IEC 61158-4-4:2014 specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider and the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This second edition cancels and replaces the first edition published in 2007 and constitutes a technical revision. The main changes are: editorial improvements and editorial corrections.
WITHDRAWN
IEC 61158-4-4:2007 ED1
WITHDRAWN
IEC 61158-4-4:2014 ED2
99.60
Withdrawal effective
Apr 18, 2019
WITHDRAWN
IEC 61158-4-4:2019 ED3