"Error connecting to PLC: [object Object]"

[Aakash]

Hey Guys,

I am getting this error out of nowhere. "Error connecting to PLC: [object Object]". I am using a plc to send data forward through Http. Reading on previous topic didn't help me as no solution was posted there. I have only enabled the node in the exisiting flow.

[Colin]

What node is giving that error? Is it a contrib node?
Where is the error appearing?

[Aakash]

I cant find any node which is giving this error. In the following screenshot, none of the node names match with the one giving an error. And even if I disable the entire flow, this error is being displayed.

[dceejay]

If you use the search feature - ctrl/cmd F then look for the id of the node referenced -
It should show which node it is.

[Aakash]

This is what i got in response.

[dceejay]

Have you tried a full deploy ? do you have some old hidden configuration nodes ?

[Colin]

When you deploy watch for the message in the deploy popup saying you have unused config nodes.

[Aakash]

Yes i have. Same result. And i have some old nodes, but they are not related to PLC

[Colin]

If they are unused then delete them from the configuration nodes selection in the menu dropdown. Then uninstall any contrib nodes you have installed.

[Aakash]

Thanks it got solved. Restarted flows after deleting unused S7 nodes.