W5K_DO_Reads_Ex

 

This function code is used to read the output statuses of contiguous D/O channels.

 

C/C++

int W5K_DO_Reads_Ex( int hConnection,

BYTE bytStartChannel,

BYTE bytCount,

DWORD * dwValue,

BYTE BytSlot);

 

Visual Basic

Declare Function W5K_DO_Reads_Ex Lib "MXIO.dll" (ByVal hConnection As Long, ByVal bytStartChannel As Byte, ByVal bytCount As Byte, nValue As Long, ByVal bytSlot As Byte) As Long

 

Arguments:

hConnection

The handle for an I/O device connection.

bytStartChannel

Specifies the starting channel.

bytCount

The number of channels to be read.

dwValue

A pointer that stores the contiguous D/O channel's status; each bit holds one channel value. A bit value of 0 represents the digital output status of the start channel. A bit value of 1 represents the status of the second digital output channel. The values of the unused bits are random.

bytSlot

Slot number of the I/O module. The Slot number ranges from 0 to 3. (0 for W5000 module)

 

Return Value:

Succeed

MXIO_OK

Fail

Refer to Return Codes.