Moxa M-1401 Manual descargar pdf (Pagina 119)

ioLogik MXIO DLL API Reference Direct I/O Command Sets

6-82

RTD2K_SetEngUnits

This function code is used to get contiguous RTD channel's

engineering unit.

C/C++

Arguments

Return Value

int RTD2K_SetEngUnits ( int hConnection,

BYTE bytStartChannel,

BYTE bytCount,

WORD wEngUnit[ ]);

hConnection: The handle for an I/O device connection.

bytStartChannel: Specifies the starting channel.

bytCount: The number of channels to be set.

wEngUnit: An array that stores the contiguous RTD

channel's engineering unit, wEngUnit[0]

represents the value of the starting channel.

The values for normal channel are:

0=Celsius

1=Fahrenheit

2=Ohm

Others_: return Illegal Data Value

The values for virtual channels are:

0=Celsius

1=Fahrenheit

Others_: return Illegal Data Value

Succeed MXIO_OK.

Fail Refer to Return Codes.

RTD2K_GetMathPar

This function code is used to get the math parameter for a specific

RTD channel.

C/C++

Arguments

Return Value

int RTD2K_GetMathPar ( int hConnection,

BYTE bytChannel,

WORD * wMathPar );

hConnection: The handle for an I/O device connection.

bytChannel : The specific channel to be get.

wMathPar: A pointer that stores the specific RTD

channel's math parameter. For AVG,Bit 0 of

high byte represents the first channel and Bit

1 of high byte represents the second

channel.For DEV,the 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

Succeed MXIO_OK.

Fail Refer

oRe

n Codes.

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 128 129

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Moxa M-1401 Manual Pagina 119

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