Driver

When upgrading WinCC OA version 3.8 or below to version 3.19, all Modbus connections (from projects of version 3.8 or below) are deactivated automatically. They must be manually activated again after upgrading the project.

The OPC DA/HDA and UA server now support multiple CNS Views. This requires a change of the default behavior for showing the CNS-View name in the OPC address space. In previous versions the server was not showing the view name per default, but this might now lead to conflicts if more than one view is configured.

So for projects, which are upgraded to 3.17 and higher and must not show CNS-View names in OPC address space, the config entry cnShowViewInPI = 0 in the corresponding config file section of the server is now required.