Ревидиран
Specifies a method of exchanging time-critical control centre data through wide- and local-area networks using a full ISO compliant protocol stack.
ПОВУЧЕН
IEC 60870-6-503:1997 ED1
99.60
Повлачење ступило на снагу
5. 4. 2002.
ПОВУЧЕН
IEC 60870-6-503:2002 ED2