BS-EN-IEC-61158-4-21 › Complete Document History
Industrial communication networks. Fieldbus specifications

Complete Current Edition:
   2023 EDITION - Industrial communication networks. Fieldbus specifications.Data-link layer protocol specification. Type 21 elements. - June 16, 2023

Obsolete Revision Information:
   2019 EDITION - Industrial communication networks. Fieldbus specifications. Data-link layer protocol specification. Type 21 elements - July 3, 2019