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4-1
C H A P T E R
4
Tagname Dictionary
The Tagname Dictionary (runtime database) is the heart of InTouch. At runtime,
the database contains the current value of all of the items in the database. In order
to create the runtime database, InTouch requires information about all of the
variables being created. Each variable must be assigned a tagname and type.
InTouch also requires additional information for some variable types. For instance,
for I/O type tagnames, InTouch requires more information in order to be able to
acquire the value and convert it for internal use. The Tagname Dictionary is the
mechanism used to enter this information.
The two database utility programs, DBDump and DBLoad are also described in
this chapter. DBDump allows you to export an InTouch application Tagname
Dictionary as a text file which can be accessed from another package such as
Microsoft Excel for modifying, storing, etc. DBLoad allows a database of
tagnames created in another package such as Excel or a DBDump file from another
InTouch application to be loaded into an existing InTouch application.
Contents
n Tagname Dictionary Special Features
n Tagname Types
n Extended Tagname Support
n Defining a New Tagname
n Defining Tagname Details
n Defining Tagname Alarm Conditions
n Creating InTouch SuperTags
n Alternative Methods for Creating SuperTags
n Remote Tagname Referencing
n Creating a Tagname Server Application
n Dynamic Reference Addressing (DRA)
n The Tag Browser
n InTouch Cross Reference Utility
n Printing Tagname Dictionary Details
n Deleting Tagnames from the Dictionary
n Displaying the Tagname Usage Count
n Substituting Tagnames
n Converting Placeholder Tagnames
n Scaling I/O Tagnames
n Internal System $Tagnames
n Tagname .Fields
n Tagname Dictionary Utilities