National Instruments BridgeVIEW 用户手册

Chapter 3 Tag Configuration

BridgeVIEW User Manual 3-10 © National Instruments Corporation

How Do You Configure Tags?

When you configure a tag with the Tag Configuration Editor, you define 
several attributes for the tag. You can separate these attributes into five 
categories: general, connection, operations, scaling, and alarms. Each of 
these categories is explained in detail later in this section. 

If you import tag configuration information from a spreadsheet, follow 
the same format in your spreadsheet as indicated in the Attribute column 
of each of the tables listed above. For more information about using 
spreadsheets, see the 

 section in this chapter.

Data Type

Configuration of a tag varies slightly depending on the data type. 
The following sections discuss the details of tag configuration for each 
data type.

Analog Tags

 is a continuous value representation of a connection to 

a real-world I/O point or memory variable. This type of tag can vary 
continuously over a range of values within a signal range.

Use an analog tag when you want to express a continuous value 
(for example, 0 to 100).

Discrete Tags

A

 is a two-state (ON/OFF) value representation of a 

connection to a real-world I/O point or memory variable. This type of 
tag can be either a 1 (TRUE) or a 0 (FALSE).

Use a discrete tag when you want to express a two-state (ON/OFF) value.

Bit Array Tags

 is a multi-bit value representation of a connection to a 

real-world I/O point or memory variable. This type of tag can be comprised 
of up to 32 discrete values.

Use a bit array tag when you have a multi-bit value in which each of the 
bits represents a flag or single value that is turned on or off. The maximum 
length of a bit array tag is 32.