EN 62541-4:2015

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions and conventions
4 Overview
5 Service Sets
6 Service behaviours
7 Common parameter type definitions
Annex A (informative) - BNF definitions
Annex B (informative) - Content Filter and Query
        Examples
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 62541-4:2015 defines the OPC Unified Architecture (OPC UA) Services. The Services described are the collection of abstract Remote Procedure Calls (RPC) that are implemented by OPC UA Servers and called by OPC UA Clients. This second edition cancels and replaces the first edition published in 2011. It constitutes a technical revision. It includes the following changes:- Update for 6.4 Redundancy.- Clarifications for Publish and Reconnect scenarios.- Handling of MonitoredItem changes in short network interruption scenarios.- Update for 6.1.3 Determining if a Certificate is Trusted.- Revised definition of parameters semaphoreFile and isOnline in Service RegisterServer.- Services ModifySubscription and ModifyMonitoredItems.