E42_DI_Reads

 

This function code is used to read the status of a group of contiguous D/I channels.

 

C/C++

int E42_DI_Reads( int hConnection,

BYTE bytSlot,

BYTE bytStartChannel,

BYTE bytCount,

DWORD * dwValue);

 

Visual Basic

Declare Function E42_DI_Reads Lib "MXIO.dll" (ByVal hConnection As Long, ByVal bytSlot As Byte, ByVal bytStartChannel As Byte, ByVal bytCount As Byte, nValue As Long) As Long

 

Arguments:

hConnection

The handle for an I/O device's connection.

bytSlot

Slot number of the I/O module. The Slot number ranges from 1 to 16. But this parameter is inactive in ioLogik 2000.

bytStartChannel

Specifies the starting channel.

wCount

The number of channels to be read.

dwValue

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

 

Return Value:

Succeed

MXIO_OK

Fail

Refer to Return Codes.