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.NET Core on PLCnext Control 2152

aliteraalitera
edited December 2020 in PLCnext Technology & PLCnext Controls

Hi, I found this description below in the PLCnext community but I have some trouble to get this run.

If I insert the command 'dotnet --info' then it seems that my setup is not correct. Result 'command not found'

 

How to use the .Net Core on a PLCnext Control



If you're a C# programmer working with a PLCnext Control then you might want to use the Microsoft® .NET Core runtime. Here's how to install it on an AXC F 2152 control.


Set up the runtime on the PLC

  1. Download the Dotnetcore Runtime Binaries - Microsoft .NET Core download site - for the AXC F 2152 it is Linux ARM 32bit. Note: You may also use a newer version, e.g. 3.0
  2. Unzip the Runtime .zip file
  3. Unzip the Data folder
  4. Copy the unzipped files (host, shared and dotnet binary) to the controller at /opt/DotnetRT
  5. Create a symlink to the binary (as root user) ln -s /opt/DotnetRT/dotnet /usr/local/bin/dotnet
  6. Check if the link is setup correctly: lrwxrwxrwx 1 admin plcnext 20 Nov 27 12:50 dotnet -> /opt/DotnetRT/dotnet
  7. Check if installation was succesfull: dotnet --info

Do you have an idea, what I need to do?

Thanks.

Alex

Comments

  • Martin - PLCnext Technology TeamMartin - PLCnext Technology Team

    Hi Alex,

    Is there an executable named dotnet in the directory /opt/DotnetRT/ ?

    Does this have execute privileges?

    What happens when you run the command /opt/DotnetRT/dotnet --info ?

    Is there a symbolic link named dotnet in the directory /usr/local/bin/ ?

    Is this symbolic link pointing to the dotnet executable in the directory /opt/DotnetRT/ ?

    Hopefully one of these checks will reveal the problem.

    Regards,
    Martin.

  • aliteraalitera

    Hi Martin, I found a second example 

    https://www.plcnext-community.net/en/hn-makers-blog/424-install-the-net-core-runtime-3-0-0-on-the-axc-f-2152.html

    This works also not exactly as described. I had some challenges to expand the files and copy to the PLC folders.

    After some loops I got it running, 

    Putty:

    admin@axcf2152:~$ dotnet --info
    It was not possible to find any installed .NET Core SDKs
    Did you mean to run .NET Core SDK commands? Install a .NET Core SDK from:
    https://aka.ms/dotnet-download

    Host (useful for support):
    Version: 3.0.0
    Commit: 95a0a61858

    .NET Core SDKs installed:
    No SDKs were found.

    .NET Core runtimes installed:
    Microsoft.NETCore.App 3.0.0 [/opt/dotnet-runtime-3.0.0-linux-arm/shared/Microsoft.NETCore.App]

    To install additional .NET Core runtimes or SDKs:
    https://aka.ms/dotnet-download

     

    Now I will check, if I can work with TCPIP Socket (c#) on my PLCnext device ;)

    Thanks a lot.

    Alex

     

  • Oliver PLCnext TeamOliver PLCnext Team

    Hello Alex,
    the thing with Linux File Systems is that they are not supported by Windows so the moment you unzip it on a Windows OS lots of Linux file information go missing.

    like the permissions , Exectuion property or Symlinks.
    So after copying you need to restore those or unzip directly on the PLC.

    chmod +x File -> to make it executeabled.
    ln -s to restore symlinks... 

    You do not need the SDK on the PLC.
    It also takes way to long to compile on target.
    For running code the runtime is enough...

    So I recommend you downloading the sdk to your PC only and set in the project properties that you are building for Arm32 Bit.

     

    kind regards,
    Oliver Warneke

  • aliteraalitera

    My c# TCPClient is running on PLCnext controller, now.

    Thanks a lot and Merry Christmas.

     

    Alex

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