DioLevelShifterGetLoadResistance

Applies To

GC5050, GX5050, GX5150

Purpose

Returns the group load settings.

Syntax

DioLevelShifterGetLoadResistance (nHandle, nGroup, pdwLoadVal, pnStatus)

Parameters

Name	Type	Comments
nHandle	SHORT	Board handle.
nGroup	SHORT	Group number can be as follows: 0 Group A, I/O pins 1 through 16. 1 Group B, I/O pins 17 through 32.
pdwLoadVal	PDWORD	Returned specified group load value. Value range from 50 Ohms to –1 (No-Load)
pnStatus	PSHORT	Returned status: 0 on success, negative number on failure.

Comments

In order to maintain signal levels and automatically compensate for internal voltage drop the Level-Shifter is calibrated for a range of loads. The load value must be set before setting the voltage in order to take effect.

Example

The following example returns the current load settings of group 0:

SHORT nStatus;

DWORD dwLoad;

DioLevelShifterGetLoadResistance (nHandle, 0, &dwLoad, &nStatus);