Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual de usuario Pagina 101

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8 Supplementary Information
93
Type
Operator
Syntax Example
Meaning
...BN)
enclosed in the parentheses.
If-Then-Else
Expressions
if then
else
if A then B else D
If-then-else expression: returns B if A is
true&emdash;otherwise it returns D
Performance Equation Functions
You can also evaluate expressions that contain FactoryTalk Historian
Performance Equation functions:
Math Functions (page 94)
Aggregate Functions (page 95)
Miscellaneous Functions (page 95)
FactoryTalk Historian Archive Retrieval (page 96)
FactoryTalk Historian Archive Search (page 96)
FactoryTalk Historian Archive Statistics (page 97)
Point Attributes (page 97)
Time Functions (page 98)
Dynamic Response (page 99)
Alarm Status Functions (page 99)
String Functions (page 99)
String Conversion (page 100)
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