625
Floating-point Math Instructions Section 3-15
Precautions The source data in S+1 and S must be in IEEE754 floating-point data format.
3-15-18ARC COSINE: ACOS(464)
Purpose Calculates the arc cosine of a 32-bit floating-point number and places the
result in the specified result words. (The arc cosine function is the inverse of
the cosine function; it returns the angle that produces a given cosine value
between –1 and 1.)
Ladder Symbol
Variations
Applicable Program Areas
Operand Specifications
ACOS(464)
S
R
S: First source word
R: First result word
Variations Executed Each Cycle for ON Condition ACOS(464)
Executed Once for Upward Differentiation @ACOS(464)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
Area S R
CIO Area CIO 0000 to CIO 6142
Work Area W000 to W510
Holding Bit Area H000 to H510
Auxiliary Bit Area A000 to A958 A448 to A958
Timer Area T0000 to T4094
Counter Area C0000 to C4094
DM Area D00000 to D32766
EM Area without bank E00000 to E32766
EM Area with bank En_00000 to En_32766
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants #00000000 to #FFFFFFFF
(binary)
---
Data Registers ---
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