X8 Instruction Set Reference Manual
10-14
Math Instructions
LN - Natural Log
Instruction Type: output
Use the LN instruction to take the natural log of the value in the source and
store the result in the destination.
LOG- Base 10 Logarithm
Instruction Type: output
Use the LOG instruction to take the log base 10 of the value in the source and
store the result in the destination. The source must be greater than zero.
LN
EN
ENO
IN
N4:0 -
166 <
OUT - N4:1
> 0
Parameter
Data Table
SFR
Address Mode
Address
Level
Y
X
SR
B
TM, CT
, CR
N
F
ST
A
L
MG,
PD
RP
PS
RTC
HSC
PTO
, PWM
STI
EII
BHI
MM
I
CS
-Comms
DLS-DataLog
Imm
edi
ate
Direct
Indirect
Imme
dia
te Float
Imme
dia
te Imt32
Imme
dia
te Imt16
Bi
t
Wo
rd
LongW
ord
Element
Float
Source
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Destination
√
√
√
√
√
√
√
√
√
√
√
√
√
LOG
EN
ENO
IN
N4:0 -
166 <
OUT - N4:1
> 0
Parameter
Data Table
SFR
Address Mode
Address
Level
Y
X
SR
B
TM
, C
T, C
R
N
F
ST
A
L
MG,
PD
RP
PS
RTC
HSC
PTO, PWM
STI
EII
BHI
MM
I
CS
-Comms
DLS-DataLog
Imme
diat
e
Direct
Indirect
Imme
diat
e Float
Imme
diat
e Imt32
Imme
diat
e Imt16
Bi
t
Wo
rd
LongW
ord
Element
Fl
oa
t
Source
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
√
Output
√
√
√
√
√
√
√
√
√
√
√
√
√
Summary of Contents for X8 Series
Page 1: ...Catalog Number s X8 M14DDT X8 M16DDR X8 M32DDT X8 Instruction Manual Reference Manual ...
Page 16: ......
Page 64: ...X8 Instruction Set Reference Manual 2 12 X8 Series PLC Memory and Data Table ...
Page 166: ...X8 Instruction Set Reference Manual 7 8 Relay Type Bit Instructions ...
Page 180: ...X8 Instruction Set Reference Manual 8 14 Timer and Counter Instructions ...
Page 205: ...X8 Instruction Set Reference Manual Math Instructions 10 17 ...
Page 206: ...X8 Instruction Set Reference Manual 10 18 Math Instructions ...
Page 212: ...X8 Instruction Set Reference Manual 11 6 Converion Instructions ...
Page 218: ...X8 Instruction Set Reference Manual 12 6 Logical Instructions ...
Page 236: ...X8 Instruction Set Reference Manual 15 8 Shift and FIFO LIFO Instructions ...
Page 242: ...X8 Instruction Set Reference Manual 16 6 Sequencing Instructions ...
Page 252: ...X8 Instruction Set Reference Manual 18 4 Input and Output Instructions ...
Page 280: ...X8 Instruction Set Reference Manual 20 12 PID Control ...
Page 296: ...X8 Instruction Set Reference Manual 21 16 ASCII Instructions ...
Page 308: ...X8 Instruction Set Reference Manual 22 12 Communications Instructions ...
Page 312: ...Appendix A 4 System Error Code ...
Page 313: ...Appendix B MSG Instruction Error Code MSG Instruction Error Code ...
Page 322: ...Appendix B 10 MSG Instruction Error Code ...
Page 325: ...ASCII Character Set Appendix C 3 ...
Page 326: ...Publication number X8 RM001A EN September 2012 ...
Page 327: ...Copyright 2012 RS Automation Co Ltd All rights reserved ...