Siemens SIPART DR21

3 Functional description of the structure switches
3.7 Analog output signal processing (S56)
Manual
110
SIPART DR21
C73000-B7476-C143-08
3.7 Analog output signal processing (S56)
The controller-internal variables are assigned to the analog output AO/Iy by structure switch
S56, whereby every controller variable can be structured to 0 or 4 to 20 mA.
The bipolar process variable xd is output with an offset of 50 % (10 mA or 12 mA).
Analog output Iy assignment and current range
0
S56 =
1
8
9
0 ... 20
0 ... 20
4 ... 20
4 ... 20
U
I
D
A
10 AO/ly
+
xd
50 %
1
+
0 ... 20
4 ... 20
--
y1
100 %
1
+
2
3
0 ... 20
4 ... 20
4
5
0 ... 20
4 ... 20
6
7
0 ... 20
4 ... 20
10
11
0 ... 20
4 ... 20
12
13
0 ... 20
4 ... 20
y2
y1
y
w
x
x1
14
15
0 ... 20
4 ... 20
--
y2
100 %
1
+
16
17
as of software version -B2
Figure 3-29