IEC 61158-4-21 Ed. 3.0 en:2023

Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements

International Electrotechnical Commission, 03/01/2023

Publisher: IEC

File Format: PDF

$227.00$455.00


Published:01/03/2023

Pages:114

File Size:1 file , 2.3 MB

Note:This product is unavailable in Ukraine, Russia, Belarus

The DLL provides basic time-critical data communications between devices in an automated environment. Type 21 provides priority-based cyclic and acyclic data communication using an internal collision-free, full-duplex dual-port Ethernet switch technology. For wide application in various automation applications, Type 21 does not restrict the cyclic/acyclic scheduling policy in the DLL.

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