RTD2K_SetMathPars

 

This function code is used to set contiguous RTD virtual channel's math parameter.

 

C/C++

int RTD2K_SetMathPars ( int hConnection,

BYTE bytStartChannel,

BYTE bytCount,

WORD wMathPar[ ]);

 

Visual Basic

Declare Function RTD2K_SetMathPars Lib "MXIO.dll" (ByVal hConnection As Long, ByVal bytStartChannel As Byte, ByVal bytCount As Byte, iMathPar As integer) As Long

 

Arguments:

hConnection

The handle for an I/O device connection.

bytStartChannel

Specifies the starting channel.

bytCount

The number of channels to be set.

wMathPar

An array that stores the contiguous RTD virtual channel's math parameter, wMathPar[0] represents the value of the starting channel. The values are :

For AVG,Bit 0 of high byte represents the first channel and Bit 1 of high byte represents the second channel.

For DEV,High-Byte as subtrahend and Low-Byte as minuend.

Exp AVG( b'0000-0000 b'0010-0011) = ch5+ch1+ch0

Exp DEV( b'0000-0100 b'0010-0000) = ch2-ch6

 

Return Value:

Succeed

MXIO_OK

Fail

Refer to Return Codes.