> ## Documentation Index
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# CAPLfunctionFDXDisableFreeRunningMode

# FDXDisableFreeRunningMode

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

## Function Syntax

```
long FDXDisableFreeRunningMode(long fdxClientHandle, word groupID);
```

## Description

This function disables the **Free Running** mode for the specified FDX client. The behavior of the function corresponds to the reception of a **FreeRunningCancel** command via the [FDX protocol](../../../CANoeCANalyzer/Interfaces/FDXProtocol.md).

You can find further information about the **Free Running** mode in the manual [CANoe\_FDX\_Protocol\_EN.pdf](javascript:startDemoLoader\('CANoe_FDX_Protocol_EN.pdf'\)).

## Parameters

* **fdxClientHandle**: FDX Client for which the **FreeRunningMode** should be activated.
* **groupID**: Identifies the data group inside the FDX description file.

## Return Values

* **0**: Successful function call
* **-1**: The parameter **fdxClientHandle** is invalid.

## Example

[Coupling of two CANoe Instances using the FDX Protocol](../../../CANoeCANalyzer/Interfaces/FDXProtocolCouplingCANoeInstances.md)