> ## 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.

# CAPLfunctionIso11783SetTPParam

# Iso11783SetTPParam

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

## Function Syntax

```
dword Iso11783SetTPParam( dword ecuHandle, dword what, dword value );
```

## Description

Changing transport protocol settings.

## Parameters

* **ecuHandle**: ECU handle
* **what**: Index of the parameter
  * **1**: Maximum number of bytes, which can be transferred
    * Value Range: 8 \< value \< 117440505
    * Initial Value: 100 MByte
  * **2**: Number of packets, which are requested by CTS
    * Value Range: 1 \< value \< 255
    * Initial Value: 1
  * **3**: Number of packets, which are requested by ECTS (Extended TP)
    * Value Range: 1 \< value \< 255
    * Initial Value: 64
  * **8**: Number of packets, which is used with RTS
    * Value Range: 1 \< value \< 255
    * Initial Value: 255
  * **10**: Set the used debug level
    * Value Range: 0 \< value \< 3
    * Initial Value: 2
  * **11**: Use of network management
    * 0 - deactivate network management
    * 1 - activate network management
    * Value Range: 0 \< value \< 1
    * Initial Value: 1
  * **12**: Target address, which is used for BAM
    * 0 - target address is 0xFF
    * 1 - specific target address is used
    * Value Range: 0 \< value \< 1
    * Initial Value: 0
  * **13**: Priority used by the transport protocol
    * Value Range: 0 \< value \< 7
    * Initial Value: 7
* **value**: New value

## Return Values

0 on success or [error code](../CAPLfunctionsISONLErrorCodes.md)

## Example

```c theme={null}
Iso11783SetTPParam(ecuHdl, 1, 32*1024);
```