Mitsubishi FX3G Series Programming Manual

502
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.12 FNC124 – EXP / Floating Point Exponent
18.12 FNC124 – EXP / Floating Point Exponent
Outline
This instruction executes exponential operation whose base is "e (2.71828)".
→ For handling of floating point, refer to Subsection 5.1.3.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 32-bit operation (DEXP and DEXPP)
The exponent of [ +1, ] is calculated, and the operation result is stored to [ +1, ].
A real number can be directly specified as .
• In the exponential operation, the base (e) is set to "2.71828".
Error
An operation error occurs in the following case; The error flag M8067 turns ON, and the error code is stored in D8067.
• When the operation result is outside the following range (error code: K6706)
2
−126
≤ | Operation result | < 2
128
Operand Type Description Data Type
Head device number storing binary floating point data used in exponential operation.
Real number (binary)
Head device number storing the operation result.
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD.b KnX KnY KnM KnS T C D R U\G VZModifyKH E ""P
33 3 3 3
33 3 3
P
FNC 124
EXP
D
−
−
Mnemonic Operation Condition
16-bit Instruction
DEXP
DEXPP
Mnemonic Operation Condition
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
S
D
S
D
S S D D
S
C
omman
d
input
FNC124
DEXP
S  D 
+1
Binary floating point
(real number)
+1
Binary floating point
(real number)
e
S  S  D  D 

Mitsubishi FX3G Series Specifications

General

Brand	Mitsubishi
Model	FX3G Series
Category	Controller
Language	English