Siemens SINAMICS G120 Operating Instructions Manual page 267

No.
2
2
2
2
2
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
Type Example
SUB SUB 1
P2873
Index 0
Index 1
MUL MUL 1
P2877
Index 0
Index 1
DIV DIV 1
P2881
Index 0
Index 1
CMP CMP 1
P2885
Index 0
Index 1
FFB setpoints Connector Setting in %
P2889
(connector
P2890
settings)
Range : -200% ... 200%
P2800 P2802[6]
x1 200%
Result
r2874
x2
-200 %
x1 + x2
Result = x1 - x2
If: x1 - x2 > 200% →
x1 - x2 < -200% →
P2800 P2802[8]
200%
x1
Result
r2878
x2
-200 %
1 x ∗
x 2
x1∗ x2
Result =
100 %
100%
∗
1 x 2 x
> 200% →
If:
100 %
∗
1 x 2 x
< -200% →
100 %
P2800 P2802[10]
200%
x1
Result
r2882
x2
-200 %
x ∗
1 100 %
x1∗ 100%
X 2 Result =
x2
∗
x1 100%
> 200% →
If:
x2
∗
x1 100%
< -200% →
x2
P2800 P2802[12]
x1
Out
r2886
CMP
x2
Out = x1 ≥ x2
x1 ≥ x2 → Out = 1
x1 < x2 → Out = 0
8.14 Free function blocks
Result = 200%
Result = -200%
Result = 200%
Result = -200%
Result = 200%
Result = -200%
Functions
8-71