Delta Electronics DVP15MC11T, Operation Manual

Page: 144 / 601

Chapter 8 Logic Instructions
8_
8.8.9 ABS
FB/FC Explanation Applicable model
FC
ABS finds the absolute value of an integer or a real number.
DVP15MC11T

Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
In
Number to
process
Input Number to process
Depends on the data type of
the variable that the input
parameter is connected to.
Out Absolute value Output Absolute value of In
Depends on the data type of
the variable that the output
parameter is connected to.
B
ool
ean
Bit string Integer
Real
number
Time, date
St
rin
g
B
O
O
L
BYT
E
WO
RD
D
WO
R
D
L
W
O
R
D
U
SI
N
T
U
IN
T
U
DI
NT
U
L
INT
SI
N
T
IN
T
D
IN
T
L
IN
T
R
EAL
L
R
EAL
T
IM
E
D
AT
E
TOD
D
T
ST
R
IN
G
In
● ● ● ● ● ● ● ● ● ● ● ● ● ●
Out
● ● ● ● ● ● ● ● ● ● ● ● ● ●
Note:
The symbol
●
indicates that the parameter is allowed to connect to the variable or constant of the data type.

Function Explanation

ABS finds the absolute value of the input parameter In . The result is output to Out . That is, Out = |
In1 |.

The input variable and output variable are allowed to be of different data types in this instruction.
When the data types of input and output variables are different, the range of the data type of the
output variable must include the valid ranges of data types of all input variables. Otherwise, there
will be an error during the compiling of the software.

Precautions for Correct Use

The input variable is not allowed to omit. An error will occur during the compiling of the software if
the input variable is omitted. But the output variable is allowed to omit.

Programming Example

The data types of variables ABS _In and Out1 are both INT and the value of ABS _In is -10. The
value of Out1 is 10 when ABS _EN changes to TRUE. The value of Out1 is 20 as ABS_In is 20.
ABS
EN ENO
In Ou t
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