The following must be observed when connecting to an OCPP backend:
- It is recommended to assign a static IP address to the master charging station in the network based on the MAC address of the device.
- The OCPP backend is usually not in the same network, so the charging station must be assigned a “public IP address” that is routed to the internal IP address (NAT).
- The firewall has to be configured in such a way that communication between the charging station and the OCPP backend is possible.
- In the case of a connection via VPN, the IP address of the VPN must be specified in the configuration (web interface) for the downlink.
- With a mobile phone connection, it may be necessary for the required ports to be activated by the mobile phone provider.
For communication with an OCPP backend, the following ports must be enabled in the network: !