CHARGING STATION
STATUS
Released
DOCUMENT ID.
TBA
REV.
A
LANG.
EN
PAGE
31/37
© Copyright 2019 ABB. All rights reserved.
When connecting to an OCPP backend, note the following:
•
It is recommended that the master charging station on the network be assigned a static IP
address based on the MAC address of the device.
•
Since the OCPP backend is usually not in the same network, the charging station must be
assigned a "public IP address" which is routed to the internal IP address (NAT).
•
The firewall must be configured so that a communication between the charging station and the
OCPP backend is possible.
•
For a connection via VPN, the IP address of the VPN must be specified in the configuration (web
interface) for the downlink.
•
In the case of a GSM connection, it may be necessary for the required ports to be activated by the
cellular service provider.
Ports for communication via OCPP
For communication with an OCPP backend, the following ports must be enabled in the network:
Port
Protocol
Definition
Description
Custom
(1025 65535)
TCP
Can be reached
externally (incoming)
OCPP Charge Point Service: This
service is related to the OCPP
backend.
•
The port can be freely selected
or it is specified by the OCPP
backend. However, the port
may only be located in the
range from 1025 to 65535.
•
The selected port must be
configured on the charging
station.
Custom
TCP
Access to external
(outgoing)
Port at which the OCPP backend can
be reached.
123
UDP
Incoming and outgoing
Port for the timer server of the
charging station.
4.4.
UDP interface
The charging station offers the possibility of passing information and receiving commands via the User
Datagram Protocol (UDP). This can be used, for example, for integration into a Smart Home. For more
information, see the "UDP Programming Guide", which is available in the download area on the ABB
website.
4.5.
Integration of external meters
The charging station can read the measured values from external meters using Modbus TCP. This allows
an intelligent calculation of the charging current provided to the vehicle, and the charging process is
optimized. The measured values read are included in the charging current specification. The following
graphic shows the schematic structure of the system.