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IDProjectCategoryView StatusDate SubmittedLast Update
000955810000-005: Information ModelSpecpublic2024-05-24 11:532024-06-10 17:38
ReporterMaximilian Assigned ToJeff Harding  
PrioritynormalSeverityfeatureReproducibilityhave not tried
Status assignedResolutionopen 
Product Version1.05.03 
Summary0009558: Clarification about receiving or sending data in Server suspendet state.
Description

We need some clarification about how "receiving or sending data" is meant to be.

Should the server shutdown its transport listeners, so no communication is possible at all? This includes Discovery services.
Current connections will be interrupted and Clients will run into timeouts. From Client side, it will look like the server is not available.

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Matthias Damm

2024-06-10 10:06

developer   ~0021273

SUSPENDED in enumeration ServerState is defined in Part 5 - this should be moved to Part 5.

I assume "receiving or sending data" is related to process data / events / method calls for business logic outside the OPC UA server management. Therefore I expect the server is still responding to OPC UA communication.

Matthias Damm

2024-06-10 10:47

developer   ~0021275

Last edited: 2024-06-10 10:48

The only related thing in Part 4 is the definition of 'Table 109 – ServiceLevel ranges'.

We have a 'Maintenance' range there - is this like SUSPENDED?
Maybe we can refer to SUSPENDED state there?
In 'Maintenance' the server is reachable but clients should disconnect.

We refer to COMMUNICATION_FAULT state in range 'NoData'

Jim Luth

2024-06-10 17:38

administrator   ~0021284

Last edited: 2024-06-10 17:38

Discussed in Virtual F2F. The first note about the OPC Client/Server communication continuing when the Server is in SUSPENDED state is correct. Moving the issue to Part 5 to better describe the correlation between the ServerState and the ServiceLevel.

Issue History

Date Modified Username Field Change
2024-05-24 11:53 Maximilian New Issue
2024-06-10 10:06 Matthias Damm Note Added: 0021273
2024-06-10 10:47 Matthias Damm Note Added: 0021275
2024-06-10 10:48 Matthias Damm Note Edited: 0021275
2024-06-10 17:32 Jim Luth Project 10000-004: Services => 10000-005: Information Model
2024-06-10 17:38 Jim Luth Note Added: 0021284
2024-06-10 17:38 Jim Luth Note Edited: 0021284
2024-06-10 17:38 Jim Luth Assigned To => Jeff Harding
2024-06-10 17:38 Jim Luth Status new => assigned