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ČSN EN IEC 61158-4-2-ed.4 (184020)
Industrial communication networks - Fieldbus specifications - Part 4-2: Data-link layer protocol specification - Type 2 elements
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STANDARD published on 1.12.2019
The information about the standard:
Designation standards: ČSN EN IEC 61158-4-2-ed.4
Classification mark: 184020
Catalog number: 508297
Publication date standards: 1.12.2019
SKU: NS-977010
The number of pages: 394
Approximate weight : 1213 g (2.67 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Industrial process measurement and controlData link layerNetworking
Annotation of standard text ČSN EN IEC 61158-4-2-ed.4 (184020):
data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities, seque-ntially and in a cyclic synchronous manner. Foreground scheduled access is available for time-critical activities together with background unscheduled access for less critical activities. Deterministic and synchronized transfers can be provided at cyclic intervals up to 1 ms and device separations of 25 km. This performance is adjustable dynamically and on-line by re-configuring the parameters of the local link whilst normal operation continues. By similar means, DL connections and new devices may be added or removed during normal ope-ration. This protocol provides means to maintain clock synchronization across an extended link with a precision better than 10 s. This protocol optimizes each access opportunity by concatenating multiple DLSDUs and associated DLPCI into a single DLPDU, thereby improving data transfer efficiency for data-link entities that actively source multiple streams of data. The maximum system size is an unlimited number of links of 99 nodes, each with 255 DLSAP-addresses. Each link has a maximum of 224 related peer and publisher DLCEPs
These changes apply to this standard:
ČSN EN IEC 61158-4-2-ed.4:2019/Z1 (184020)
Change
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Průmyslové komunikační sítě - Specifikace sběrnice pole - Část 4-2: Specifikace protokolu datového spoje - Prvky typu 2 (Norma k přímému použití jako ČSN).
Change published on 1.9.2023
Selected format: English - Print design (1.20 USD)
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Preview of the standard ČSN EN IEC 61158-4-2-ed.4 (184020)
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