Mitsubishi Electric MELSEC iQ-R Series - Calculating the Common Logarithm of Single-Precision Real Number

7 APPLICATION INSTRUCTIONS
7.9 Real Number Instructions
835
7
Calculating the common logarithm of single-precision real
number
LOG10(P)
These instructions calculate the logarithm using the common logarithm (using 10 as the base) of the value specified by a
single-precision real number.
■Execution condition
Setting data
■Description, range, data type
■Applicable devices
Ladder ST
ENO:=LOG10(EN,s,d);
ENO:=LOG10P(EN,s,d);
FBD/LD
Instruction Execution condition
LOG10
LOG10P
Operand Description Range Data type Data type (label)
(s) Data used for common logarithm operation, or the start
device containing the data
0, 2
-126
|(s)|<2
128
Single-precision real
number
ANYREAL_32
(d) Start device for storing the operation result  Single-precision real
number
ANYREAL_32
EN Execution condition  Bit BOOL
ENO Execution result  Bit BOOL
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(s)   
(d)         
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant) (Process)
(s) (d)
EN ENO
ds