Concerning the created Open Metering System Specification (OMS specification or OMSS) a subset out of the existing Meter-Bus standard series (EN 13757) was selected, definitions were made where selections or ambiguities were possible, to streamline the interpretation by different producers.
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The Open Metering System OMS stands for a manufacturer and utilities independent standardization for Meter-Bus based communication between utility meters (electricity, gas, water, district heat, heat cost allocators) and systems in the field of Smart meter.
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On the side of meter manufacturers there were mainly the members of the technical associations in Germany FIGAWA (German Association for Gas and Water) and ZVEI (German Electrical and Electronics Industry Association), but also several other internationally operating companies joined to create a bundle of common definitions and specifications based on the European Meter-Bus standard (EN 13757) as well as the Dutch NTA 8130.
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