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ACOSD(P)
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and
an error code is stored into SD0.
• The value of the specified device is not in the following range: (Error code: 4140)
0,2
-1022
| value of specified device | < 2
1024
• The value of the designated device is 0. (Error code: 4140)
• The value specified by is within the double-precision floating-point range and outside
the range of -1.0 to 1.0. (Error code: 4100)
• The result exceeds the following range (Operation results in an overflow):
2
1024
| Operation result | (Error code: 4141)
Program Example
(1) The following program seeks the inverse cosine of the 64-bit floating decimal point real
number at D0 to D3, and outputs the angle to the 4 BCD digits at Y40 to Y4F.
[Ladder Mode]
[List Mode]
[Operations involved when the D0 to D3 value is 0.5]
S
Calculates an angle (radian value) by COS
operation ( ).
Converts the radian value into an angle ( ).
Converts the angle in 64-bit floating-point
real number into an integer ( ).
Outputs
the integer-converted angle to a
display device ( ).
1
1
2
3
4
Step Instruction Device
64-bit floating-point
real number
D1
0.5
D0D3 D2
64-bit floating-point
real number
D21
60
D20D23 D22
64-bit floating-point
real number
D11
1.047198
D10D13 D12
Conversion
to BIN
INTD
BCD operation
BCD
ACOSD
Conversion to angle
DEGD
Y4F
BCD value
0
060
Y40
D30
b15 b0
BIN value
60
COS operation
1
1
2
3
4