DI_Read

 

This function code is used to read the status of a specific D/I channel.

 

C/C++

int DI_Read( int hConnection,

BYTE bytSlot,

BYTE bytChannel,

BYTE * bytValue);

 

Visual Basic

Declare Function DI_Read Lib "MXIO.dll" (ByVal hConnection As Long, ByVal bytSlot As Byte, ByVal bytChannel As Byte, bytValue As Byte) 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 32. But this parameter is inactive in ioLogik 2000.

bytChannel

The specific channel to be read.

bytValue

A pointer that stores a specific D/I channel status.

 

Return Value:

Succeed

MXIO_OK

Fail

Refer to Return Codes.