5 Function blocks
5.5 BV, Boolean operation
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
159
5.5 BV, Boolean operation
The function block enables the values to be combined in Boolean (logic)
operations. It has the following functions:
•
Masking out of particular bits from values,
•
Bit pattern recognition,
•
Bit pattern modification.
easy800 device allows the use of up to 32 Boolean operations.
Contacts and Coils
Example of a function block for Boolean operation
Figure 109:Wiring of the contact to marker
Parametric programming of the function block inputs/outputs
When using the function block in the circuit diagram for the first time, use
OK to automatically enter the general display of function block parameters,
as shown in the figure on the left. Enter the function block settings here.
The display contains the following elements:
Operating mode
This parameter is used to set the type of operation required.
The factory setting of this parameter is AND.
Contacts
Meaning
BV..ZE
Result at output QV> is zero
BV01ZE------------------------
Ä
M 48
BV01 AND +
>I1
>I2
QV>
BV01
Function block: Boolean operation, number 01
AND
Operating mode: AND
+
Parameter set can be called via the PARAMETERS menu
>I1
First value (32-bit), the data block at this input is associated with the value at I2
>I2
Second value: (32-bit)
QV>
Result of the operation (32 Bit)
Parameter
s
Function
AND
AND operation
OR
OR operation
XOR
Exclusive OR operation
NO T
Negation of the Boolean value of
>I1
