# outpd

long outpd (short portNumber, long doubleWord);

## Purpose

Writes a double word (long int) to a port.

| Note outpd requires the LabWindows/CVI low-level support driver. LabWindows/CVI loads the driver at startup if it is on disk. You can check whether LabWindows/CVI loaded the driver at startup by calling CVILowLevelSupportDriverLoaded.

## Parameters

Input
Name | Type | Description
portNumber | short | The port to which the double word is written.
doubleWord | long | The double word (long int) written to the port.

## Return Value

Name | Type | Description
wordWritten | long | The double word written to the port.