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.
IEC 61158-4-21 Ed. 3.0 b:2023
Original price was: $455.00.$227.00Current price is: $227.00.
Industrial communication networks – Fieldbus specifications – Part 4-21: Data-link layer protocol specification – Type 21 elements
International Electrotechnical Commission , 03/01/2023
Pages: 228
