The 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
a) in a synchronously-starting cyclic manner, according to a pre-established schedule, and
b) in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities.

Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle.

Cross References:
IEC 61158-4-16:2007
EN 61158-4-16:2008
ISO/IEC 7498-3
IEEE Std 802.3
ISO/IEC/IEEE 8802-3
RFC 879
ISO/IEC 7498-1
IEEE 802 .3
ISO 8601
EN 61158-6-19
EN 61158-3-19
IEC 61158-5-19
IEC 61784-2
EN 61784-2
IEC 61131
IEC 61800-7-20x1
IEC 61158-6-19
IEC 61131 (all parts)
IEC 61800-7
EN 61800-7
EN 61158-5-16
IEC 61158-3-19
EN 61158-1
IEC 61784-1
IEC 61158-5-16
EN 61158-6-16
EN 61784-1
IEC 61158-1
EN 61158-5-19
IEC 61158-6-16
EN 61131
IEC 61800-7 (all parts)


Replaces BS EN 61158-4-19:2014 which remains current

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