Siemens Logo! Manual page 209

Par
SR
SR
*: RS or SR
**: Triggering signal is effective, because S and R = 0.
Depending on your configuration, either input R takes prior-
ity over input S (i.e. input S is not effective when R = 1), or
vice versa (i.e. 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:
B29
Par=RS
This special function is not available in parameter assign-
ment mode.
Note
If Trg = 0 and Par = RS, the special function "Pulse relay"
corresponds with the special function "Latching relay" (see
Chapter 4.4.21).
LOGO! Manual
A5E00380835-01
Q S
n–1
1 1
1 1
R
Press
B or Y
LOGO! functions
R Trg
1 0
1 0 –>1
B29
Par=SR
Q
n
1
1
R
201