Chapter 6 Instruction Details
XBC E-Type Main Unit
6-268
Ver. 1
6.35.11 LOG, LOGP
Instruction
Area Available
Step
Flag
P M K
F
L
T
C
S
Z D.x R.x
Con
st
U
N
D
R
Error
(F110)
Zero
(F111)
Carry
(F112)
LOG(P)
S
O O O
-
O O O
-
-
-
-
O O O O O
2~4
O
-
-
D
O O O
-
O
-
-
-
-
-
-
-
O O O O
Operand
Description
Data Size
S
Input value to perform
coommon logarithm operation
LREAL
D
Device number to save operation result in
LREAL
[Flag Setting]
Flag
Description
Device
Number
Error
To be set if value in specified area S is negative
F110
1) LOG (Common logarithm)
(1) Performs Common logarithm operation of data in specified area S to save in D. Data type of S and D is
of double real.
(2) If S is negative, operation error occurs.
(3) When S is over 2.0, operation result is 0.3010... (Log10 (2.0))
2) Program Example
P00001
LOG M0000 M0004
Performs common logarithm operation of data in M0000, M0001 and saves them in M0004, M0005.
LOG
LNP
S
D
LOGP
LN
S
D
Summary of Contents for XBC-DN10E
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