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Sgilk · ‎10-26-2023

Yes, some of the information is a bit dated, but the process is the same. The most current endpoints will be in the Swagger docs. What I meant is there is no datalayer access via methods included in the SDK (take a look at this example: Python Datalayer Client). The REST API will be your only means of datalayer access in Java. Like @MauroRiboniMX says above, you'll use the Authorization and Authentication API to handle access.

Sgilk · ‎10-26-2023

It looks like the app is installed correctly. Can you not access your routes? Ex. http://localhost:3000/items If after reboot and switching the control into operating mode you still cannot access, there may be a problem with the app. You can view the status & logs over SSH in the virtual CORE. Under device settings in ctrlX Works, select this option. Then, log into the QEMU emulator using the credentials below. Username: rexroot Password: rexroot Run the commands below to find your app name and view the snap logs. sudo snap list sudo snap logs app_name Additional information can be found by sudo systemctl status sudo journalctl

Sgilk · ‎10-26-2023

You can write the app in Java, but won't have access to the SDK datalayer methods in this language. A great starting point is the API reference built into the ctrlX WebUI. The Swagger documentation is interactive and allows you to play around with pre built REST calls. Some basic information on the ctrlX REST API can be found in the attached document. Here is also a How-To on using the REST API: Using-REST-API-of-ctrlX-CORE

Sgilk · ‎10-25-2023

Hello, I'm wondering if this is an issue with the web panel Kiosk mode or the WebVisu app itself. In your screenshot, it looks like that app might also be down, which may cause the Kiosk mode to timeout. Do you have the proper license installed for Codesys WebVisu extension? I know they allow the application to run for a trial period without the license. When the web panel is showing this error, can you connect to the WebVisu web server from a different client device?

Sgilk · ‎10-25-2023

Hello, See the following note in the ctrlx_datalayer_helper.py: IMPORTANT: You need not change the parameter settings before building a snap and installing the snap on a ctrlX CORE. The method get_connection_string detects the snap environment and uses automatically inter process communication. Therefore the connection string to the ctrlX Datalayer is: "ipc://" The connection string paramaters are configurable so you can connect the app to an external CORE. As an example, you could read/write datalayer nodes on a physical CORE directly from your app build environment. If running locally, as a snap, ipc communication is used automatically.

About Sgilk

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