OPC UA Client to Kepware OPC UA Server

CODESYS
1

Hi,
I have problem with connecting Wago PLC WAGO 750-8212/0025-0002 configured as OPC UA client to Kepware OPC UA Server. I am using Codesys 3.5.19.70.

What I did so far.
To the Codesys project I added object Data Source Manager and configured connection OPC UA like below:
pic 1

Then I can browse the OPC server tags in “Variables” tab after prior trust on the server side of the client certificate created in the “Communication” tab:
pic 2

Additionally second certificate has been created in Codesys for runtime process in “Security screen” as well as the server certificate was approved here:
pic 3

But when I compiled project, downloaded it to PLC and go to RUN I can’t read selected in “Variables” tab, OPC Server tags. I am getting such error (ID: 7001):
pic 4

All two PLC certificates has been trusted in OPC server (Kepware) side:
pic 5
and
Kepware server configuration look like this:
pic 6

I can easily connect using third party OPC UA client UaExpert to Kepware server without problem.

Verry sorry for adding references to pictures instead add them directly under each sections. I can’t include more than one image as a new user and without additional drawings the post would have a weak explanation may be incomprehensible. I hope this will be understood

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image1597×2895 171 KB

2

Hi Macman,

Do you possibly have bad certificates in the “Quarantined Certificates” section in Codesys? If so, delete them and try to reconnect.

Regards,

3

Hi Jacob,
Thank you for response. I checked and there is nothing in “Quarantined Certificates” folder and no unknown certs on server site too so suspect that all should be fine with certificates.

4

Another thing I notice is that one of your “Own Certificates” is expired…

Here is what my screen looks like:

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Have you tried or been successful connecting anonymously without using authentication? I recommend this as a first step before adding the OPCUA securities.