Rockwell Automation FactoryTalk View Machine Edition Users Guide - Manual (Page 565)

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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.