Festo CPX Series Manual page 132

4. Analogue input module CPX-4AE-I
Data format "VZ + 12 bits right-justified" (compatible with valve terminal type 03)
D15 D14 D13 D12 D11 D10 D9
VZ 0 0 0
Abbreviations used:
VZ: Sign (with data format "VZ + 12 bits right-justified" always = 0, i.e. a positive value)
B0 ... B11: Input value
D0 ... D15: 16 bits input data field
MSB/LSB: Most significant bit / least significant bit
Tab. 4/6: Data format "VZ + 12 bits right-justified"
4-12
Reaction with the default settings
The module parameter "Input analogue-value data format"
possesses the default setting "VZ + 12 bits right-justified"
(compatible with valve terminal type 03). With this setting the
analogue values will be saved in the input word as follows:
D8
B11 B10 B9 B8
MSB
The channel-specific parameters "Lower limit" and "Upper
limit" possess the following default settings:
– Lower limit = 0
– Upper limit = 4095
These correspond to the scaling end values (data range) of
the default data format.
D7 D6 D5 D4
B7 B6 B5 B4
D3 D2 D1 D0
B3 B2 B1 B0
LSB
Festo P.BE-CPX-AX-EN en 1107f