Scaling Of The Value Range With Limit Values; Examples For Scaling Of The Value Range - Festo CPX Series Manual

3. Analogue input module CPX-4AE-U-I

3.4.6 Scaling of the value range with limit values

3.4.7 Examples for scaling of the value range

3-28
The channel-specific "ower limit value"l and "upper limit
value" parameters can be used to define the scaling of your
value range.
The distance between the lower and upper limit value should
be at least 100 in order to ensure correct diagnostic pro-
dec
cessing.
1. Set the data format module parameter: "linear scaled"
(see Tab. 3/9).
2. Set the lower and upper limit value to the desired scaling
end values (see Tab. 3/15).
3. If desired, you can use the parameterisation "Monitoring
channel x" to generate a diagnostic message if the input
data lies outside the scaled value range (see Tab. 3/11).
Example 1: Scaling suitable for a pressure sensor
The following diagram shows an example of the data format
"linear scaled" with the scaling end values:
– lower limit = 0
– upper limit = 6000
The example shows a sensor which converts the range of the
physical measuring variables from 0 ... 6 bar linear into the
analogue signals 0 ... 10 V or 0 ... 20 mA.
Festo P.BE-CPX-AX-EN en 1107f