α
2
Simple Application Controllers
Function Blocks 6
6 - 51
6.22 Addition Block
The function block is used to summate inputs A and B hence produce the resultant Y.
Table 6.22: Addition Function Block
Setup of the Addition Function Block directly from the
α
2
Series Controller
1 ) Allocate the input pin to be used for the function block.
2 ) Press the “OK” key with the cursor in the function block. The function block edit screen is
displayed as shown.
3 ) Press the “OK” Key and enter the function block settings using the “ and ” keys. The
Addition operation Y=A+B must be specified.
4 ) Using the “ and ” keys highlight Constant A and press the “OK” key to enter either a
Directset, Analog In or FB Value.
5 ) Repeat step 4 for Constant B and return to the FBd using the “ESC” key.
Function
Set Item
Description
I
Input pin for addition function block
FB
This function block operates the expression Y=A+B.
The value of Y,A and B is in the range: -32768 to 32767
a) A,B
- Constant value (Setting range:-32768 to 32767
- Analog value
- FB value
Output
1) Word Output
When the input pin is ON, Y=A+B is executed and the word output
will be given the result. When the input pin is OFF the expression is
not executed and the Y value will retain the last result.
2) Bit Output
- Operation result Y<32768: Output pin turned ON and the operation
result Y will be set to -32767
- Operation result Y>32767: Output pin turned ON and the operation
result Y will be set to 32767
0 0
0
D
A
O
I
D
P
B001 : A
Cha ng e No
De l e t e FB
D
D
Se t up FB
B001 : A D
D
Ou t pu t a
V l
y =A+B
0
D i r e c t Se t
Ana l o g I n
FB Va l u e
B001 : A D
D
