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Compatible charge points

Why OCPP is preferred for charge point control​

The OCPP (Open Charge Point Protocol) is the industry-standard protocol for communicating with charging stations. It is designed specifically for managing and controlling charging infrastructure, unlike Modbus which is a generic industrial protocol.

Using OCPP enables in particular:

  • charging session management
  • user authentication
  • charge point status reporting
  • energy meter reading
  • dynamic power control (smart charging)
  • access to logs and diagnostics

By contrast, Modbus mainly allows reading and writing low-level registers and does not natively provide the mechanisms required to fully manage a charge point.

For this reason, charge point control is always preferred via OCPP when available, Modbus being mostly used for energy equipment such as meters, photovoltaic inverters, or batteries.