© Siemens AG 2017 Technical Fast on the Network Referenzarticle Unmanaged Industrial Ethernet Switches for the quick and easy Network Setup With the growth of Ethernet-based The globalization of the economy and Ethernet IEEE 802.3 (Institute of Electri- networks in industry, the need for the related technical progress lead to cal and Electronics Engineers). Since Industrial Ethernet switches as an the worldwide use of Ethernet as the the 1990s, this standard has established interface multiplier increases accor- standard for the communication. itself in automation and network tech- ding to a 2015 study by IHS Technolo- Requirements such as increasing the nology worldwide and been continu- gy – Industrial Ethernet Infrastructure efficiency and flexibility through simple ously developed further. While the Components. The principal market and cost-effective automation solutions original Ethernet interconnected sev- driver here is the necessity for greater are important factors in automation eral networks via a bus topology with efficiency in the production – thus technology, which must be taken into only one participant being able to send, improving the competitiveness. In this account during the product develop- the procedure employed today utilizes context, a rapid and cost-effective ment. Innovative products that quickly, CSMA/CD. Carrier sense multiple access commissioning of the devices is of easily and cost-effectively meet cus- with collision detection (CSMA/CD) crucial importance. With the unmana- tomer requirements despite the in- regulates the data transmission by the ged Industrial Ethernet switches, creased complexity of the plants and network participants and prevents a industrial communication networks in networks are now demanded more and data collision. Through the years, Ether- electrical and optical line and star more. Especially in the production and net has adapted to the changing re- structures are made possible using the process automation, the data of the quirements and covered new fields of plug & play principle. individual industrial communication application. networks must be exchanged in a clear and structured manner. Via local net- works (LAN – local area network), the data from the networks can be trans- mitted in packets using the standard siemens.com/scalance © Siemens AG 2017 Examples of this include Ethernet in industrial and automa- Cost-effective entry-level Solution with easy Handling tion environments, as the basis for building automation and, A switch is a component for the distribution of data. In last but not least, Ethernet with a higher data transmission doing so, the data packets are not sent to all ports, but only rate of 10 gigabits over copper cabling systems for a plant to the one to which the addressed terminal device is con- performance increase. Production and process applications nected. The communication takes place on the second layer can be implemented more efficiently and flexibly via Indus- of the OSI layer model (open system interconnection) and trial Ethernet and the use of standard IT applications. Com- only needs the MAC addresses (media access control) of the mercial IT is therefore the foundation for industrial applica- participants. In small or medium-sized machines, only a few tions. Siemens, the world market leader in automation Ethernet devices are normally used. In order to network technology, knows the above requirements of the globaliza- these few components in a closed network, unmanaged tion of companies with regard to the industrial network switches are typically utilized. For the data communication since 1985. Sinec H1 was the first Industrial Ethernet net- of this layer, no further functionalities and diagnostic capa- work. bilities are necessary. The unmanaged switches can be Today‘s products of the SCALANCE X family are ideal compo- integrated into an industrial network without a preliminary nents for industrial networks and optimized for the most configuration. The Ethernet components can be put into diverse applications. The portfolio is divided into managed operation more quickly and easily, and are thus more cost- and unmanaged switches. Managed Layer 2- and Layer effective than managed switches. 