Rif.: OPC UA connection to Festo CoDeSys PLC does not work

[christian1988H]

Hello Community,

Following problem:

I try to establish a connection via LabView (client side) to a Festo CoDeSys PLC (3.5 SP10).

When I try to connect there's always error code: "-356619" - 

It is possible to access the server via UA Expert:

The .vi:

Has anyone similar issues with CoDeSys PLC's or a solution for this problem?

Regards,

Christian Hartung

[m.chiesa]

Hi,

I have  the same issue with LV2017 + LabVIEW OPC UA Toolkit!

Mauro

[m.chiesa]

Try to:

connect - read one tag - disconnect

Mauro

[Jacobson-ni]

I would suggest showing the code you have created for what you have tried but my first suggestion would be to make sure you have exchanged and trusted the server and client certificates which was not done in the original post.

[christian1988H]

Hello,

it should also work without an certificate. The certificate and encryption is just an option.

I have still the same problem.. Error: "-356619"

Best regards

Christian

[VijayAundhekar1]

I am not sure if you have seen this post.

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000kIlbSAE&l=en-US

I hope this helps,

Vijay

[BorisApplexia]

Hello,

Have you been able to solve this issue in Labview 2017? I have the same problem with another PLC.

Thanks.

[VijayAundhekar1]

This behavior is due to a known issue using the OPC UA toolkit to communicate with a third-party server, to solve this issue please update the OPC UA Toolkit to the 2018 version. For details refer this note

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z000000kIlbSAE&l=en-US

When I upgraded my version to 2018, all my issues resolved.

Thanks,

Vijay