Delta DVP-15MC Series, Руководство по эксплуатации

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Chapter 8 Logic Instructions
8-99
8_
FB/FC Explanation Applicable model
FC
LN is used to find the natural logarithm of a number and the result is output
to Out .
DVP15MC11T
DVP15MC11T-06

Parameters
Parameter
name
Meaning
Input/
Output
Description Valid range
In
Number to
process
Input Number to process
Depends on the data type of
the variable that the input
parameter is connected to.
Out Logarithm Output The natural logarithm of In
Depends on the data type of
the variable that the output
parameter is connected to.
B
oo
le
an
Bit string Integer
Real
number
Time, date
S
tr
in
g
B
OOL
BYT
E
WO
R
D
DW
O
RD
LW
O
R
D
US
INT
UI
NT
UDI
NT
UL
INT
SI
N
T
IN
T
DI
NT
LI
N
T
R
EA
L
L
R
E
AL
T
IME
D
AT
E
T
O
D
DT
S
T
RI
NG
In
● ● ● ● ● ● ● ● ● ● ● ● ● ●
Out
●
Note:
The symbol
●
indicates that the parameter is allowed to connect to the variable or constant of the data
type.

Function Explanation

LN is used to calculate the natural logarithm of the input parameter In, that is the logarithm with e
（
e=2.718282
）
as the base , and the result is output to Out .
LN
EN ENO
In Ou t
1
1
0
2 .7 18 2 8 2
In
Ou t