Table of Contents
Advertisement
20.3.29 Natural logarithm details
20.3.29.1 Behaviour
The module calculates the logarithm base e of the input value and outputs the result on the Out-
put 0 .
If an input value ≤ 0 is present on the input, the value 1 (logical "true") is output on the Output 1
. In this case, no value is output on the Output 1.
The internal data type of this module is Number. If necessary, incoming values are converted
into the internal data type before the calculation (see conversion table below).
20.3.29.2 Extended settings
Via the Only send with change parameter, you can specify whether an output value shall only be
sent if the result of the calculation is different to the previously calculated result.
20.3.29.3 Conversion table
Boolean
(converted)
Boolean ---
0
→
Number
≠ 0
→
DPTTime true
DPTDate true
201/240
Number
DPTTime
(converted)
(converted)
true
1
every va-
→
false
0
lue
→
every va-
lue
true
(as millise-
---
false
cond
since
1.1.1970)
Milliseconds
since
---
1.1.1970
Number
12:00:00 AM
DPTDate
(converted)
--
Current
Current
-
time
date
Time of
Date, if
day, if
possible;
possible;
→
otherwise
otherwise
00:00
1.1.1970
Hours
1.1.1970
---
String
(converted)
true
"1"
→
false
"0"
→
Text analo-
gue
to number
Text analo-
gue
to time of
day
Text analo-
Advertisement
Table of Contents