3-capable switches are characterized by their high levels of With the SCALANCE XB-000 product family, the components functionality and comprehensive diagnostic capabilities. This exactly fulfill these requirements. The small and compact allows larger networks with many participants to be set up form factor requires little space in the control cabinet and and monitored. Unmanaged switches are components that thus represents an economical variant for a network expan- do not provide options for the administration by means of sion. For the transmission at higher data rates and the standard tools, e.g., network management. They are, for connection of multiple devices, data transmission rates of up example, suitable for the machine-level networking of to 1000 Mbit/s and distances of up to 26 km can be realized plants. The small switches are employed for the simple and with fiber optic cables. Consequently, far-away machine and cost-effective connection of Industrial Ethernet components plant components can be easily and inexpensively net- in production halls on the field level. worked with each other and automated. Unmanaged switch- es are not only used for near-industrial applications but also for the building automation. In public buildings, such as schools, supermarkets, airports and underground garages, the building automation and control networks (BACnet) protocol has established itself as the communication stan- dard. As a company-neutral standard, Ethernet-based de- vices for the data communication can also be used with building automation components over BACnet/IP. The SCALANCE XB-000 product family features a supply voltage of 24 V AC (alternating current) customary in building auto- mation. 2 © Siemens AG 2017 Industrial Data Center SCALANCE XR526-8C SCALANCE Desigo CC SCALANCE XM416-4C Management XR324-4M EEC Station SCALANCE SCALANCE XB205-3 Desigo XC124 Room SCALANCE Automation XC106-2 Stations SCALANCE SIPLUS XB205-3 SCALANCE SIMATIC S7-1200 XB004-1 (Power AC 24 V) SIPLUS Desigo SIMATIC ET200SP Room Automation SIMATIC SIMATIC SCALANCE Stations MV440 MV420 XB205-3 SCALANCE XB004-1 (Power AC 24 V) Desigo Primary Conveyor belt Automation Stations G_IK10_XX_10400 Industrial Ethernet (Twisted Pair) Industrial Ethernet (Fiber Optic) The robust SCALANCE XC-100 unmanaged Industrial Ethernet switches with electrical and/or optical port variants enable a cost-optimized machine- level networking – even when subjected to extreme temperature fluctuations. Industrial-grade Ethernet Components Other required criteria include a redundant supply of power Besides the compact and small form factor, a robust network to ensure reliability, industrial-grade RJ45 retaining collars for extreme ambient conditions also is an important factor. and a signal contact for rapid diagnostics. The industrial- For instance, switches are used in the food production in suited SCALANCE XC-100 product family also possesses an refrigerated warehouses and freezers. For that, Ethernet approval for motor vehicles – so that it can be used for road components must be able to withstand temperatures below transportation. freezing. The switches must function not only in tempera- ture-critical environments but also in potentially explosive atmospheres, e.g., caused by gases, vapors or mists. Special regulations must be adhered to, which are governed by the ATEX (Atmospheres Explosibles) / IECEx approval. Especially suitable for these requirements are the SCALANCE XC-100 unmanaged Industrial Ethernet switches. 3 © Siemens AG 2017 Two in One – Power over Ethernet Conclusion and Outlook With the continued development of The steady technological progress and Ethernet, not only technical possibilities changed requirements in the industry arise. The use of Ethernet-based com- lead to an increase in the use of Ether- ponents can solve problems beyond the net-based components. Especially in traditional LAN application. With the the area of industrial and automation introduction of voice over IP (VoIP), technology, attention is paid to high- voice communication can now also run performance and cost-effective compo- over LAN – the corresponding terminal nents on the field level. Globalization devices, however, must be supplied results in an increase of global competi- with operating voltage. But also wire- tion among producing companies for less access points – typically installed in products with high quality. The associ- hard to reach places, or web cameras ated increase of data in the production – installed in a production hall or train must be reliably documented accord- station, must be supplied with voltage. ingly and transmitted more quickly. Not For the cost-effective supply of power only high data transmission rates but to terminal devices on the LAN, the also Power over Ethernet will play Ethernet standard was extended by important roles in the future – in order IEEE 802.3af for the remote supply of to realize cost-effective solutions. power. Employing the switches, the With its many years of experience in supply of power can be realized with up the field of automation technology, to 48 V and 12.95 W. PoE supports Siemens offers a wide range of network 10Base-T, 100Base-T and also components that feature Gigabit and 1000 Base-T Gigabit Ethernet. The Power over Ethernet. SCALANCE X108PoE unmanaged