OPC Data Access 3.0
Compliance Tested OPC Foundation

KEPServerEX now fully supports OPC Data Access 3.0. The OPC DA 3.0 spec is an enhancement of the OPC DA 2.05a and OPC DA 2.05 specs. KEPServerEX was tested at the 2005 North American Interoperability Workshop in Tampa, FL and now has 100% compliance test success. 

Read the Kepware Press Release on DA 3.0 to find out how OPC DA 3.0 can benefit you. 

Learn more about KEPServerEX.
  •  Added new interfaces
          - IOPCBrowse
          - IOPCItemDeadbandMgt
          - IOPCItemSamplingMgt
          - IOPCItemIO
          - IOPCSyncIO2
          - IOPCAsyncIO3
          - IOPCGroupStateMgt2
  • Clarified startup issues and add WAITING_FOR_INITIAL_DATA quality status mask.
  • Added Item Property #7, #8 for EUTYPE
  • Clarify SetActiveState to indicate that an item transition from inactive to active will ultimately result in a quality change, triggering a callback.
  • Add new server status enumeration (OPC_STATUS_COMM_FAULT)
  • Heading labels added to methods for easier access via the Table of Contents
  • Removed Legacy Interfaces from this version of the specification
          - IOPCServerPublicGroups
          - IOPCBrowseServerAddressSpace
          - IOPCPublicGroupStateMgt
          - IOPCAsyncIO
          - IOPCItemProperties
  • In addition, spelling, grammar, formatting and minor clarifications were added to improve the quality of the specification
  • Added Item Properties section
  • Clarify RemoveGroup
  • Added CATIDs to idl
  • Provided the ability to read and write the quality and timestamp
  • KeepAlive mechanism was added to confirm the callback connection health

Taken from the OPC Foundation's OPC DA 3.0 Specification