Integrating OCPP chargers at filling stations

OCPP is the defacto standard protocol to communicate with charging stations. This paper shows how an OCPP charging station and a CSO back-end can be integrated with a point of sales (POS) terminal of a filling station, and what the flow of information is for the various payment options.

Integration with a POS can be achieved via a roaming protocol that connects to the charging station management system (CSMS) of the CSO or via a local controller that sits between POS and charging station.