User manual

Chapter 3 Software Overview

General-Purpose Counter/Timer Functions

Use the General-Purpose Counter/Timer (

GPCTR

) functions with the

E Series, 622X,660X,671X, NI-TIO based, and DSA devices. Refer to the

GPCTR

functions in the NI-DAQ Function Reference Online Help file for a

detailed description of how to use the

GPCTR

functions for a variety of

applications.

GPCTR_Change_Parameter

Customizes the counter operation to fit

the requirements of your application by

selecting a specific parameter setting.

GPCTR_Config_Buffer

Assigns the buffer that NI-DAQ uses for

a buffered counter operation.

GPCTR_Control

Controls the operation of the

general-purpose counter.

GPCTR_Read_Buffer

Transfers data from the previously

assigned buffer during an asynchronous

counter operation.

GPCTR_Set_Application

Selects the application for which you use

the general-purpose counter. The function

description in the NI-DAQ Function

ReferenceOnlineHelpfile contains

many application tips.

GPCTR_Watch

Monitors the state of the general-purpose

counter and its operation.