Activity for leon-zhang

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo Eschwellinger, how to disable encryption and user/managememt? BR Leon

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo everyone, I'm trying to use a OPCUA-Client programmed as a Python File with the help of open source package opcua on a raspberry pi to communicate with the OPCUA-Server on the same Raspberry Pi installed with Codesys runtime. Python Code: from opcua import Client client = Client("opc.tcp://localhost:4840") client.set_user("xxxxxx") client.set_password("xxxxxx") client.connect() print("Client is connected to Server") also shown in the attachments. But I get the error message shown in the following...

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo eschwellinger, thank you very much for your help. Everything work fine now. BR Leon

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo h-hermsen, I have followed the instruction of the link you sent me. But when I Click View -> Security Screen, I can not find the Devices tab as shown in the attachment. BR Leon

  • leon-zhang leon-zhang modified a comment on discussion Engineering πŸ‡¬πŸ‡§

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo, I can only add one screenshot every time. Above I add the second screenshot as I described. Now I add the first screenshot as I described. BR leon-zhang

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo h-hermsen, thank you very much for yuor help. You mean that I should change the name into the ip(opc.tcp://192.168.1.108:4840). I have done in Server Settings as the first screenshot in the added attachment. Is that right? But I still can not connect UaExpert to OPCUA Server on Raspberry Pi and I get new error message as the second screenshot in the added attachment. Can you help me? This is very important for my work. Please... BR leon-zhang

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo h-hermsen, thank you very much for yuor help. You mean that I should change the name into the ip(opc.tcp://192.168.1.108:4840). I have done in Server Settings as the first screenshot in the added attachment. Is that right? But I still can not connect UaExpert to OPCUA Server on Raspberry Pi and I get new error message as the second screenshot in the added attachment. Can you help me? This is very important for my work. Please... BR leon-zhang

  • leon-zhang leon-zhang posted a comment on discussion Engineering πŸ‡¬πŸ‡§

    Hallo everyone, I'm trying to using UaExpert to connect to the OPC/UA Server on my Raspberry Pi, but I get an error message DiscoveryUrl of FindServers (opc.tcp://192.168.1.108) differs from the one received in GetEndpoints (opc.tcp://raspberrypi:4840) Could not connect to server: BadCommunicationError also showing in the following attachments. Does anyone know how to connect to the OPC/UA Server on my Raspberry Pi? Best Regards, Leon

1