The logarithm function code takes the logarithm of the input to the defined base. The result is multiplied by a gain factor to provide the output. The logarithm function code is not limited to natural logarithms. The log of any value in base zero (natural) to ten can be taken.
Use the logarithm function code in process control for performance calculations and monitoring.
Outputs:

Specifications:
Spec 
Tune 
Default 
Type 
Range 
Description 
S1 
N 
6 
I 
Note 1 
Block address of input value X 
S2 
N 
0 
I 
0  10 
Base of logarithm: 0 = natural log 
S2 
Y 
1.000 
R 
Full 
Gain factor 
NOTES:
1. Maximum values are:9,998 for the BRC100, IMMFP11/12 and 31,998 for the HAC