Siemens SINAMICS G120 Operating Instructions Manual page 232

Advanced commissioning
6.14 Free function blocks
NCM (numeric comparator)
Table 6-33
Comparing inputs
X0 > X1
X0 = X1
X0 < X1
X0, X1
QU
QE
QL
Runtime group
Run sequence
NOT (inverter)
I
Q
Runtime group
Run sequence
NSW (numeric changeover switch)
230
The function block compares two inputs with one another.
Function table
NCM 0
p20312[0, 1]
r20313
r20314
r20315
p20316
p20317
The function block inverts the input:
I = 0 ⇒ Q = 1
I = 1 ⇒ Q = 0
NOT 0 NOT 1
p20078[0] p20082[0]
r20079 r20083
p20080 p20084
p20081 p20085
This function block switches one of two numeric input varia‐
bles to the output:
When I = 0, then Y = X0.
When I = 1, then Y = X1.
QU QE
1 0
0 1
0 0
NOT 2 NOT 3
p20086[0] p20090[0]
r20087 r20091
p20088 p20092
p20089 p20093
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
QL
0
0
1
NCM 1
p203182[0, 1]
r20319
r20320
r20321
p20322
p20323
NOT 4 NOT 5
p20300[0] p20304[0]
r20301 r20305
p20302 p20306
p20303 p20307