National Instruments BridgeVIEW What Is the Tag Configuration Editor?

Chapter 3 Tag Configuration

Alarm attributes describe abnormal process conditions for a given tag.

Alarms are useful for notifying users of abnormal conditions. For example,

if an analog tag measures the volume of a tank, a HI alarm can be used to

indicate that the tank is full and an operator must perform some action

and acknowledge this state before processing can proceed. For information

on how to configure alarming attributes of a tag, see the Alarms section

later in this chapter.

Tag attributes are classified as either static or dynamic attributes. Static

attributes require you to restart the Engine when you change them from

the Tag Configuration Editor. A static attribute change is marked with

a solid diamond in the Tag Configuration Editor. Examples of static

attributes are general attributes and I/O connection attributes, such as

server, device, or item.

Dynamic attributes do not require the Engine to restart. The Tag

Configuration Editor can change a dynamic tag attribute in a running

Engine. A dynamic attribute change is marked with a hollow diamond in

the Tag Configuration Editor. Examples of dynamic attributes include

enabling logging operations, alarm attributes, and some scaling attributes.

For more information about dynamic tag attributes, see the Tag Attributes

VIs section of Chapter 7, Advanced Application Topics.

What Is the Tag Configuration Editor?

The Tag Configuration Editor is a tool that assists you in configuring all

the parameters of the BridgeVIEW Engine. The chief component of this

tool is the configuration of all tags in the system. Other configuration

components include Alarm and Event Logging, and Historical Logging.

To start the Tag Configuration Editor, select Project»Tag»

Configuration… from the menu bar of an open VI. Figure 3-1 shows

the Tag Configuration Editor with tanks.scf loaded.