Mitsubishi MELSEC-Q/L - Page 521

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RAD, RADP
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7.12 Special function instructions 7.12.13 RAD, RADP
Program Example
(1) The following program seeks the inverse tangent 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 D0 to D3 value is 1]
: Angle to be converted to radian units or head number of the devices where the angle is stored (real number)
: Head number of the devices where the value converted in radian units will be stored (real number)
*1: Applicable for the Universal model QCPU, LCPU.
7.12.13 RAD, RADP Conversion from floating-point angle to radian
(Single pre cision)
7.12.13 RAD, RADP
• Basic model QCPU: The serial number (first five digits) is
"04122" or later.
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
E
Other
Bit Word Bit Word
–– ––
*1
––
–– ––
*1
–– ––
1
Calculates an angle (radian value) by TAN
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 ( ).
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Step Instruction Device
64-bit floating-point
real number
64-bit floating-point
real number
D1
1
D0D3 D2
64-bit floating-point
real number
D21
45
D20D23 D22
D11
0.785398
D10D13 D12
Conversion
to BIN
INTD
BCD operation
BCD
ATAND
Conversion to angle
DEGD
Y4F
BCD value
0
0 4 5
Y40
D30
b15 b0
BIN value
45
TAN operation
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Basic
Process
High
performance
Redundant Universal LCPU
Ver.
Command
Command
RADP
RAD
RADP
RAD S D
S D
S
D
S
D