Floating-Point Tan Operation - Mitsubishi Electric MELSEC Q Series Programming Manual

6 IEC FUNCTIONS

6.4.6 Floating-point TAN operation

-1
The TAN (arctangent) of the specified TAN value is operated.
Function definition
Function definition
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-1
REAL ATAN( REAL S1 );
Argument
Argument Name IN/OUT
S1 IN
Return value
Return Value
-1
TAN operation result (real number data)
REAL
Remarks: This function cannot be used with the Basic model QCPU.
The operation result is the angle data in radian unit.
Example of use
Argument Type
REAL w_Real1 := ATAN( w_Real2 ); LD
BOOL ATAN_E( BOOL EN, REAL S1, REAL D1 );
Argument
Argument Name IN/OUT
EN IN
S1 IN
D1 OUT
Remarks: The operation result is the angle data in radian unit.
Return value
Return Value
BOOL Execution condition
Example of use
(* When execution condition X0 turns ON, the angle is operated from the TAN
(* value stored in rData, and the result is stored into Result.
M0 := ATAN_E( X0, rData, Result ) ;
ATAN
ATAN_E
-1
TAN value to be TAN
ST Program Conversion Result
ATAN
Execution condition (Function is executed only when the result is TRUE)
-1
TAN value to be TAN
-1
TAN operation result (real number data)
Description
(arctangent) operated (real number data)
Description
Used Instruction
SM400 LD,ATAN
w_Real2
w_Real1
Description
(arctangent) operated (real number data)
Description
*)
*)
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