Siemens LOGO! Series Manual page 254

LOGO! functions
4.4 Special functions list - SF
Timing diagram for AQ
Functional description
If the input En is set, then the function sets the current level to StSp + Offset "B" for 100 ms.
Then, depending on the connection of Sel, the function runs from the level StSp + Offset "B"
to either level 1 or level 2 at the acceleration set in Rate.
If the input St is set, the function runs to a level of StSp + Offset "B" at the acceleration set in
Rate. Then the function holds the level at StSp + Offset "B" for 100 ms. After 100 ms, the
level is set to Offset "B". The scaled value (output AQ) is 0.
If the input St is set, the function can only be restarted after the inputs St and En have been
reset.
If input Sel has been changed, depending on the connection of Sel, the function runs from
the current target level to the new target level at the rate that is specified.
If the input En is reset, the function immediately sets the current level to Offset "B".
The current level is updated every 100 ms. Note the relationship between output AQ and the
current level:
Output AQ = (current level - Offset "B" ) / Gain "A"
Note
For further information on analog value processing, please refer to the online help for
LOGO!Soft Comfort.
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Manual, 04/2011, A5E03556174-01
LOGO!