Basic Documentation

159/332
Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Aggregates 03.10.2011
10.8.12 Application example RS flip-flop
The following application example shows a solution for an RS flip-flop.
N.X2
Y
SIGNAL Y
x
N.X1
Yx
Q
N.Q1
SIGNAL Y
12 21
xx x x
A
B
3
x
Q
d
C
N.Q2
Q
12 21
xx x x
A
B
3
x
Q
d
C
NOR
NOR
Q
Q
Digital Digital
3123S04en
Set Reset
Logic 1 Logic 2
Required configuration:
Operating line Comments
Logic 1 [Logic A] function NOR
Logic 2 [Logic A] function NOR
Truth table:
Set Reset Q
Q
State
0 0 X X Save
0 1 0 1 Reset
1 0 1 0 Set
1 1 Undef
Note