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# CAPLfunctionIso11783ILOPOnStateChange

[Open topic with navigation](../../../../../../CANoeDEFamily.htm#Topics/CAPLFunctions/ISO11783/ISOInteractionLayer/Functions/CAPLfunctionIso11783ILOPOnStateChange.md)

**CAPL Functions** » **ISO11783** » **ISO11783 Interaction Layer** » **Iso11783IL\_OPOnStateChange**

# Iso11783IL\_OPOnStateChange

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

## Function Syntax

```plaintext theme={null}
void Iso11783IL_OPOnStateChange( dword state );
```

## Description

The function is called by the node layer, if the state of the Object Pool API has changed.

## Parameters

* **state**: State of the Object Pool API
  * 0: not active
  * 1: wait until ECU is online
  * 2: wait for the status message from the VT
  * 3: initialization phase with the VT
  * 4: object pool upload is active or load version active
  * 5: active

## Return Values

—

## Example

```plaintext theme={null}
void Iso11783IL_OPOnStateChange( dword state )
{
}
```