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IEC 61158-2 Ed. 5.0 en:2010
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IEC 61158-2 Ed. 5.0 en:2010 Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition
standard by International Electrotechnical Commission, 07/22/2010
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Full Description
IEC 61158-2:2010(E) 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 fifth edition cancels and replaces the fourth edition published in 2007. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition:
- for Type 18, Table 157 reduced tolerance to 5%;
- for Type 18, in 32.5.3.1 removed minimum cable length;
- for Type 18, in 32.5.4. and R.2.2 cable reference removed;
- for Type 18, Table 160 and 161 terminating resistor value changed to 680 Ohm.