462
Special Math Instructions Section 3-13
Note If the “Data length specification for S and D” in bit 10 of C is set to
1 and a 16-bit constant is input for S, the input data will be convert-
ed to 32-bit signed binary before the linear extrapolation calcula-
tion.
• Floating-point Data
Note If the “Floating-point specification” in bit 09 of C is set to 1, a con-
stant cannot be input for S.
Flags
Precautions The actual result for SIN(90
°) and COS(0°) is 1, but 9999 (0.9999) will be out-
put to R.
An error will occur if C is a constant greater than 0001.
An error will occur if linear extrapolation is specified but the X coordinates are
not in ascending order (X
1
< X
2
< ... < X
m
).
An error will occur if linear extrapolation is specified and BCD input is speci-
fied (bit 15 of C ON) but S is not BCD.
An error will occur if a trigonometric function is specified (C=0000 or 0001) but
S is not BCD between 0000 and 0900.
Examples Sine Function (C: #0000)
The following example shows APR(069) used to calculate the sine of 30
°.
Setting name Bit in C Setting
Input data (S) format 15 0: Binary
Output data (D) format 14 0: Binary
Source data form 13 0
Signed data specification for S and D 11 0
Data length specification for S and D 10 0
Floating-point specification 09 1: Floating-point data
Name Label Operation
Error Flag ER ON if C is a constant greater than 0001.
ON if C is a word address but the X coordinates are not in
ascending order (X
1
≤ X
2
≤ ... ≤ X
m
).
ON if C is a word address and bits 9, 11, and 15 of C indi-
cate BCD input, but S is not BCD.
ON if C is a word address and bit 9 of C indicates floating-
point data, but S is a one-word constant.
ON if C is 0000 or 0001 but S is not BCD between 0000
and 0900.
OFF in all other cases.
Equals Flag = ON if the result is 0000.
OFF in all other cases.
Negative Flag N ON if bit 15 of R is ON.
OFF in all other cases.
S: D0 R: D100
010
1
10
0
10
–1
10
–1
10
–2
10
–3
10
–4
0300 5 0 0 0
Source data Result
Set the source data in 10
1
degrees.
(0000 to 0900, BCD)
Result data has four significant digits,
fifth and higher digits are ignored.
(0000 to 9999, BCD)
0.00
D0
D100
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