Справочник Пользователя для Mitsubishi Electronics FXCPU
490
18 Applied Instructions (Floating Point)
18.23 DATAN / Floating Point Arc Tangent
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
18.23 DATAN / Floating Point Arc Tangent
Outline
This instruction executes TAN
-1
operation.
→ As for handling of floating decimal point, refer to FX Structured Programming Manual [Device &
Common].
1. Format and operation, execution form
2. Set data
3. Applicable devices
Function and operation explanation
1. 32-bit operation (DATAN/DATANP)
The angle is calculated from the TAN value specified by
, and the operation result is stored in the device
specified by
. Real number can be directly specified by the device specified by
.
• The angle (operation result) to be stored in the device specified by
stores the value larger than (
−π/2)
and smaller than (
π/2) in the radian unit.
As for conversion from radian to angle or vice versa, refer to DRAD instruction or DDEG instruction.
→ As for DRAD instruction, refer to section 18.24.
→ As for DDEG instruction, refer to section 18.25.
FX
3U(C)
FX
3G(C)
FX
3S
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD
ST
DATAN
32 bits
Continuous
DATAN(EN, s, d);
DATANP
32 bits
Pulse
DATANP(EN, s, d);
Variable
Description
Data type
Input
variable
variable
EN
Execution condition
Bit
Head device for storing the TAN value for TAN
-1
operation (reverse
tangent).
FLOAT(Single
Precision)
Precision)
Output
variable
variable
ENO
Execution state
Bit
Head device for storing the operation result.
FLOAT(Single
Precision)
Precision)
Operand
type
Bit Devices
Word Devices
Others
System user
Digit designation
System
user
Special
unit
Index
Cons
tant
Real
Number
Character
String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D
R
U
\G
V Z Modifier K H
E
"
"
P
z z
z
z
z
z z
z
z
DATAN
EN
ENO
d
s
DATANP
EN
ENO
d
s
Command
input
input
DATAN
EN
ENO
d
s
+1
Binary floating decimal
point (real number)
point (real number)
+1
Binary floating decimal
point (real number)
point (real number)
TAN
-1
d
s
s
d
Head device for storing
the TAN value for TAN
the TAN value for TAN
-1
operation
Device for storing
the operation result
the operation result