National Instruments BridgeVIEW How Do You Monitor and Control Tags?

Chapter 4 Human Machine Interface

BridgeVIEW User Manual 4-16 © National Instruments Corporation

How Do You Monitor and Control Tags?

The Tags VI library and Alarms and Events VI library contain VIs for your

HMI application to interact with the BridgeVIEW Real-Time Database.

These are the primary VIs you use to build your HMI. You can use these

VIs to accomplish the following:

• Read tag values

• Write tag values

• Monitor tag and tag group alarm and event states

• Acknowledge alarms by tag and tag group

There are other VI libraries that contain VIs with which you can add

additional functionality and sophistication to your HMI. These VIs do not

interact directly with the BridgeVIEW RTDB. Instead, you can query as

well as control other features of the BridgeVIEW system. These VI

libraries are as follows:

• Tag Attributes

• Historical Data

• System, which includes Security VIs

You can reach these VIs through the Functions palette, shown below.