Article - CS321553
Industrial Thing shows Unknown Quality on Remotely Bound Properties after some time but remains connected between ThingWorx Platform and KEPServerEX/ThingWorx Kepware Server
Modified: 09-Apr-2024
Applies To
- ThingWorx Platform 8.1 to 9.5
- Kepware Server (formerly KEPServerEX) 6.3.279.0 to 6.15
- ThingWorx Kepware Server (legacy) 8.1 to 6.15
Description
- Multiple PLCs are connected from single KEPServerEX/ThingWorx Kepware Server to ThingWorx Platform and only one or a few show Unknown or Bad Quality on Remotely Bound Properties
- Remotely Bound Properties for an Industrial Thing shows Unknown Quality for Tags but isConnected property remains true
- Tags continue to stream from Device/PLC into KEPServerEX/ThingWorx Kepware Server correctly but show Unknown Quality in ThingWorx Platform
- Fetching data from kepware into ThingWorx but tags are showing as quality unknown and then while saving the edge thing it becomes quality good
- Memory usage is high on ThingWorx Platform instance and some Industrial Things connected with KEPServerEX/ThingWorx Kepware Server show Unknown Quality for Remotely Bound Properties
- ThingworxStorage\logs\ApplicationLog.log shows:
[L: ERROR] [O: c.t.w.p.APIProcessor] [I: ] [U: Administrator] [S: ] [P: ] [T: WSExecutionProcessor-511] Unable to dispatch [ uri = /Things/Wrapper43/Services/GetPropertySubscriptions/]: Unable to Invoke Service GetPropertySubscriptions on <Industrial Thing> : null
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