Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition
|Publication Date:||1 November 2014|
|ICS Code (IT applications in industry):||35.240.50|
|ICS Code (Industrial automation systems):||25.040|
|ICS Code (Open systems interconnection (OSI)):||35.100|
NEN-EN-IEC 61158-2 specifies the requirements for fieldbus component parts. It also specifies the media and network configuration requirements necessary to ensure agreed levels of a) data integrity before data-link layer error checking; b) interoperability between devices at the physical layer. The fieldbus physical layer conforms to layer 1 of the OSI 7-layer model as defined by ISO 7498 with the exception that, for some types, frame delimiters are in the physical layer while for other types they are in the data-link layer.