Siemens sinamics G120 Operating Instructions Manual page 313

BSW (binary changeover switch)
I0, I1
I
Q
Runtime group
Run sequence
DFR (D flip-flop)
Table 6- 48
I, D, S, R
Q
QN
Runtime group
Run sequence
Converter with CU250S-2 Control Unit
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
Truth table
D I
0 0
1 ↑
0 ↑
0 0
0 0
0 0
DFR 0
p20198[0 ... 3]
r20199
r20200
p20201
p20202
This function block switches one of two binary input varia-
bles to the output:
When I = 0, then Q = I0.
When I = 1, then Q = I1.
BSW 0
p20208[0, 1]
p20209[0]
r20210
p20211
p20212
D flip-flop, reset dominant.
S R
0 0
0 0
0 0
1 0
0 1
1 1
DFR 1
p20203[0 ... 3]
r20204
r20205
p20206
p20207
Advanced commissioning
6.7 Application-specific functions
BSW 1
p20213[0, 1]
p20214[0]
r20215
p20216
p20217
Q
No change
1
0
1
0
0
DFR 2
p20329[0 ... 3]
r20330
r20331
p20332
p20333
QN
0
1
0
1
1
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