Filter
Top Products
18 Applied Instructions (Floating Point)
18.12 DEXP / Floating Point Exponent
471
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Applied Instructions
(Data Operation)
12
Applied Instructions
(High Speed
Processing)
13
Applied Instructions
(Handy
Instruction)
14
Applied Instructions
(External FX I/O
Device)
15
Applied Instructions
(External Device
(optional device))
16
Applied Instructions
(External Device)
17
Applied Instructions
(Data Transfer 2)
18
Applied Instructions
(Floating Point)
19
Applied Instructions
(Data Operation 2)
20
Applied Instructions
(Positioning
Control)
18.12 DEXP / Floating Point Exponent
Outline
This instruction executes exponential operation whose base is "e (2.71828)".
→ 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 (DEXP/DEXPP)
By exponential operation of the device specified by , the operation result is stored in the device specified
by . Real number can be directly specified in the device specified by .
• In exponential operation, the bottom (e) is supposed to be 2.71828.
FX3U(C) FX3G(C) FX3S FX2N(C) FX1N(C) FX1S FXU/FX2C FX0N FX0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD ST
DEXP 32 bits Continuous DEXP(EN, s, d);
DEXPP 32 bits Pulse DEXPP(EN, s, d);
Variable Description Data type
Input
variable
EN Execution condition Bit
Head device for storing binary floating decimal point data for exponential
operation.
FLOAT(Single
Precision)
Output
variable
ENO Execution state Bit
Head device for storing the operation result.
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
XYMTCS
D.b
KnX KnY KnM KnS T C D R
U\G
VZModifierKH E
"
"
P
zz z z z
zz z z
DEXP
EN ENO
d
s
DEXPP
EN ENO
d
s
Head device for storing binary floating
decimal point data for exponential operation
Head device for storing
the operation result
Command
input
DEXP
EN ENO
d
s
+1
Binary floating decimal point
(real number)
+1
Binary floating decimal point
(real number)
e
ds ds