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LOGO! functions
4.4 Special functions list - SF
Status diagram
Par
*
*
*
*
*
*
RS
RS
SR
SR
*
*
*
*
*
*
RS
RS
SR
SR
*: RS or SR
**: Triggering signal is effective, because S and R = 0.
Depending on your configuration, either input R takes priority over input S (input S is not
effective when R = 1), or vice versa (input R is not effective when S = 1).
After a power failure, the pulse relay and output Q are reset if you have not enabled
retentivity.
View in programming mode:
This special function is not available in parameter assignment mode.
Note
If Trg = 0 and Par = RS, the special function "Pulse relay" corresponds with the special
function "Latching relay (Page 228)".
230
Q
S
n-1
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
R
Trg
0
0
0
0 ->1
1
0
1
0 ->1
0
0
0
0 ->1
1
0
1
0 ->1
1
0
1
0 ->1
0
0
0
0 ->1
1
0
1
0 ->1
0
0
0
0 ->1
1
0
1
0 ->1
1
0
1
0 ->1
Manual, 04/2011, A5E03556174-01
Q
n
0
1**
0
0
1
1
0
0
1
1
1
0**
0
0
1
1
0
0
1
1
LOGO!
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