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Thank you for your generosity in providing these tools. I tried it, but it seems not to work.
I found annother two opensource C# project: A(https://github.com/hylasoft-usa/h-opc) and B(https://github.com/titanium-as/TitaniumAS.Opc.Client). A reports the same error message as Rapid Scada, but B connected OPC DA server successfully. When I Debug A use Visual Studio(build setting is setAny CPU), the error message is below:
引发的异常:“System.Runtime.InteropServices.ExternalException”(位于 OpcNetApi.dll 中)
It means exception throw in OpcNetApi.dll. Maybe OpcNetApi.dll not implement the requirement interface(IOPCServerList2, I found project B implement and it doesn’t use OpcNetApi.dll)? Because I am not the paid member of OPC Foundation, I can not get the source code of OPC DA sample so that I can not figure out the issue’s reason. Finally, I use a simle and clear Go project: https://github.com/konimarti/opc as my solution for opc da server connection.I find a answer(http://stackoverflow.com/a/23749798/1834329) for the same error message. It seems like the latest OPC Core Components version not compatible, but I Can not find the available old version in OPC website.
Yes, I did. I can connect another OPC DA server normally, if I don’t have OPC Core Components installd, then I shouldn’t be able to connect.
i find a bug in comment.
when i submit two-, is shows one-.
so, the 1st link changed.
1st iamge linkThe 1st image link:
https://drive.google.com/file/d/1XyNelD–ZRIsJ9nyR-mUIqwUmETEkc7W/view?usp=drive_link
Throws the same error as Rapid Scada.https://drive.google.com/file/d/1XyNelD–ZRIsJ9nyR-mUIqwUmETEkc7W/view?usp=drive_link connect by BrowseOpcClassic
https://drive.google.com/file/d/1FX_cQsG2SR_7QJCkDXWpfZSsAvTsXY8X/view?usp=drive_link connect by another opc client
https://drive.google.com/file/d/13wVautZFCer_Xgt48CIXgXklEcU7QgKw/view?usp=drive_link connect and get info
Is that some wrong with complie environment?
Thank you for your reply! I tried to connect OPC DA server using BrowseOpcClassic but got the same error. When i use another OPC DA client to connect, everything is fine.
btw: how to upload local pictures to comments?
