User manual

Chapter 3 Software Overview

Digital Change Detection Applications

with 653X Devices

For change detection on the 653X,seethe

DIG_Block_PG_Config

function in the function reference. For message generation on the 653X and

many other devices, see the

Config_DAQ_Event_Message

function in

the function reference.

Figure 3-18. Basic Digital Change Notification

To configure change notification, call

DIG_Change_Message_Config

With

DIG_Change_Message_Config

, you can configure individual

digital lines for rising, falling, or rising and falling edge detection. Call

DIG_Filter_Config

to enable filtering on some or all of the lines.

The next step is to start change detection messaging by calling the

DIG_Change_Message_Control

function with the start control code.

To stop change notification, call

DIG_Change_Message_Control

with

the stop control code. These steps form the basis of a basic digital change

notification application.

Enable filtering?

Yes

Configure Change Notification

Stop?

DIG_Change_Message_Control

DIG_Change_Message_Config

DIG_Filter_Config

Stop Change Notification

Start Change Notification