There is an error message in the logbook:
Main diagnostic code: 080F0829
Detailed diagnostic code: 0C64100E
Description 1: App connection failed
Description 2: App connection not allowed for apps from unknown sources
Description 3: Connection of plug <myappname>:home is not allowed
Source 3: web.packagemanager / snap.rexroth-deviceadmin.web.service

In the app settings, apps from unknown sources are allowed. Otherwise, I couldn't even have installed the app.

Description 3 of the error message says that plug "home" is not allowed, which is needed for file access. But file access is working.

UDP communication is also working. But the data layer access is not working.

Any idea what the issue could be?

I want to create same snap like OPC UA, "create token app" which will get installed and In the menubar When clicked "Create token app" opens the gui in the right side where it will take two inputs username and password and save button when clicked in the backend it will call restapi to create token

I want to develop in python

Which will have UI for configuration & On the backend it will read the parameter from that UI and call the rest api to create backup.

Can I create that snap in c++ does it support UI creation ??

One more thing how can we call the rest api using c++ ?using libcurl

I want to create a variable in datalayer using restapi in python snap.

Variable will be int type and I want to read and write that also.

Could you please help me

I am calling the api like below

url = "https://" + self.ctrlx_ip_address + "/automation/api/v2/nodes/datalayer/test/value"

        payload = {
            "value": "ok",
            "type": "types/string"
        }

But I am getting response

Error: 400 {"type": "about:blank","title": "DL_TYPE_MISMATCH","status": 400,"detail": "Invalid type field","instance": "datalayer/test/value","severity": "Error"}

i installed the datalayer nuget in visual studio vb.net 2019, but when i run the code i get the error : Exception thrown: 'System.DllNotFoundException' in datalayer.dll

An unhandled exception of type 'System.DllNotFoundException' occurred in datalayer.dll

Unable to load DLL 'comm_datalayer.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

over the christmas break I have been implementing a PLC4X compatible driver for CtrlX. So far it supports Browsing, Reading and Writing (Subscriptions will follow soon).

However I noticed a few things, that I think either I'm using it wrongly or that could use improvement.

In order to test my drivers in various protocols, I developed a standard set of variables, UDTs and values I statically assign to them to test my drivers (Attached that as DATA.txt). Then I have a test setup, where I read each tag, compare it to the expected value and then I write the same value back individually. As soon as they pass, I then read all tags at once in random order, then write them back and do that 100 times, each time with a different order.

That's basically the test I try to run on each device to test the driver functionality.

Here with CtrlX I ran into a few problems Added "trivial, minor and major" to indicate how they impact my work or the functionality of the driver:

• (minor) Time types are correctly supported within the CodeSys PLC, but when exported to the datalayer, they are all reduced to simple numeric values and the metadata doesn't provide means of interpreting them as a time, date or duration, they just become numeric values.

• (minor) All other PLC types I have worked with support addressing parts of multi-dimensional arrays. In CtlrX it seems that you can either address the full array or leaf-elements, but not branches. So if for example /plc/app/Application/sym/PLC_PRG/g_matI16_2x3 addresses the full 2x3 array and /plc/app/Application/sym/PLC_PRG/g_matI16_2x3/2,3 one element, there's no way to address all 3 elements of array 1 (/plc/app/Application/sym/PLC_PRG/g_matI16_2x3/1)

• (trivial) When fetching a multi-dimmensional array, the result is a flat array and my driver needs to convert that back into a multi-dimmensional array.

• (major) Even if fetching multi-dimmensional arrays of simple types seems to work, this doesn't seem to work in case of multi-dimmensional arrays of user-defined types. Here I'm only getting errors, from the remote when trying to fetch them.

(I added my unit-test as ManualCtrlXDriver.java as "txt" file) This also contains notes I did.

Will now try to convert the temporal types to numeric and at least continue checking the functionality of the reading and writing of UDTs.

I try to build and run the SDK sample "tpm2-webserver" in version 0306 but it fails to generate the snap and one part in the readme file is not clear for me.

I am running a WM Ware virtual machine with Ubuntu 22.04, ctrlX SDK installed, with all scripts recommanded and TPM 2.0 is declared inside my VM.

In the readme file of this exemple, in point 3, it is ask to : Build and install the snap as described in Setup section

Where is the "Setup" action? What should I do?

When I run the script "build-snap-amd64.sh" or "build-snap-arm64.sh" to make the app files, There is always an error :

And when I read the log file (file attached below) :

I don't understand the issue. How get this exemple running?

Thanks for your help

ThibaultM

{
  "$schema": "https://json-schema.boschrexroth.com/ctrlx-automation/ctrlx-core/apps/package-manifest/package-manifest.v1.3.schema.json",
  "version": "1.0.0",
  "id": "sdk-net-hello-web-asp",
  "integration": {
    "type": "ui-extension",
    "path": "/sdk-net-hello-web-asp"
  },
  "services": {
    "proxyMapping": [
      {
        "binding": "unix://{$PACKAGE_WWW_SOCKET}",
        "url": "/sdk-net-hello-web-asp",
        "name": "sdk-net-hello-web-asp.webapp"
      }
    ]
  },
  "uiExtensions": {
    "dashboard": [
      {
        "order": 50,
        "src": "/sdk-net-hello-web-asp/widget/widgets.js",
        "tag": "rexroth-netweb-widget",
        "title": "test-web",
        "description": "Shows the status of test web",
        "categories": [
          "testweb"
        ],
        "i18n": "",
        "image": "/sdk-net-hello-web-asp/widget/assets/refer.svg",
        "initialSize": {
          "rows": 3,
          "cols": 3
        },
        "minSize": {
          "rows": 3,
          "cols": 3
        },
        "maxSize": {
          "rows": 3,
          "cols": 3
        }
      }
    ]
  },
  "menus": {
    "sidebar": [
      {
        "icon": "bosch-ic-grid-view",
        "id": "hello-web-asp",
        "title": "Hello Web ASP.NET",
        "items": [
          {
            "icon": "bosch-ic-grid-view",
            "id": "sdk-net-hello-web-asp",
            "link": "/sdk-net-hello-web-asp/",
            "title": "Hello Web"
          }
        ]
      }
    ]
  }
}

I want to put a private key in TPM2.

The documentation is quite short and though I used the example that was given to get started, I am still struggling with how I am supposed to check on my TPM2.

Do I necessarily need to use SSH to check it? I tried to generate a code using the example in python but I can't seem to manage to find the TPM2 Socket.

Copilot suggests to do that:

snap connections mediation-dnc | grep tpm2-socket 

But I can't test it without SSH. Before I go any further and ask for SSH permissions, is it a requirement?

Is there any more information about TPM2?

Update of 11/12/2025 :

I have a problem finding/creating the tpm2-socket.sock that is at that location : /var/snap/my-project/x9/tpm2-socket/tpm2.sock.

As of now, I'm not sure if that's the correct path.

Thank you