Driver OPCUA

[rwazir]

We are using OPCUA Client in WinCC-OA version 3.14 patch 8


At the system management > Driver OPC > OPC UA Client, u can create and remove connections with a opcua server.

I have the following situation:
There was once a connection created with servername and subscription name and it was good & working through datapoints.
It seems if u remove this connection and subscription via the same panel (system management ) and delete the datapoints, that not all of this is removed or undone even if u restart the driver.
Creating a new connection and subscription with the same name, and add a address config at a dp-element from this connectionname , than following message appears in the logview:
WCCOAopcua (108), 2018.11.07 14:27:28.718, IMPL, SEVERE, 55/opcua, OpcUaCHWMapper in Function allowCreateSubscription, Can not create Subscription RSN_OPCUA_SUB_VAARWEGMARKERING @ Server RSN_OPCUA_VAARWEGMARKERING - Subscription is already in use at server RSN_OPCUA__VAARWEGMARKERING

How can this be undone? Because restarting the driver is not enough.

[adaneau]

Hi,

Did you remove also addresses pointing to this server / subscription?

BR
Alex

[rwazir]

Hi Alexandre,

I did remove the datapoints using the addresses.

[alug]

Hallo,

I think there is still a wrong address in the project with the server part RSN_OPCUA__VAARWEGMARKERING
(two __ instead of one)
You can find it either in an ASCII export of all addresses or you can use the internal DP _Driver to determine the DPE.

There is an element _Driver.AD.HWMask, where you can write an address pattern and you get the DPEs with matching
address on _Driver.AD.DPMatch.
The corresponding driver must run to do this !

E.g. write the pattern RSN_OPCUA__VAARWEGMARKERING* and look whats coming back on the DPMatch element.


best regards

Andreas

[rwazir]

Andreas thanx for the tip.
I'll try this.

[rwazir]

Hi Andreas,

There was indeed a wrong address in the project with bad servername.
Many thanx.