FC5A
M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y
‐
B1273
18
‐
1
18:
L
OGARITHM
/
P
OWER
I
NSTRUCTIONS
Introduction
This
chapter
describes
logarithm
and
power
instructions
which
are
used
to
calculate
logarithm
or
powered
values
of
source
devices.
LOGE
(Natural
Logarithm)
Applicable
CPU
Modules
Valid
Devices
For
the
valid
device
address
range,
see
pages
and
(
Basic
Vol.).
When
the
data
designated
by
source
device
S1
is
less
than
or
equal
to
0
or
does
not
comply
with
the
normal
floating
‐
point
format,
a
user
program
execution
error
will
result,
turning
on
special
internal
relay
M8004
and
ERR
LED
on
the
CPU
module.
Since
the
LOGE
instruction
is
executed
in
each
scan
while
input
is
on,
a
pulse
input
from
a
SOTU
or
SOTD
instruction
should
be
used
as
required.
Valid
Data
Types
Example:
LOGE
FC5A
‐
C10R2/C/D
FC5A
‐
C16R2/C/D
FC5A
‐
C24R2/C/D
FC5A
‐
D16RK1/RS1
FC5A
‐
D32K3/S3
FC5A
‐
D12K1E/S1E
X
X
X
X
X
X
Device
Function
I
Q
M
R
T
C
D
Constant
Repeat
S1
(Source
1)
Binary
data
to
convert
into
natural
logarithm
— — — — — —
X
X
—
D1
(Destination
1)
Destination
to
store
conversion
results
— — — — — —
X
—
—
W
(word)
—
I
(integer)
—
D
(double
word)
—
L
(long)
—
F
(float)
X
log
e
S1
∙
S1+1
D1
∙
D1+1
When
input
is
on,
the
natural
logarithm
of
the
binary
data
designated
by
source
device
S1
is
stored
to
the
destination
designated
by
device
D1.
LOGE(F)
S1
*****
D1
*****
Since
the
floating
point
data
type
is
used,
the
source
and
destination
devices
use
two
consecutive
data
registers.
I1
S1
D10
LOGE(F)
D1
D20
When
input
I1
is
on,
the
natural
logarithm
of
the
binary
data
of
data
registers
D10
and
D11
designated
by
source
device
S1
is
stored
to
data
registers
D20
and
D21
designated
by
destination
device
D1.
log
e
86
4.454347
D1
S1
86.0
D10
∙
D11
4.454347
D20
∙
D21
SOTU
Summary of Contents for MICROSmart FC5A Series
Page 1: ...FC5A SERIES FC9Y B1273 1 User s Manual Advanced Volume ...
Page 2: ......
Page 8: ...Preface 6 FC5A MicroSmart User s Manual FC9Y B1273 ...
Page 14: ...TABLE OF CONTENTS vi FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 52: ...4 DATA COMPARISON INSTRUCTIONS 4 10 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 72: ...5 Binary Arithmetic Instructions 5 20 FC5A MicroSmart User s Manual FC9Y B1273 ...
Page 88: ...7 SHIFT ROTATE INSTRUCTIONS 7 12 FC5A MicroSmart User s Manual FC9Y B1273 ...
Page 112: ...8 DATA CONVERSION INSTRUCTIONS 8 24 FC5A MicroSmart User s Manual FC9Y B1273 ...
Page 138: ...11 PROGRAM BRANCHING INSTRUCTIONS 11 14 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 178: ...13 PULSE INSTRUCTIONS 13 32 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 202: ...14 PID INSTRUCTION 14 24 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 206: ...15 DUAL TEACHING TIMER INSTRUCTIONS 15 4 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 214: ...16 INTELLIGENT MODULE ACCESS INSTRUCTIONS 16 8 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 248: ...21 COMPUTER LINK COMMUNICATION 21 4 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 272: ...23 MODBUS TCP COMMUNICATION 23 10 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 332: ...25 EXPANSION RS232C RS485 COMMUNICATION 25 16 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...
Page 341: ...NOTE FC5A MICROSMART USER S MANUAL FC9Y B1273 1 ...
Page 342: ...NOTE 2 FC5A MICROSMART USER S MANUAL FC9Y B1273 ...