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**CAPL Functions » Ethernet » Function Overview » ethernetPacket::FaultInjectFCS**

# ethernetPacket::FaultInjectFCS

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

## Method Syntax

dword [ethernetPacket](../Objects/CAPLfunctionEthernetPacket.md).FaultInjectFCS ( word fcs );

## Description

Set the frame checksum of the packet to an invalid value, which is not recalculated on sending.

**Note**

* Only supported with Vector Ethernet network interfaces.
* Same behavior as [output( ethernetpacket, word fcs )](../Functions/CAPLfunctionOutputEthernet.md).

## Parameters

* **fcs**: Ethernet packet check sequence.

## Return Values

* **0**: success

## Example

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[See Also](javascript:void\(0\);)
