DVP15MC11T Operation Manual
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.
The value of Out varies between -π/2 and π/2 when the value of In changes between -1.0 and 1.0.
The instruction will not go to the error state if the value of In is out of -1.0 ~1.0 and the value of Out is
nonnumeric as shown in the following table and program.
The variable table and program
ASIN_EN
BOOL
TRUE
ASIN_In
REAL 2.0
Out1
LREAL 1.#QNAN
1
ASIN
EN ENO
In Out
ASIN_EN
ASIN_In Out1
Programming Example
The data types of variables ASIN_In and Out1 are REAL and LREAL respectively. The value of
Out1 is 1.5707963267949 if the value of ASIN_In is 1.0 when ASIN_EN changes to TRUE. The
value of Out1 is -1.5707963267949 as ASIN_In is -1.0.
Variable 1
Variable 2
Out
In
2
2
-
0
1,0-1,0
In Input data Sine: ( )
Out: Asine in radians ( )
π
π
8-86