Delta Electronics DVP15MC11T, Operation Manual

Page: 148 / 601

Chapter 8 Logic Instructions
8_
8.8.11 RadToDeg
FB/FC Explanation Applicable model
FC
DegToRad is used to convert radians to degrees.
DVP15MC11T

Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
In Radians Input Radians to convert
Depends on the data type of
the variable that the input
parameter is connected to.
Out Degrees Output
Degrees converted from
radians
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

RadToDeg is used to convert the input parameter In to degrees and the result is output to Out . That
is, Out =( In/
π
)* 180.

The units of In and Out are radian and degree (°) respectively.

Users can choose different data types for the input parameter in this instruction. But the data type of
the output parameter is restricted to LREAL. An error will occur during the compiling of the software
if the data type of the output parameter is not LREAL.

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 RadToDeg _In and Out1 are INT and LREAL respectively. The value of
Out1 is 572. 957795130824 if the value of RadToDeg _In is 10 when RadToDeg _EN changes to
TRUE. The value of Out1 is -572. 957795130824 as RadToDeg _In is -10.
Rad ToDeg
EN ENO
In Ou t
8-77