18.23 Fnc135 - Atan / Floating Point Arc Tangent - Mitsubishi Electric FX3G SERIES Programming Manual
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FX
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Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
18.23 FNC135 – ATAN / Floating Point Arc Tangent
Outline
This instruction executes the TAN
1. Instruction format
FNC 135
D
ATAN
P
2. Set data
Operand Type
S
D
3. Applicable devices
Bit Devices
Oper-
and
System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
S
D
Explanation of function and operation
1. 32-bit operation (DATAN and DATANP)
An angle is obtained from the tangent value stored in [
A real number can be directly specified as
Command
input
FNC135
DATAN
+1
S
−1
TAN
Binary floating point
(real number)
• The angle (operation result) stored in [
For conversion between radians and degrees, refer to RAD (FNC136) and DEG (FNC137) instructions.
−1
(arc tangent) operation.
Mnemonic
16-bit Instruction
−
−
Head device number storing a tangent value used in the TAN
Head device number storing the operation result
Digit Specification
S
S
D
S
D
Binary floating point
D
18.23 FNC135 – ATAN / Floating Point Arc Tangent
→ For handling of floating point, refer to Subsection 5.1.3.
Operation Condition
32-bit Instruction
9 steps
Description
−1
(arc tangent) operation
Word Devices
Special
System User
Unit
V
S
+1,
S
], and stored to [
.
+1
D
(real number)
] is expressed in radians (from −π/2 to +π/2).
+1,
D
→ For RAD (FNC136) instruction, refer to Section 18.24.
→ For DEG (FNC137) instruction, refer to Section 18.25.
18 Floating Point – FNC110 to FNC139
Mnemonic
Operation Condition
Continuous
DATAN
Operation
Pulse (Single)
DATANP
Operation
Data Type
Real number (binary)
Others
Con-
Real
Charac-
Index
stant
Number
ter String
Z Modify K H
E
" "
D
+1,
D
].
11
12
13
14
Pointer
15
P
16
17
18
19
20
527
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