BatiBus was a network protocol for building automation that was introduced in 1989 and has since been succeeded by KNX . It was a relatively simple low-cost protocol that did not rely on dedicated chips .
6-873: The system was run by the BatiBus Club International (BCI), which was founded by the Swiss company Landis & Gyr and the French companies AIRELEC, Electricité de France and Merlin Gerin (who originated the concept). Predominately used in France and captured by French Electrical Standard NF C 46620 , it provided layers 1, 2 and 7 of the OSI model . Approximately 500,000 BatiBus network units were installed, mainly in France. BatiBus communicated over twisted pair lines and in topologies that could be divided into several segments. Each segment
12-524: A global technology group. From the 1930s, the company diversified with telemetry and remote control products. After leadership struggles in the 1950s, a new management reorganized the financing and accounting and converted Landis & Gyr into a holding company . The range was expanded to include service machines, air conditioning and ventilation products. Landis & Gyr increased its personnel, with 14,000 employees around 1970 (5,200 of them in Zug). From
18-658: Is a stub . You can help Misplaced Pages by expanding it . Landis%2BGyr Landis+Gyr AG is a publicly listed, multinational corporation operating in over 30 countries and headquartered in Cham, Switzerland . Landis+Gyr makes meters and related software for electricity and gas utilities. Landis+Gyr was founded in 1896 as Theiler & Co. in Zug , in the canton of Zug , Switzerland , by technician Richard Theiler and entrepreneur Adelrich Gyr. It began by manufacturing electricity meters that were developed by Theiler. Heinrich Landis joined
24-539: The business in 1903, acquired it in 1904 and introduced Karl Heinrich Gyr as a partner in 1905, renaming it Landis & Gyr . The company benefited from the rise of the electronics industry and expanded abroad over the following years. By 1914, when it was made a joint-stock company , it was the largest employer in the canton of Zug, with over 800 employees. In the 1920s, Landis & Gyr opened offices in New York City and Australia and took over competitors to form
30-576: The mid-1970s and especially after 1984, the group was frequently restructured . In 1987, Landis & Gyr was acquired by Stephan Schmidheiny , who sold it to Elektrowatt in 1995. It is today a part of Siemens Building Technologies. The company was also known for producing optical phone cards until 2006. Landis+Gyr phone cards were used in many countries such as Israel , Belgium , Switzerland and more. Various utilities have worked with Landis+Gyr in meeting their consumers' demand for energy management tools by rolling out smart meters. Below are some of
36-410: Was powered with a 15 volt power supply rated at 150 milliamps. A device ( node ) could be reached at one of 240 possible addresses. In addition, 16 group addresses could be established under which all nodes in a group could be reached. The nodes avoided data collisions via CSMA/CA and had data flow controls . The maximum data transfer rate was 4800 bits/s . This computer networking article
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