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Automation Technologies 5/2014

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Automation Technologies 5/2014

Industrial Communication

Industrial Communication previous page 02 industrystandard splice boxes like FIMP enable machines to be decentralized connected to Profinet networks Professional Installation of the Optical Fibre 01 The Industrial Ethernet-Switch e-light 2MA meets the requirements of the Profinet conformity class B and supports the monitoring system “FiberView” For distances up to 5 km, multimode fibres offer an economically efficient alternative to single-mode fibres with which data communication across 100 km and more is possible. Cables already applied with plugs and delivered with dampening protocol are available, but recommended only for well-accessible cable routes and distances of a few hundred m. Profinet permits networks to be built in line, tree and star topologies, as well as redundant, highly available ring structures. To connect the automation units to the switches or media converters that convert electrical signals into optical ones and vice versa, industry-standard splice boxes offer a practical alternative. With them, the central handover point that is usually placed in 19“ control cabinets can be brought closer and thus locally to the machines. Furthermore, patch cables can be used, permitting different plugs. Condition Monitoring of the Optical Fibre Routes Ensures Safety For optical data communication, the switches and media converters provide a budget – the difference between transmission output and reception sensitivity - with which the dampening required depending on the type of optical fibre route can be bridged. However, this will often increase slowly over time, e.g. due to loose connection elements, dust and dirt, moisture or mechanical stress. Before now, this could only be found out with elaborate measurements such as optical reflectrometry. Modern network management systems can display the status of the active components, but not the condition of the optical fibre routes. “FiberView” is a monitoring system that has been developed specifically for this task and that can be used in Profinet networks as well. It consists of a hardware/software combination that is integrated into the switches and that monitors the budget of the respective optical fibre route continually per port. LEDs, and/or an additional user interface that can be accessed via the web-interface, display whether the budget is in the green, yellow or red area. At yellow, it is just barely in above the defined system reserve. This early warning level can be signalled via a potential-free contact or centrally assessed via the Profinet controller. Reliable and Versatile The functions available in the open Profinet standard are structured into conformity classes A, B and C, depending on the application scenario. Since the automation devices and – in classes B and C – also the network components must be certified, the required functions and the interoperability of products from different manufacturers is ensured. Optical fibre, which is an integrated part of the Profinet concept, as well as active and passive optical network component‘s, not only permits a highly reliable data transmission, but also a variety of applications beyond factory automation. www.eks-engel.com AUTOMATION TECHNOLOGIES 5/2014

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