Pepper Computer RS485, RS232 user manual SMDAD1PutV Syntax, RetVal = SMDAD1PutV0, 1, 0x7FF

SMART I/O User’s Manual Chapter 5 Analog Modules

5.1.8.7 SMDAD1PutV

Syntax

error_code SMDAD1PutV(u_int8 PortNr, u_int8 Channel, int16 Value);

Description

This function sets the selected DAC channel to the chosen value. A gain and offset correction is performed with the use of the automatically selected conversion table depending whether a user-defined table has been specified or not. Hence, if a user-defined table exists then this will be used, otherwise the default factory set table will be used.

Input

u_int8 PortNr u_int8 Channel

int16 Value

Output

error_code

Example

SM-Port number to be accessed

Number of the DAC output channel to access (0-1)

Value to be written

SUCCESS	if module was not initialized
E_SEEK
E-BMODE	if the module is unknown

or standard OS-9 error code (refer to the OS-9 Technical Manual Error Codes Section).

RetVal = SMDAD1PutV(0, 1, 0x7FF);

							Value (16-bit HEX)
				Unipola		r		Bipolar
			Positive Full-Scale $0FFF					Positive Full-Scale	$07FF
				+1LSB	$0001			+1LSB	$0001
0					$0000			0	$0000
								-1LSB	$FFFF
								Negative Full-Scale	$F800
	Page	5 - 22			©1996 PEP Modular Computers GmbH					March 12, 1996