Overview

Analog output channel functions This group defines all functions to output analog signals on specific channels.

Collaboration diagram for Analog Output:

Functions
long	LCAIO_GetOutputSwScalingParam (dev_hdl OutChanHdl, double pScalingFactor, double pScalingOffset)
	Query software scaling parameters. More...

long	LCAIO_GetOutputValue (dev_hdl OutChanHdl, double *pfValue)
	Return the output value of this channel. More...

long	LCAIO_SetOutputSwScalingOn (dev_hdl OutChanHdl, int ScalingOn)
	Enable / disable software scaling. More...

long	LCAIO_SetOutputSwScalingParam (dev_hdl OutChanHdl, double ScalingFactor, double ScalingOffset)
	Set software scaling parameters. More...

long	LCAIO_WriteOutput (dev_hdl OutChanHdl, double fValue)
	Set analog output value of single channel. More...

Function Documentation

long LCAIO_GetOutputSwScalingParam	(	dev_hdl	OutChanHdl,
		double *	pScalingFactor,
		double *	pScalingOffset
	)

Query software scaling parameters.

Parameters

[in]	OutChanHdl	Handle to analog output channel
[out]	pScalingFactor	The scaling factor multiplied with field value
[out]	pScalingOffset	The scaling offset added to field value

Return values

ERR_NOERR	indicates success
-ERR_NOTSUP	Linear scaling not supported (i.e. if channel uses a different kind of scaling like PT100 scaling)

See also: LCAIO_SetOutputSwScalingParam(), LCAIO_SetOutputSwScalingOn()

long LCAIO_GetOutputValue	(	dev_hdl	OutChanHdl,
		double *	pfValue
	)

Return the output value of this channel.

Parameters

[in]	OutChanHdl	Handle to analog output channel
[in]	pfValue	Returns the actual set output value

Returns: Error code - ERR_NOERR indicates success

long LCAIO_SetOutputSwScalingOn	(	dev_hdl	OutChanHdl,
		int	ScalingOn
	)

Enable / disable software scaling.

Parameters

[in]	OutChanHdl	Handle to analog output channel
[in]	ScalingOn	1 = Scaling on, 0 = Scaling off

Returns: Error code - ERR_NOERR indicates success

long LCAIO_SetOutputSwScalingParam	(	dev_hdl	OutChanHdl,
		double	ScalingFactor,
		double	ScalingOffset
	)

Set software scaling parameters.

These parameters are used to scale the measured value from device. These scaling parameters are independent from the device scaling parameters and the scaling is performed on the local machine. Scaled Value = (Process Value * Scaling Factor) + Scaling Offset. The default value for Scaling Factor is 1 and for Scaling Offset is 0.

Parameters

[in]	OutChanHdl	Handle to analog output channel
[in]	ScalingFactor	The scaling factor to multiply with field value
[in]	ScalingOffset	The scaling offset ro add to field value

Return values

ERR_NOERR	indicates success
-ERR_NOTSUP	Setting linear scaling parameters not supported (i.e. if channel uses a different kind of scaling like PT100 scaling)

See also: LCAIO_GetOutputSwScalingParam(), LCAIO_SetOutputSwScalingOn()

long LCAIO_WriteOutput	(	dev_hdl	OutChanHdl,
		double	fValue
	)

Set analog output value of single channel.

Parameters

[in]	OutChanHdl	Handle to analog output channel
[in]	fValue	The anlog output value to set

Returns: Error code - ERR_NOERR indicates success

Overview

Functions

Function Documentation