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20.3.28
Logarithm details
20.3.28.1
Behaviour
The module calculates the logarithm base 10 of the input value and outputs the result on the
Output 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 0
.
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).
20.3.28.2
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.
20.3.28.3
Conversion table
Boolean
(converted)
Number
(converted)
DPTTime
(converted)
DPTDate
(converted)
String
(converted)
Boolean ---
true
false
→
→
1
0
every va-
lue
--
-
Current
time
Current
date
true
false
→
→
"1"
"0"
Number
0
≠
0
→
→
true
false
---
every va-
lue
(as millise-
cond
since
1.1.1970)
→
Time of
day, if
possible;
otherwise
00:00
Hours
Date, if
possible;
otherwise
1.1.1970
Text analo-
gue
to number
DPTTime true
Milliseconds
since
1.1.1970
--- 1.1.1970
Text analo-
gue
to time of
day
DPTDate true
Number
12:00:00 AM
---
Text analo-
Summary of Contents for Busch-ComfortTouch
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Page 16: ...16 240 ...
Page 147: ...147 240 03_03_09_00_EN html Logikbausteine ...
Page 155: ...155 240 03_03_09_00_EN html Logikbausteine 03_03_09_00_EN html Boolean ...
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