Protocols & standards
OCPP
Open Charge Point Protocol: how chargers talk to the platform.
Voltvik runs a real central system for OCPP 1.6J, 2.0.1 and 2.1 on the same address. For 2.1 that is its core (the 2.0.1 functions plus its new message types); bidirectional charging, DER control and local cost calculation are not built. Chargers an admin has registered connect to wss://<host>/ocpp/<id> with security profile 2 (password over TLS). Supported: boot, heartbeat, status, authorisation, transactions, meter values, remote start/stop, reset, unlock and smart-charging profiles (load management, 1/3 phases). ISO 15118: Autocharge, eMAID authorisation, OCSP status checks and forwarding of contract certificates. Security profile 3: client certificates from the operator's own CA, on a separate TLS port.
wss://<host>/ocpp/<chargePointId> Sec-WebSocket-Protocol: ocpp1.6 | ocpp2.0.1
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