IEC-61158-6-20 Complete Document History
Industrial communication networks - Fieldbus specifications - Part 6-20: Application layer protocol specification - Type 20 elements

Complete Current Edition:
   EDITION 3.0 - Part 6-20: Application layer protocol specification - Type 2 - Aug. 19, 2014

Obsolete Revision Information:
   EDITION 2.0 - Part 6-20: Application layer protocol specification - Type 2 - Aug. 6, 2010
   EDITION 1.0 - Part 6-20: Application layer protocol specification - Type 2 - Dec. 1, 2007