
The Function Block LOG calculates the decimal logarithm of a number, i.e., the logarithm with base 10.
At the input, a value is expected to be a number. The value tries to convert a string into a number. The boolean value TRUE is converted into a 1.
Note: See also the article String Conversion to Numbers, if you are working with strings.
The output returns the decimal logarithm of the input as a number.