BAS EN 61158-2:2012
Industrijske komunikacione mreže – Specifikacije fieldbus-a – Dio 2: Specifikacija fizičkog sloja i definicija usluga
Опште информације
Статус: Повучен
Број страна: 410
Језик: Енглески
Издање: 2.
Метода усвајања: Proglašavanje
Датум објаве: 28.11.2012
Технички комитет:
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Апстракт
IEC 61158-2:2010 specifies the requirements for fieldbus component parts. It also specifies the media and network configuration requirements necessary to ensure agreed levels of:<br />
a) data integrity before data-link layer error checking;<br />
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. This fifth edition cancels and replaces the fourth edition published in 2007 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:<br />
- for Type 18, Table 157 reduced tolerance to 5 %;<br />
- for Type 18, in 32.5.3.1 removed minimum cable length;<br />
- for Type 18, in 32.5.4. and R.2.2 cable reference removed;<br />
- for Type 18, Table 160 and 161 terminating resistor value changed to 680 Ω. This bilingual version published in 2011-12, corresponds to the English version published in 2010-07.
Животни циклус
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Изворни документ и степен усаглашености
- EN 61158-2:2010, идентичан
- IEC 61158-2:2010, идентичан