Communication and Networking Systems Flashcards

Which protocol is most commonly used for communication between EV charging stations and a central management system?

Answer: OCPP (Open Charge Point Protocol)

OCPP (Open Charge Point Protocol) is the industry-standard open protocol used for communication between EV charging stations and back-end management systems.

What does the acronym OCPP stand for?

Answer: Open Charge Point Protocol

OCPP stands for Open Charge Point Protocol, the open standard for communication between EV charging equipment and network management systems.

Which network technology is most commonly used for long-distance remote monitoring of EVSE installations?

Answer: Cellular (4G/LTE)

Cellular (4G/LTE) is the most commonly used technology for remote EVSE monitoring because it provides wide-area connectivity without requiring local network infrastructure.

What is the primary function of a Charge Management System (CMS)?

Answer: Monitor and control multiple EV charging stations remotely

A Charge Management System (CMS) provides centralized remote monitoring, control, billing, and reporting for multiple EV charging stations.

Which OCPP message does a charging station send to a central system when it first comes online?

Answer: BootNotification

The BootNotification message is sent by a charging station to the central system upon startup to register itself and receive configuration parameters.

ISO 15118 is primarily used in EV charging for:

Answer: Vehicle-to-grid communication and Plug & Charge authentication

ISO 15118 defines the communication protocol between EVs and EVSE, enabling features like Plug & Charge (automatic authentication) and vehicle-to-grid (V2G) communication.

Which OCPP version introduced JSON as a primary messaging format alongside SOAP?

Answer: OCPP 1.6

OCPP 1.6 introduced JSON over WebSocket as an alternative to SOAP/XML, making integration lighter-weight and more developer-friendly.