Festo CPX Series Manual page 243

7. Pressure sensor module CPX-4AE-P
Module parameter: unit for pressure specifications,
differential pressure calculation and sensor limit
diagnostics settings
Function no. 4828 + m * 64 + 6
Description Sets:
– Unit for pressure specifications
– Whether and between which channels a differential pressure calculation is
performed and displayed
– Sensor limit diagnostics
Bit Bits 0, 1:
Bits 2, 3:
Bits 4 ... 7: Sensor limit diagnostics setting
Values Bit 7 6 5 4 3 2 1 0 Unit setting:
Note When changing the unit for pressure specifications, the parameters for the limit
values and hysteresis are not automatically converted. When changing the unit,
you must therefore also change the parameters for the upper/lower limit values
and the hysteresis.
1)
Process value for field bus; the pressure is shown in bar on the display
Tab. 7/4: Parameterising the unit for pressure specifications, differential pressure
calculation and sensor limit diagnostics settings
Festo P.BE-CPX-AX-EN en 1107f
m = module number (0 ... 47)
Unit for pressure specifications
Differential pressure calculation setting
x x x x x x 0 0 mbar (default)
x x x x x x 0 1 kPa
x x x x x x 1 0 psi
x x x x x x 1 1 VZ + 15 Bit
x x x x 0 0 x x no differential pressure calculation (default)
x x x x 0 1 x x Differential pressure display P0 – P1 on channel 0
x x x x 1 0 x x Differential pressure display P2 – P3 on channel 2
x x x 1 x x x x Sensor limit diag. active for channel 0 (default)
x x 1 x x x x x Sensor limit diag. active for channel 1 (default)
x 1 x x x x x x Sensor limit diag. active for channel 2 (default)
1 x x x x x x x Sensor limit diag. active for channel 3 (default)
1)
1)
Differential pressure calculation setting:
Sensor limit diagnostics setting:
0 = inactive
Handheld
[Dimension unit]
[Pressure difference calc.]
[Monitor sensor limit]
Resolution:
1 mbar/bit
1 kPa/bit
0.1 psi/bit
7-11