Festo CPX Series Manual page 109

3. Analogue input module CPX-4AE-U-I
1
Lower limit of the
nominal range
2
Measured value
(example)
3
Upper limit of the
nominal range
4
Physical measuring
variables
5
Assigned analogue
signal
6
Digital value range
after A-D conversion
7
Digital input value
(example)
Fig. 3/3: Example data format "VZ + 15 Bit" for a pressure sensor with 0 ... 6 bar and
signal ranges 0 ... 10 V, 0 ... 20 mA and 4 ... 20 mA
Festo P.BE-CPX-AX-EN en 1107f
Fig. 3/3 shows the processing of the analogue input signals
with the data format "VZ + 15 Bit" (i.e. without scaling). An
example is a sensor which converts the range of the physical
measuring variables from 0 ... 6 bar linear into the analogue
signals 0 ... 10 V, 0 ... 20 mA or 4 ... 20 mA.
1
4
0
5
0 V
0 mA
4 mA
6
0
7
2
3.5 bar
5.833 V
11.66 mA
9.33 mA
16128 27648
3
6 bar
10 V
20 mA
20 mA
3-27