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OPCFoundation / UA-Nodeset

UA Nodeset
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Problems when using DI model version 1.1 (specified in companion spec) with his UA model required version #31

Closed Nik654 closed 5 years ago

Nik654 commented 5 years ago

Description

In OPC Unified Architecture for Devices Companion Specification Release 1.01 specifies that model Schema can be found on link /https://opcfoundation.org/UA/schemas/DI/1.1/. Here we have DI model with publication date "2018-06-07T00:00:00Z" and it requires UA model version 1.03 with publication date "2013-12-02T00:00:00Z". When i try combine UA model with publication date "2013-12-02T00:00:00Z" (https://opcfoundation.org/UA/schemas/1.03/Opc.Ua.NodeSet2.xml) and DI model specified in companion specification (https://opcfoundation.org/UA/schemas/DI/1.1/) i get errors. This is because DI model is requesting some datatypes which are not available in UA model. E.g. line from https://opcfoundation.org/UA/schemas/DI/1.1/Opc.Ua.Di.NodeSet2.xml: UAVariable NodeId="ns=1;i=15031" BrowseName="DefaultRolePermissions" ParentNodeId="ns=1;i=15001" DataType="i=96" ValueRank="1" ArrayDimensions="0"

DataType="i=96" is looked for in UA model, but doesn't exist there and because of this i am having problems with these models.

Should maybe required version in DI Opc.Ua.Di.NodeSet2.xml file be UA version 1.04 or maybe i have misunderstood something?

randy-armstrong commented 5 years ago

Yes, the reference should be updated to point to 1.04. Older 1.03 compatible versions of the NodeSet can be found here: https://github.com/OPCFoundation/UA-Nodeset/blob/v1.03/DI/Opc.Ua.Di.NodeSet2.xml

Nik654 commented 5 years ago

One more question, when it says in .xml file, <RequiredModel ModelUri=... , does this mean:

  1. Minimal required model and than you can use same version but just newer model (by PublicationDate) or
  2. Only set required version must be used (no newer versions allowed)

You can than close this issue when fix is implemented if this is OK for you?

opcfoundation-org commented 5 years ago

The requirement is a minimum since the general policy is newer versions of the NodeSet are always backwards compatible unless there was a serious error that meant a feature was broken and unusable.

Nik654 commented 5 years ago

Thank you for the info.