Delta-electronics DELTA DUP-B Uživatelský manuál stáhnout pdf (Strana 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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