Delta-electronics DELTA DUP-B Manual de usuario Pagina 367

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Chapter 3 Creating and Editing Screens
IF…ELSEIF…ELSE…ENDIF
Equation
IF expression1
Statement1
ELSEIF expression2
Statement2
ELSE
Statement3
ENDIF
Explanation
This is logical determination from multiple conditions. If expression1 is true,
Statement1 will be executed. If expression1 is false, it will run expression2. If
expression2 is true, Stemenent2 will be executed. If both expression1 and
expression2 are false, Statement3 will be executed. ENDIF should be placed in the
end of the IF comparison command
Remark
Please refer to the Comparison command table on previous page 3-343 for the
command of expression.
Example
IF $0 == 0
$10 = 0
ELSEIF $0 ==1
$10 = 1
ELSE
$10 = 2
ENDIF
If $0 is equal to 0,
$10 is equal to 0;
If $0 is equal to 1, not equal to 0,
$10 is equal to 1;
If $0 is equal to neither 0 nor 1,
$10 is equal to 2.
3-346 Revision May, 2010
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