March 2005

Special Report: Instruments and Networks

Benefits of electronic device description language for fieldbus installations

The technology is a major advancement toward achieving interoperability of intelligent field instrumentation incorporating different fieldbus protocols

Zielinski, M., Emerson Process Management

Electronic device description language (EDDL) is a text-based language for describing the digital communication characteristics of intelligent field instrumentation and equipment parameters – device status, diagnostic data and configuration details – in an operating system (OS) and human-machine interface (HMI) neutral environment. Initially developed in 1992 for use as part of the HART communication protocol, EDDL-based technologies continue to evolve. EDDL is being enhanced to extend the concept of interoperability to the HMI and diagnostic data. When IEC 61804-2 Electronic Device Description Language was approved as an international standard in March 2004, the EDD

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