User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
196 Manual, 04/2011, A5E03556174-01
Timing diagram
The following illustration is an example of the timing diagram where Ta refers to the current
time of the LOGO! Base Module:
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Functional description
The function calculates the TR and TS values at the input and sets Q when Ta (Ta is the
current LOGO! Time) is between TR and TS; otherwise, the function resets Q.
If automatic summertime/wintertime conversion (see the topic Summertime/wintertime
conv
ersion (Page 111) for details) is enabled, the function takes the configured time
differenc
e into consideration when calculating the TR and TS values.
Setting the Par parameter
View in programming mode (example):
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