User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
Manual, 06/2014, A5E33039675
199
Par
Q
n-1
S
R
Trg
Q
n
*
0
1
0
0
1
*
0
1
0
0 ->1
1
RS
0
1
1
0
0
RS
0
1
1
0 ->1
0
SR
0
1
1
0
1
SR
0
1
1
0 ->1
1
*
1
0
0
0
1
*
1
0
0
0 ->1
0**
*
1
0
1
0
0
*
1
0
1
0 ->1
0
*
1
1
0
0
1
*
1
1
0
0 ->1
1
RS
1
1
1
0
0
RS
1
1
1
0 ->1
0
SR
1
1
1
0
1
SR
1
1
1
0 ->1
1
*: 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 an
d Par = RS, the special function "Pulse relay" corresponds with the special
function "
Latching relay (Page 197)".