Function Blocks; Abs; Add; And - ABB ACS800 Application Manual

18

Function blocks

ABS

Type
Illustration
Operation
Connections

ADD

Type
Illustration
Operation
Connections

AND

Type
Illustration
Operation
Function blocks
Arithmetic function
ABS
I1
I2
O
I3
The output is the absolute value of input I1 multiplied by I2 and divided by I3.
O = I1 · I2 / I3
Input I1, I2 and I3: 24 bit integer values (23 bits + sign)
Output (O): 24 bit integer (23 bits + sign)
Arithmetic function
ADD
+
I1
I2
O
I3
The output is the sum of the inputs.
O = I1 + I2 + I3
Input I1, I2 and I3: 24 bit integer values (23 bits + sign)
Output (O): 24 bit integer (23 bits + sign)
Logical function
AND
&
I1
I2
O
I3
The output is true if all connected inputs are true. Otherwise the output is false.
Truth table:
I1 I2 I3 O (binary)
0 0 0 False (All bits 0)
0 0 1 False (All bits 0)
0 1 0 False (All bits 0)
0 1 1 False (All bits 0)
1 0 0 False (All bits 0)
1 0 1 False (All bits 0)
1 1 0 False (All bits 0)
1 1 1 True (All bits 1)
O (value on display)
0
0
0
0
0
0
0
-1