Rockwell-automation FactoryTalk View Machine Edition Users Guide Manuel d'utilisateur télécharger pdf (Page 565)

100

101

30-1

Use macros

This chapter describes:

 Use macros to assign values to tags.

 Use the Macros editor.

 When to use macros.

 Running macros when tags or expressions change value.

 Where to assign macros.

Use macros to assign values to tags

A macro is a list of tag assignments stored in a text file, in the format <tag>=<value>.

Each assignment assigns a value to a tag. The value can be in the form of another tag, an

expression, a numeric constant, or a string.

Examples: Use macros to set tag values

Tag1 = 8

Sets the value of Tag1 to 8.

Tank1\Message = “Tank1 overflow”

Sets the string tag Tank1\Message to Tank1 overflow.

Tag1 = Tag2

Sets the value of Tag1 to be the same as Tag2.

Tag1 = Tag1 + 1

Increases the value of Tag1 by 1.

Tag1 = if (Tag2 < Tag1) then 4 else 3

Performs the if-then-else calculation and stores the result in Tag1.

1Pump = {Industry-2} + {2Pump}

Adds the values of Industry-2 and 2Pump and stores the result in 1Pump.

Brackets surround Industry-2 because of the dash in the name. Brackets surround 2Pump

because the name starts with a number. No brackets are used for 1Pump because this name

is on the left side of the equal sign.

For more information about expression syntax, see Chapter 23.

1 2 ... 560 561 562 563 564 565 566 567 568 569 570 ... 676 677

Commentaires sur ces manuels

Pas de commentaire

Rockwell-automation FactoryTalk View Machine Edition Users Guide Manuel d'utilisateur Page 565

Commentaires sur ces manuels

Produits connexes et manuels pour Équipement Rockwell-automation FactoryTalk View Machine Edition Users Guide