Calculating The Arc Sine - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

26.9

Calculating the Arc Sine

ASIN(_E)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These functions output the arc sine (SIN
Ladder, FBD/LD
[Without EN/ENO]
s d
Setting data
■Description, type, data type
Argument Description
EN Execution condition (TRUE: Executed, FALSE: Not executed)
s (IN) Input
ENO Output status (TRUE: Normal, FALSE: Abnormal)
d Output
Processing details
■Operation processing
• These functions calculate the arc sine (SIN
(d).
• When the input value is defined as A and the output value is defined as B, the relationship of A and B will be as follows:
-1
B=SIN A
• Input a REAL data type value to (s) within the following range.
ASIN(_E): -1.0 to 1.0
• The value (angle) is output from (d) in radians (angle/180).
■Operation result
1.
Function without EN/ENO
The operation processing is performed. The operation result is output from (d).
2.
Function with EN/ENO
The execution conditions and operation results will be as follows.
Execution condition
EN
TRUE (executed)
FALSE (not executed)
*1 If the value FALSE is output from ENO, the output data from (d) will be undefined. Create a program so that the undefined value will not
be used in operations.
Operation error
Error code Description
(SD0)
3402H The input value is -0.
3405H The value input with ASIN(_E) is other than -1.0 to 1.0.
RnSFCPU RnSFCPU
(Standard) (Safety)
-1
) of an input value.
[With EN/ENO]
EN ENO
s d
-1
) of the REAL data type value input to (s), and output the operation result from
Operation result
ENO
TRUE
*1
FALSE
Structured text
[Without EN/ENO]
d:=ASIN(s);
[With EN/ENO]
d:=ASIN_E(EN,ENO,s);
Type
Input variable
Input variable
Output variable
Output variable
(d)
Operation result output value
Undefined value
26 SINGLE VARIABLE FUNCTIONS
Data type
BOOL
ANY_REAL
BOOL
ANY_REAL
26.9 Calculating the Arc Sine
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