IEC 61158-2:2003

Fieldbus is a digital serial, multidrop, data bus for communication with low-level industrial control and instrumentation devices such as transducers, actuators and local controllers. The Physical Layer provides for transparent transmission of Data Link Layer entities across physical connections. Specifies the requirements for Fieldbus component parts. Also specifies the media and network configuration requirements necessary to ensure agreed levels of: a) data integrity before Data Link error checking; b) interoperability between devices at the Physical Layer.

IEC 61158-2:2007 specifies the requirements for fieldbus component parts. It also specifies the media and network configuration requirements necessary to ensure agreed levels of data integrity before data-link Layer error checking; interoperability between devices at the physical layer. This fourth edition cancels and replaces IEC 61158-2:2003. This edition of this part constitutes a minor revision. This publication, together with its companion parts for Type 16, also partially replaces IEC 61491:2002 which is at present being revised. IEC 61491 will be issued as a technical report. This edition includes the following significant technical changes with respect to the previous edition: - deletion of the former Type 6 fieldbus for lack of market relevance; - addition of new fieldbus types; - generalization of the seldom-used Type 1 radio to a more useful form. This bilingual version (2014-04) corresponds to the monolingual English version, published in 2007-12.