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MS IEC 61158-2:2011
Industrial communication networks - Fieldbus specification - Part 2: Physical layer specifications and service definition (IEC 61158-2:2010, IDT)
This Malaysian Standard 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.
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