CSN EN IEC 62541-8 ed. 4

CSN EN IEC 62541-8 ed. 4 This part of IEC 62541 defines the PubSub communication model. It defines an OPC UA publish subscribe pattern which complements the client server pattern defined by the Services in IEC 62541-4. See IEC 62541-1 for an overview of the two models and their distinct uses.
Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.