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18 Applied Instructions (Floating Point)
18.20 DTAN / Floating Point Tangent
485
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Appl
ied
 In
stru
cti
ons 
(D
ata O
per
at
io
n)
12
Ap
plied
 Instru
ctio
ns 
(High S
peed 
Process
ing)
13
App
lied Instr
ucti
ons 
(Handy
 
Instruction)
14
Ap
pl
ied In
struct
ions 
(External FX I/O
 
D
evice)
15
Appl
ied
 Instru
cti
ons
 
(External
 Dev
ice 
(op
tional
 dev
ice)
)
16
App
lie
d Instr
uction
(E
xter
nal
 Devi
ce)
17
Ap
pl
ied Inst
ruct
io
ns 
(Dat
a T
ransf
er 2)
18
Appl
ied
 In
stru
cti
ons 
(Float
ing P
oin
t)
19
App
lie
d Instr
uction
(D
at
a Oper
at
ion 2)
20
App
lied Inst
ructi
ons 
(Pos
itioning 
Control)
18.20 DTAN / Floating Point Tangent
Outline
This instruction determines the TAN value of angle (RAD).
→ 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
S: Refer to "Cautions".
Function and operation explanation
1. 32-bit operation (DTAN, DTANP)
The value of angle (binary floating decimal point) specified by 
 is converted into TAN value, and is
transferred to the device specified by 
.
Cautions
1) Some restrictions to applicable devices.
S1: The FX
3U
 and FX
3UC
 PLCs only are applicable.
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
DTAN
32 bits
Continuous
DTAN(EN, s, d);
DTANP
32 bits
Pulse
DTANP(EN, s, d);
Variable
Description
Data type
Input
variable
EN
Execution condition
Bit
Device for storing the RAD (angle) of binary floating decimal point.
FLOAT(Single  
Precision)
Output
variable
ENO
Execution state
Bit
Device for storing the TAN value of binary floating decimal point.
FLOAT(Single  
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
S1
S1
z
S1
z
S1
S1
z
DTAN
EN
ENO
d
s
DTANP
EN
ENO
d
s
Command
input
 Binary floating
decimal point value
Binary floating
decimal point value
DTAN
EN
ENO
d
s
[         +1,         ]RAD 
→ [         +1,         ]TAN
d
s
s
d
RAD value (angle 
× π/180)
Binary floating decimal point value is specified.
TAN value
Binary floating decimal point value
     +1
     +1
d
s
d
s
d
s
Device for storing 
RAD (angle)
Device for storing 
the TAN value