Rockwell-automation FactoryTalk View Machine Edition Users Guide Instrukcja Użytkownika Pobierz pdf (Strona 499)

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Use embedded variables

This chapter describes:

 The types of embedded variables.

 Where you can create embedded variables.

 Create embedded variables.

 Embedded variable syntax.

 How embedded variables are updated at run time.

 How embedded variables are shown at run time.

About embedded variables

Embedded variables allow you to show values that change dynamically at run time. You

can use embedded variables in the text captions on graphic objects, in the title bar of On

Top displays, and in message text. You can use multiple embedded variables in the same

caption or message.

For example, you could embed a tag value and the time variable in a local message. At run

time when the local message is shown, it is updated to reflect the tag’s current value as the

value changes. The time is also updated as the time changes.

You can also use literal strings and constants in embedded variables, or a combination of

both variable and literal strings and numbers.

Embedded variables can consist of:

 Numeric (analog or digital) tags, including both HMI and data server tags.

 Literal numbers (constants).

 String tags, including both HMI and data server tags.

 Literal strings (static text).

 Tag placeholders. For information about tag placeholders, see page 20-40.

 The time.

 The date.

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