Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 250 z 288

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The system can de- signed for maximum eight data lines, although two are always used send and receive lines. OBO also offers host pro- tective devices that are simple install, depending on the particular application. • RS232 interface The RS232 frequently used interface. used, for example, for modems and other peripherals. There range interfaces for different applica- tions: from bus lines for telecommunication and data transfer through simple terminal devices such as printers scanners. extends from the simple installation print- er connected complex networks with sever- al thousand clients. Interfaces External devices such printers, scanners and con- trol systems activated via serial parallel interfaces must additionally integrated into the surge protec- tion concept. Ethernet Ethernet the standard technology for networked computer systems today. Al- though now largely replaced the USB interface, the RS232 standard still frequently used for control lines. • V24 interface V24 the German designation for RS232. Specified data transmission rates range from Mbit/s much Gbit/s today, and the data can transmitted over both clas- sic copper cables and fibre optic cables.2 km with data rate Mbit/s (dependent upon seri- al controllers). The American nomenclature, however, the most widely used.5 Data technology Data technology used wide range applica- tions. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 250 Chapter The internal lightning protection system . The maximum length this bus sys- tem, when twisted-pair cables are used, approx. This enables cable lengths several hundred metres realised.3. 1. all cases, careful planning of surge protection measures required, taking account of the data interfaces hand.2. The Amer- ican nomenclature, however, the most widely used.3. • RS485 interface The RS485 industrial bus interface differs slightly from the RS422 that the RS485 enables the connection of several transmitters and receivers (up users) via protocol. • RS422 interface The RS422 serial high-speed standard suitable for communication between maximum ten users, which designed bus. The stand- ard includes cable and connector types such as RJ45. • V11 interface V11 the German designation for the RS422. • TTY system Unlike the RS232 other serial interfaces, the TTY system not voltage-controlled instead delivers an imposed current (4–20 mA)