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Backend Integration
The Spelsberg wallbox is able to exchange data with a backend, to allow these to be processed there, or it can be managed by a backend. Communication with a backend from the Spelsberg wallbox takes place via standard interfaces and protocols. The Open Charge Point Protocol (OCPP) is now established in the field of charging stations for electric vehicles and allows standardised exchange of data between a charging station and an external backend. This allows vendor-neutral communication between a charging station and a management system. There are a number of versions of the OCPP with the Spelsberg Wallbox Smart Pro supporting version 1.6, and in the future Version 2.0 will also be available by over-the-air update. To the list of compatible backend systems.
Parameter configuration
For configuration of communications between wallbox and external backend system, open the app and go to System - Settings. Open "Advanced settings" and select "OCPP".
The following parameters must be set:
1. "Backend connection type" parameter
- Select whether the wallbox currently connects with the internet via Ethernet or WLAN
2. "OCPP backend URL" parameter
- Enter here the WS/WSS-URL of the OCPP backend server. This Information is provided by the external backend system.
3. "OCPP ChargePointID" parameter
- Enter the charging point ID for this charging point. The charging point ID is the unique identifier of the charging point in the backend system and accordingly is generated there.
4. "OCPP backend password" parameter
- Enter the password for the OCPP backend, to allow a link to be established.
5. "OCPP mode" parameter
- At present only Version OCPP-J 1.6 is supported, meaning that no selection is possible. In future updates further OCPP versions will be made available.
If further settings are required by the respective backend, the following parameters can be processed by displaying the expert settings. To do this, open the app and go to System - Settings. Open "Advanced settings" and display "Expert settings". Now select "OCCP".
The "OCPP SSL client mode" parameter configures the encryption between the wallbox and the external backend system. Changes to the encryption process are dictated by the external backend system.
"OCPP WebSocket Proxy URL" parameter: URL of the WebSocket Proxy in the format HOST:PORT. Specification of the port is optional (if not specified, port 80 is used) and is dictated by the external backend's server.
"WebSockets Keep-Alive interval" parameter: This setting depends on what interval the server requires. Using keep-alive can be beneficial if you use a NAT router between charging point and backend, to prevent closing of the WebSocket connection.