Log - Allen-Bradley Micro800 General Instructions Manual

Chapter 5
Arithmetic instructions

LOG

84
LOG yields the logarithm (base 10) of a Real value.
Arguments
Parameter Parameter
Type
EN Input
IN Input
LOG Output
ENO Output
LOG function language examples
Function block diagram
Ladder diagram
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
Data Type Description
BOOL Function enable.
When EN = TRUE, execute current logarithm computation.
When EN = FALSE, there is no computation.
REAL Must be greater than zero.
REAL Logarithm (base 10) of the input value. The returned result is -3.4E+38
for a zero IN value and negative IN value.
BOOL Enable out.