Vigor VS Series - Page 283

277
D A C O S P
S
D
1
2
M
3
○○○
FNC
134
X Y M S
D.b R.b
KnX KnY
KnM KnS
T C
D,R
V,Z
UnG
K,H
E
" $"
S
D
S
D
DACOS D0 D10
X0
S
D
- 1.0 ≦ S ≦ 1.0
○
Calculate Arc Cosine
Operand
Devices
- 1
COS
0.5
=
1.047198
(D1, D0) BIN floating number
(D11, D10) BIN floating number
The calculated result at the (D11, D10) is by the value of radians and the range is between 0 and π .
S
For to convert the angle unit between the radians and degrees, please refer to the DEG and RAD instructions.
S
Degree = Radian ×180 / π
This instruction is a 32-bit instruction. Therefore, be sure to input DACOS or DACOSP in the program.
D
The source operand must assign to a BIN oating point number for the calculation, and the calculated result
is by the BIN oating point format, too.
The format for storing a oating point number will occupy two Registers in the PLC system. Please refer to the
section 2-13 “Numerical System” for the reference of the oating point number.
The PLC will identify it as an operating error if the value of is exceeded the available range -1.0 ~ 1.0.
S : the source device for input the value of cosine
D : the device to store the calculated result (unit: radian)
-1
This instruction performs the mathematical Arccosine (inverse cosine or cos ) operation by the designated
BIN oating point cosine value, and the result of radians is stored in the designated device.
When X0 = “ON”, the instruction is activated, it uses the BIN oating point cosine value at (D1, D0) to calculate the
Arccosine value, and the result of radians will be stored at the specied destination devices (D11, D10).