Full Description

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.

Cross References:
ISO/IEC/IEEE 8802-3:2017
EN IEC 61158-3-21:2019
IEC 61158-3-21:2019
ISO/IEC/IEEE 8802-3:2017/Amd 3:2017
BS EN IEC 61158-3-21:2019
ISO/IEC 7498-1
ISO/IEC 10731
ISO/IEC 7498-3
IETF RFC 768
ISO/IEC TR 8802?1
IEC 61588
IETF RFC 791
IEC 61158-6-21:2019
IETF RFC 793
IEC 61158-1:2019
IEC 61918:2018
IEC 61784-2:2019
IEC 61158-5-21:2019
IEC 61158-2:2014
BS EN IEC 61158-5-21:2019


Replaces BS EN 61158-4-21:2012 which remains current

All current amendments available at time of purchase are included with the purchase of this document.

Product Details

Published: 07/03/2019 ISBN(s): 9780539048377 Number of Pages: 114 File Size: 1 file , 2 MB Product Code(s): 30395520, 30395520, 30395520 Note: This product is unavailable in United Kingdom