Festo CPX-AB Series Electronic Manual page 170

5. Analogue output module CPX−2AA−U−I
1
Lower limit of rated
range
2
Digital output value
(example)
3
Upper limit of rated
range
4
Digital output values
5
Assigned analogue
signals
6
Output voltage or
current
Fig. 5/3: Example of default data format VZ + 12 bits right−justified"
Digital data preparation
Output data
Output value > 4095
Output value 4095
Output value 1...4094
Output value 0
Output value < 0
Tab. 5/7: Output signals of the analogue output modules with default settings
5−14
The following diagram shows the processing of the output
words with the default data format VZ + 12 bits right−justi
fied".
1
4
0
5
0 V
0 mA
4 mA
The assignment of the digital value range and the analogue
output signal ranges is shown in the table below.
Output values
Rated range exceeded
Linear value range g
Value less than rated range
2 3
2389 4095
5.833 V
11.66 mA
9.33 mA
6
Analogue output signal range
0 ... 10 V 0 ... 20 mA
Output of last valid value
9.9975 V 19.995 mA
... ...
0 V 0 mA
Output of last valid value
Festo P.BE−CPX−AX−EN en 0503b
10 V
20 mA
20 mA
4 ... 20 mA
19.995 mA
...
4 mA