Omron FZ4 Series User Manual page 223

Controls the flow of processing in accordance with the judgement conditions of the logical expressi
If <Logical Expression> Then
<Then statement within the block>
[Elseif <Logical Expression> Then
<Elseif statement within the block>
-]
[Else
<Else statement within the block>]
Endif
Parameters
<Logical Expression>
<Then statement within the
block>
<Elseif statement within the
block>
<Else statement within the
block>
Return Value
None.
Description
Controls the flow of processing in accordance with the Logical Expression.
If the condition of the <Logical Expression after If is true (other than 0), the <Then statement within the
block> right after it is executed.Refer to Calculation for details on logical expressions and Boolean
values.
Reference: Calculation (p.159)
If the condition of the <Logical Expression after Elseif is true (other than 0), the <elseifstatement within
the block> right after it is executed.
When all of the <Logical Expressions> are false, the elsestatement within the block> is executed.
Multiple Elseif clauses can be used. It is also possible to omit it.
The Else clause can be omitted.
The Endif statement cannot be omitted.
When multiple <Logical Expressions> are true, the statement within the block of the first <Logical
Expression> that is true is executed.
Moving control from outside the select block to the inside or moving control from inside it to the outside
using statements such as the goto statement is not possible.
Example
Reference the correlation value and change the message to be displayed on the monitor.
FZ4 User's Manual
The logical expression (Boolean expression) for controlling processing.
The statement to be executed (statement) when the result of the <Expression>
after If is true.
The statement to be executed (statement) when the result of the <Expression>
after Elseif is true.
The statement to be executed (statement) when all the <Expressions> are false.
Using Custom Command
4
221