View Issue Details
ID | Project | Category | View Status | Date Submitted | Last Update |
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0008076 | Part 81: UAFX Connecting Devices and Information Model | Spec | public | 2022-06-24 17:19 | 2022-07-27 18:33 |
Reporter | Greg Majcher | Assigned To | Georg Biehler | ||
Priority | normal | Severity | minor | Reproducibility | have not tried |
Status | closed | Resolution | fixed | ||
Fixed in Version | 1.00.00 Release | ||||
Summary | 0008076: Add text to clarify persistence behavior | ||||
Description | UAFX has a mandatory IsPersistent flag in the ConnectionEndpoint specifying whether the UAFX connection should survive a power cycle. There are multiple issues with persistence that need to be clarified in the specification. Clause 5.5.5 does indicate that dynamically created parts of the connection "are deleted" if the connection is not marked for persistence. Should this say "shall be deleted"? Clause 6.2.4.3.5 states for a preconfigured ConnectionEnpoints, "IsPersistent... shall be set according to Parameter". Does this make sense for a preconfigured connection. IsPersistent should probably be ignored for a preconfigured ConnectionEndpoint. Clause 6.2.4.3.9.2 discusses what to do when a SetCommunicationConfigurationCmd is issued. We discussed whether it is possible for the AC to "verify that ConnectionEndpoints with their IsPersistent Property set to TRUE reference a DataSetReader and/or DataSetWriter which are persisted, including all parent Objects, i.e., WriterGroup, ReaderGroup, PubSubConnection and PublishSubscribe (see NotPersisted in OPC 10000-14). We need to investigate if this is possible. | ||||
Tags | No tags attached. | ||||
related to | 0008156 | closed | Georg Biehler | 6.2.4.3.5 Command CreateConnectionEndpointCmd - need better linkage |
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reviewed in call, agreed that it should be reviewed and updated as needed (note section 5 is not normative - so might not need shall?) check section 4 & 5 for other persistance issue that might not have a shall check if default for pubSub vs FX either needs to be changed or explain better (we are not persistent by default, but PubSub is persistent by default) |
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A search for shall in clauses 4 and 5 indicated one appearance in clause 5.4 A search for may in clauses 4 and 5 many appearances Verified that clause 4 and 5 do not contain any behaviour which is not stated in other places. To clause 6.2.4.3.5 we have the text stated in 5.5.5: Clause 6.2.4.3.9.2 - according to Part14 clause 6.2.2 every PubSub component has configuration properties (e.g. dataSetWriterProperties, GroupProperties...). The properties are a list of KeyValuePairs. The component is not persisted, if the list contains an entry with key set to NotPersisted and value set to True. If no entry with the key exists or the value is set to False, the component is persisted. Lets discuss in the larger group whether to rename the IsPersistent to NotPersisted to match Part14, or leave it as is. Since IsPersistent is mandatory, there is no default behaviour defined (you have to choose a value). |
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during review of this issue we also updated this error code Bad_RequestNotAllowed The ConnectionEndpoint to be enabled references input Variables, which are used by another enabled ConnectionEndpoint. |
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also updated text in section 6.2.4.3.9.2. to better explain what is expect The EstablishConnections implementation shall verify that ConnectionEndpoints with their IsPersistent Property set to TRUE reference a DataSetReader and/or DataSetWriter which are persisted, including all parent Objects, i.e., WriterGroup, ReaderGroup, PubSubConnection and PublishSubscribe (see NotPersisted in OPC 10000-14). If the IsPersistent Property is set to FALSE, the EstablishConnections implementation shall verify that the DataSetReader and/or DataSetWriter are not persisted (see NotPersisted in OPC 10000-14). Otherwise, Bad_InvalidState shall be set in the appropriate element in ConnectionEndpointConfigurationResults CommunicationLinksResult, and the EstablishConnections implementation shall abort processing as described in 6.2.4.3.11. |
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review text in call, made changes and closed issue |
Date Modified | Username | Field | Change |
---|---|---|---|
2022-06-24 17:19 | Greg Majcher | New Issue | |
2022-07-15 13:11 | Paul Hunkar | Assigned To | => Georg Biehler |
2022-07-15 13:11 | Paul Hunkar | Status | new => assigned |
2022-07-15 13:15 | Paul Hunkar | Note Added: 0017138 | |
2022-07-15 13:17 | Paul Hunkar | Note Edited: 0017138 | |
2022-07-18 10:03 | Georg Biehler | Status | assigned => resolved |
2022-07-18 10:03 | Georg Biehler | Resolution | open => fixed |
2022-07-18 10:03 | Georg Biehler | Fixed in Version | => 1.00.00 Release |
2022-07-18 10:03 | Georg Biehler | Note Added: 0017146 | |
2022-07-22 12:53 | Paul Hunkar | Note Added: 0017175 | |
2022-07-22 13:29 | Paul Hunkar | Note Added: 0017176 | |
2022-07-22 13:34 | Paul Hunkar | Status | resolved => closed |
2022-07-22 13:34 | Paul Hunkar | Note Added: 0017177 | |
2022-07-27 18:33 | Georg Biehler | Relationship added | related to 0008156 |