ABB ACS 800 Series, Application Manual

Page: 18 / 44

Function blocks
18
Function blocks
ABS Type Arithmetic function
Illustration
Operation The output is the absolute value of input I1 multiplied by I2 and divided by I3.
O = I1 · I2 / I3
Connections Input I1, I2 and I3: 24 bit integer values (23 bits + sign)
Output (O): 24 bit integer (23 bits + sign)
ADD Type Arithmetic function
Illustration
Operation The output is the sum of the inputs.
O = I1 + I2 + I3
Connections Input I1, I2 and I3: 24 bit integer values (23 bits + sign)
Output (O): 24 bit integer (23 bits + sign)
AND
Type Logical function
Illustration
Operation The output is true if all connected inputs are true. Otherwise the output is false.
Truth table:
I1
I2
I3
ABS
O
I1
I2
I3
ADD
+
O
I1
I2
I3
AND
&
O
I1 I2 I3 O (binary) O (value on display)
0 0 0 False (All bits 0) 0
0 0 1 False (All bits 0) 0
0 1 0 False (All bits 0) 0
0 1 1 False (All bits 0) 0
1 0 0 False (All bits 0) 0
1 0 1 False (All bits 0) 0
1 1 0 False (All bits 0) 0
1 1 1 True (All bits 1) -1