Connect ctrlX OPC UA Client with Siemens S7 OPC UA Server

[yannic]

Hello together,

how can I connect my ctrlX Core to my Siemens S7. In the S7 I release some variables from sensors (OPC UA Server). With them I want to work in the ctrlX. I created a OPC UA client on the ctrlX, but I get no connection to the IP address of the S7. It would be nice if someone can give me a step by step instruction for the connection between both devices. It could be also another third-party device (e.g. Beckhoff).

[DevME]

Hi,

the configuration of ctrlX OPC UA Client has changed in version 1.10. So first it is necessary to know your version of the app.

Best regards!

[yannic]

Hello, I use 1.10.

[yannic]

Hey,

Now the connection to the S7 works fine. But after a reboot of the core there is no automatic reconnection possible. Are there any settings to change for auto reconnect?

[CodeShepherd]

We checked with our R&D and at the moment there is no setting to trigger an auto reconnect to a server. This has to be done "by hand" e.g. with the PLC function blocks or via the Data Layer in the application that uses the client.

[CodeShepherd]

You could also use an init script that executes commands after reboot. See this topic for further information.

[maurusbien · Accepted solution]

Hello,

I just created a short NodeRED Flow example how a reconnect to an OPC UA Server from the OPC UA Client App can be performed (Flow as .json file attached). Please read the comments in the flow before using.

[ILS]

Hello yannic,

How did you connect to the Siemens Server via the opc ua client app on ctrlX core ?

Do you have some step by step documentation please ?

Thanks !

[yannic]

Hello ILS,

you have to choose the right encryption. My choice is SHA256. Is has to be the same on S7 and ctrlX. Does it work now?

Greetings

[ILS]

Hello Yannic,

Not for the moment...

How did you made the setup between the Siemens Server and the ctrlX Core client ?

Gr

[yannic]

Hello ILS,

Some possible solutions...

1. On the S7 put your Variables in a Data Block with the function "DPRD_DAT"

2. Share this Data Block with OPC UA

Hope it will work...

[MauroRiboniMX]

Thanks Maurus