Plamen Kiradjiev

Hi, I found the solution: Information about the matter: https://www.saeautom.sk/download/dcom_config.pdf https://www.kepware.com/getattachment/04042e47-c690-467c-a931-a1ca126575db/Remote-OPC-DA-Quick-Start-Guide-(DCOM).pdf https://www.aggsoft.com/asdl-dcom-opc-config-4.htm Descriptions differ (paths, users, etc.). The principle, however: DCOM Config on the server - this is necessary for a client-server communication, if they are not collocated. Firewall setup on the server (you can do the test first...

Hi all, I have a similar problem, but with an remote OPC DA server, which is accessed via dcom: - server: SchneiderElectric, 64bit - client: win7, 32bit, Pathon 2.7, OpenOPC for Python 1.3.1 CLI is working, so I can do list item via opc -l with DCOM host name and server. OpenOPC.client('\SERVER') return OpenOPC.OPCError: Dispatch: invalid class string Thanks for your advice. Plamen