Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 528

Function
LOG(468) calculates the natural (base e) logarithm of the 32-bit floating-point number in S+1 and S and
places the result in R+1 and R.
log S+1
e
R+1
The constant e is 2.718282.
The following diagram shows the relationship between the input data and result.
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Source (32-bit floating-point data)
S
Result (32-bit floating-point data)
R
R
S: Input data
R: Result
3. Instructions
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