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| Device Description Language ： ウィキペディア英語版 |
Device Description Language
Device Description Language (DDL) is the formal language describing the service and configuration of field devices for process and factory automation.
== Background ==
Current field devices for process and factory automation have a number of configuration options, to customize them to their individual use case. For these means they are equipped with a digital communication interface (HART, PROFIBUS, Fieldbus Foundation). Different software tools provide the means to control and configure the devices. In the 1990s, the DDL was developed to remove the requirement to write a new software tool for each new device type. Software can, through the interpretation of a device description (DD), configure and control many different devices. The creation of a description with the DDL is less effort than writing an entire software tool.
The HART Communication Foundation, PROFIBUS and Fieldbus Foundation have merged their individual dialects of the DDL. The result became the ''Electronic Device Description Language (EDDL)'', an IEC standard (IEC 61804).
The harmonization and enhancement of the EDDL is being undertaken in the EDDL Cooperation Team (ECT). The ECT consists of the leadership of the Fieldbus Foundation, Profibus Nutzerorganisation (PNO), Hart Communication Foundation, OPC Foundation and the FDT Group.
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