Calculating The Natural Logarithm Of Double-Precision Real Number - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Calculating the natural logarithm of double-precision real number

LOGD(P)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
These instructions calculate the logarithm using the natural logarithm (e) of the value specified by a double-precision real
number as the base.
Ladder
(s) (d)
*1
FBD/LD
EN ENO
s d
*1 The LOGD instruction does not support the ST and FBD/LD. Use the standard function, LOG.
Page 1897 LOG(_E)
■Execution condition
Instruction
LOGD
LOGDP
Setting data
■Description, range, data type
Operand Description
(s) Data used for natural logarithm operation, or the start
device containing the data
(d) Start device for storing the operation result
EN Execution condition
ENO Execution result
■Applicable devices
Operand Bit
X, Y, M, L, J\
SM, F, B, SB,
FX, FY
(s)  
 
(d)
RnSFCPU RnSFCPU
(Standard) (Safety)
Execution condition
Word
T, ST, C, D, W, U\G, J\,
SD, SW, FD, R, U3E\(H)G
ZR, RD
 
 
*1
ST
ENO:=LOGDP(EN,s,d);
Range Data type
-1022 1024
|(s)|<2
0, 2 Double-precision real
number
 Double-precision real
number

Bit
 Bit
Double word Indirect
Z LT, LST, LZ
LC
  
  
7 APPLICATION INSTRUCTIONS
Data type (label)
ANYREAL_64
ANYREAL_64
BOOL
BOOL
Constant Others
specification
K, H E $
    
    
7.9 Real Number Instructions
7
825