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# GPIBReqRelSysCtrl

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

## Function Syntax

```
long GPIBReqRelSysCtrl 
(long boardIdx, long mode);
```

## Description

Sets or deletes the permission to send interface clear (IFC) or remote enable (REN). If mode is "0," the GPIB board surrenders system control and all controller-specific commands are not allowed. If mode = "1," then controller-specific commands are allowed.

## Parameters

* **boardIdx**: GPIB Board ID
* **mode**: (0..1)

## Return Values

* [Status](../CAPLfunctionsGPIBStatus.md)
* **-1**: On error, if no GPIB driver is available

## Example

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