Function blocks
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MN05013005E
183
Boolean operation
EZD provides 32 function blocks from BV01 to BV32 for
Boolean operations with values.
The following possibilities are provided by the Boolean
operation function block:
• Screening out of particular bits from values,
• Bit pattern recognition,
• Bit pattern modification.
A Boolean operation function block is not wired in the circuit
diagram.
Parameter display and parameter set for Boolean operation
function block:
Only constants can be modified in the parameter display of a
function block.
Operating modes of the Boolean operation function block
BV27 AND
+
>I1
>I2
QV>
BV27
Boolean operation function block number 27
AND
AND operation mode
+
Appears in the parameter display
>I1
First value
>I2
Second value
QV>
Result of the operation
Parameter
Function
AND
AND operation
OR
OR operation
XOR
Exclusive OR operation
NOT
Negation of the Boolean value of
>I1