> ## Documentation Index
> Fetch the complete documentation index at: https://notevil.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CAPLfunctionFRGetRateCorrection

[Open topic with navigation](../../../../../CANoeDEFamily.htm#Topics/CAPLFunctions/FlexRay/Functions/CAPLfunctionFRGetRateCorrection.md)

[CAPL Functions](../../CAPLfunctions.md) » [FlexRay](../CAPLfunctionsFlexrayOverview.md) » frGetRateCorrection

# frGetRateCorrection

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

**Note**

[FlexRay bus statistics](../CAPLfunctionsFlexrayOverview.md#BMBusStatistics) for CAPL is deactivated by default and must be activated before calling this function. You can do this by calling function [frEnableStatistics](CAPLfunctionFREnableStatistics.md) in an **on start {}** handler, see example below.

## Function Syntax

```
long frGetRateCorrection(long channel, long channelMask);
```

## Description

Gets the rate correction of a FlexRay channel.

## Parameters

* **channel**\
  FlexRay channel (1…32).

* **channelMask**\
  Channel mask
  * 1 = subchannel A
  * 2 = subchannel B

## Return Values

Rate correction, if FlexRay statistics is enabled; 0 otherwise.

## Example

```c theme={null}
on start
{
  frEnableStatistics(1, 1); // Enable FlexRay statistics on channel 1
}

void myStatisticFunc()
{
  long value;

  value = frGetRateCorrection(1, 1); // Channel 1, subchannel A
  // … do something with the value …
}
```