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# CAPLfunctionSCCChargeParameterDiscoveryReqDC

[Open topic with navigation](../../../../../CANoeDEFamily.htm#Topics/CAPLFunctions/SmartCharging/Callbacks/CAPLfunctionSCCChargeParameterDiscoveryReqDC.md)

**CAPL Functions** » **Smart Charging** » **SCC Modeling Libraries (Simulation Setup)** » **EVSE Callback Functions** » **SCC\_ChargeParameterDiscoveryReqDC**

# SCC\_ChargeParameterDiscoveryReqDC

[Valid for](../../../Shared/FeatureAvailability.md): CANoe DE • CANoe4SW DE

**Note**

* `<InvalidValueSigned>` and/or `<InvalidValueUnsigned>` can be defined in the XML configuration.
* These are returned if an optional numeric message parameter was queried by this function but not found.
* See [Configuration of Vehicle SCC Nodes](../../../CANoeCANalyzer/SmartCharging/SCProcedures/SCCConfigurationVehicleSCCNodes.md) or [Configuration of Chargepoint SCC Nodes](../../../CANoeCANalyzer/SmartCharging/SCProcedures/SCConfigurationChargePointSCCNodes.md).

## Function Syntax

```plaintext theme={null}
void SCC_ChargeParameterDiscoveryReqDC 
( byte SessionId[], double EVEnergyCapacity, 
double EVEnergyRequest)
```

## Description

The callback is called as soon as a Charge Parameter Discovery Request is received.

Further details that are transmitted in this request can be queried with the following functions:

* [SCC\_GetEnergyTransferType](../Functions/CAPLfunctionSCCGetEnergyTransferType.md)
* [SCC\_GetDepartureTime](../Functions/CAPLfunctionSCCGetDepartureTime.md)
* [SCC\_GetMaxVoltage](../Functions/CAPLfunctionSCCGetMaxVoltage.md)
* [SCC\_GetMaxCurrent](../Functions/CAPLfunctionSCCGetMaxCurrent.md)
* [SCC\_GetMinCurrent](../Functions/CAPLfunctionSCCGetMinCurrent.md) (AC)
* [SCC\_GetMaxPower](../Functions/CAPLfunctionSCCGetMaxPower.md) (DC)
* [SCC\_GetFullSOC](../Functions/CAPLfunctionSCCGetFullSOC.md) (DC)
* [SCC\_GetBulkSOC](../Functions/CAPLfunctionSCCGetBulkSOC.md) (DC)
* [SCC\_GetMaxEntriesSAScheduleTuple](../Functions/CAPLfunctionSCCGetMaxEntriesSAScheduleTuple.md) (ISO 15118)
* [GetDC\_EVStatus](../Functions/CAPLfunctionSCCGetDCEVStatus.md)

## Parameters

* **SessionID**: 8-byte long SessionID of SCC connection, range: 0 – 0xFF FF FF FF FF FF FF FF.
* **EVEnergyCapacity (DC)**: Maximum supported power.
* **EVEnergyRequest (DC)**: Energy required by the vehicle.

## Return Values

—

## Example

—