This table provides an overview of the standard configuration keys defined in the OCPP 1.6 specification. Each entry includes the key name, whether it is required or optional, its accessibility (read-only or read-write), data type, associated feature profile, and a brief description of its function within the charging system. This resource is essential for configuring and understanding the capabilities of OCPP-compliant charging stations.

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Core Profile

Key Name	Required/Optional	Read/Write	Type	Description
AllowOfflineTxForUnknownId	Optional	RW	Boolean	If this key exists, the Charge Point supports Unknown Offline Authorization. If true, Unknown Offline Authorization is enabled.
AuthorizationCacheEnabled	Optional	RW	Boolean	If this key exists, the Charge Point supports an Authorization Cache. If true, the Authorization Cache is enabled.
AuthorizeRemoteTxRequests	Required	R or RW	Boolean	Whether a remote request to start a transaction in the form of a RemoteStartTransaction.req message should be authorized beforehand like a local action.
BlinkRepeat	Optional	RW	Integer	Number of times to blink Charge Point lighting when signaling.
ClockAlignedDataInterval	Required	RW	Integer	Size (in seconds) of the clock-aligned data interval.
ConnectionTimeOut	Required	RW	Integer	Interval from the beginning of status ‘Preparing’ until an incipient transaction is automatically canceled.
ConnectorPhaseRotation	Required	RW	CSL	The phase rotation per connector in respect to the connector’s electrical meter (or if absent, the grid connection).
ConnectorPhaseRotationMaxLength	Optional	R	Integer	Maximum number of items in a ConnectorPhaseRotation Configuration Key.
GetConfigurationMaxKeys	Required	R	Integer	Maximum number of requested configuration keys in a GetConfiguration.req PDU.
HeartbeatInterval	Required	RW	Integer	Interval of inactivity (no OCPP exchanges) with the central system after which the Charge Point should send a Heartbeat.req PDU.
LightIntensity	Optional	RW	Integer	Percentage of maximum intensity at which to illuminate Charge Point lighting.
LocalAuthorizeOffline	Required	RW	Boolean	Whether the Charge Point, when offline, will start a transaction for locally-authorized identifiers.
LocalPreAuthorize	Required	RW	Boolean	Whether the Charge Point, when online, will start a transaction for locally-authorized identifiers without waiting for an Authorize.conf from the Central System.
MaxEnergyOnInvalidId	Optional	RW	Integer	Maximum energy in Wh delivered when an identifier is invalidated by the Central System after the start of a transaction.
MeterValuesAlignedData	Required	RW	CSL	Clock-aligned measurand(s) to be included in a MeterValues.req PDU, every ClockAlignedDataInterval seconds.
MeterValuesAlignedDataMaxLength	Optional	R	Integer	Maximum number of items in a MeterValuesAlignedData Configuration Key.
MeterValuesSampledData	Required	RW	CSL	Sampled measurands to be included in a MeterValues.req PDU, every MeterValueSampleInterval seconds. Default: “Energy.Active.Import.Register”.
MeterValuesSampledDataMaxLength	Optional	R	Integer	Maximum number of items in a MeterValuesSampledData Configuration Key.
MeterValueSampleInterval	Required	RW	Integer	Interval between sampling of metering (or other) data, intended to be transmitted by “MeterValues” PDUs.
MinimumStatusDuration	Optional	RW	Integer	The minimum duration that a Charge Point or Connector status is stable before a StatusNotification.req PDU is sent to the Central System.
NumberOfConnectors	Required	R	Integer	The number of physical charging connectors of this Charge Point.
ResetRetries	Required	RW	Integer	Number of times to retry an unsuccessful reset of the Charge Point.
StopTransactionOnEVSideDisconnect	Required	RW	Boolean	When set to true, the Charge Point SHALL administratively stop the transaction when the cable is unplugged from the EV.
StopTransactionOnInvalidId	Required	RW	Boolean	Whether the Charge Point will stop an ongoing transaction when it receives a non-Accepted authorization status in a StartTransaction.conf for this transaction.
StopTxnAlignedData	Required	RW	CSL	Clock-aligned periodic measurand(s) to be included in the TransactionData element of StopTransaction.req MeterValues.req PDU for every ClockAlignedDataInterval.
StopTxnAlignedDataMaxLength	Optional	R	Integer	Maximum number of items in a StopTxnAlignedData Configuration Key.
StopTxnSampledData	Required	RW	CSL	Sampled measurands to be included in the TransactionData element of StopTransaction.req PDU, every MeterValueSampleInterval seconds.
StopTxnSampledDataMaxLength	Optional	R	Integer	Maximum number of items in a StopTxnSampledData Configuration Key.
SupportedFeatureProfiles	Required	R	CSL	A list of supported Feature Profiles. Possible profile identifiers: Core, FirmwareManagement, LocalAuthListManagement, Reservation, SmartCharging, and RemoteTrigger.
SupportedFeatureProfilesMaxLength	Optional	R	Integer	Maximum number of items in a SupportedFeatureProfiles Configuration Key.
TransactionMessageAttempts	Required	RW	Integer	How often the Charge Point should try to submit a transaction-related message when the Central System fails to process it.
TransactionMessageRetryInterval	Required	RW	Integer	How long the Charge Point should wait before resubmitting a transaction-related message that the Central System failed to process.
UnlockConnectorOnEVSideDisconnect	Required	RW	Boolean	When set to true, the Charge Point SHALL unlock the cable on Charge Point side when the cable is unplugged at the EV.
WebSocketPingInterval	Optional	RW	Integer	Only relevant for websocket implementations. 0 disables client-side websocket Ping/Pong. Positive values are interpreted as the number of seconds between pings.

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Local Auth List Management Profile

Key Name	Required/Optional	Read/Write	Type	Description
LocalAuthListEnabled	Required	RW	Boolean	Whether the Local Authorization List is enabled.
LocalAuthListMaxLength	Required	R	Integer	Maximum number of identifications that can be stored in the Local Authorization List.
SendLocalListMaxLength	Required	R	Integer	Maximum number of identifications that can be sent in a single SendLocalList.req.

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Reservation Profile

Key Name	Required/Optional	Read/Write	Type	Description
ReserveConnectorZeroSupported	Optional	R	Boolean	If this configuration key is present and set to true: Charge Point supports reservations on connector 0.

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Smart Charging Profile

Key Name	Required/Optional	Read/Write	Type	Description
ChargeProfileMaxStackLevel	Required	R	Integer	Max StackLevel of a ChargingProfile. The number defined also indicates the max allowed number of installed charging schedules per Charging Profile Purposes.
ChargingScheduleAllowedChargingRateUnit	Required	R	CSL	A list of supported quantities for use in a ChargingSchedule. Allowed values: ‘Current’ and ‘Power’.
ChargingScheduleMaxPeriods	Required	R	Integer	Maximum number of periods that may be defined per ChargingSchedule.
ConnectorSwitch3to1PhaseSupported	Optional	R	Boolean	If defined and true, this Charge Point supports switching from 3 to 1 phase during a Transaction.
MaxChargingProfilesInstalled	Required	R	Integer	Maximum number of Charging profiles installed at a time.

EVSEAdmin users can manage charging station configuration keys in the “Stations” section under the “Advanced” tab. Use this functionality with caution, as some configuration keys are set by our Central System during the provisioning process after the station boots.