# OPC-UA Error when OPC server is offline
**URL:** https://discourse.nodered.org/t/opc-ua-error-when-opc-server-is-offline/12949
**Category:** General
**Created:** [5 July 2019 10:21 UTC](https://discourse.nodered.org/t/opc-ua-error-when-opc-server-is-offline/12949 "2019-07-05T10:21:29Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@wasifh](https://discourse.nodered.org/u/wasifh)
#### Post date: [5 July 2019 10:21 UTC](https://discourse.nodered.org/t/opc-ua-error-when-opc-server-is-offline/12949/1 "2019-07-05T10:21:29Z")
I am having issue with OPC-UA which read hte OPC server connected to PLC. When OPC server is off. The Node-red flow crashes after some time. Is there any wayt o stop in crashing and closing down hte node-red. Seems like it has setting to go for certain number of tries to make a connection. Any idea
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### Author:  [@ukmoose](https://discourse.nodered.org/u/ukmoose)
#### Post date: [5 July 2019 10:34 UTC](https://discourse.nodered.org/t/opc-ua-error-when-opc-server-is-offline/12949/2 "2019-07-05T10:34:56Z")
The node should catch exceptions and behave nicely.
You need to open an issue on the github page for the node ( follow a link from the nodes page on [flows.nodered.org](http://flows.nodered.org)) to flag the issue to the nodes author.
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### Author:  [@afelix](https://discourse.nodered.org/u/afelix)
#### Post date: [5 July 2019 10:43 UTC](https://discourse.nodered.org/t/opc-ua-error-when-opc-server-is-offline/12949/3 "2019-07-05T10:43:03Z")
Looks to be a somewhat known issue: [https://github.com/mikakaraila/node-red-contrib-opcua/issues/89#issuecomment-488303522](https://github.com/mikakaraila/node-red-contrib-opcua/issues/89#issuecomment-488303522)
However, based on those issues on github the node in itself could do with more configuration rather than having to update hardcoded values in the node’s source file 🤷♀️
Probably wouldn’t be bad if you post there though to mention you’re seeing the exact same thing.