segments. This means that, throughout the network, directly on the SIMATIC multiple message frames can be in transit at the same time. • Unmanaged and managed switches of the SCALANCE The performance gain is due to the simultaneity of several X product group, perfectly tuned to the respective automa- message frames.