34
Festo — CPX-4AE-4AA-H — 2021-06b
Commissioning
1
1
2
3
4
5
6
6
7
6
8
Fig. 17: Error messages at hysteresis
1
Hysteresis
2
Actual value too high: channel error LED
and module error LED light up red
3
Actual value
4
Error message on
5
upper limit
6
Error message off
7
lower limit
8
Actual value too low: channel error LED
and module error LED are red
The hysteresis has the same variable for both critical limits and is located in the middle between the
values.
If a hysteresis is set, the analogue module behaves as follows:
–
If the lower critical limit is undershot by the half hysteresis value, an error message is output.
–
If the lower critical limit is exceeded by the half hysteresis value, the error message is cancelled.
–
If the upper critical limit is exceeded by the half hysteresis value, an error message is output.
–
If the upper critical limit is undershot by the half hysteresis value, the error message is cancelled.
Channel parameter: signal range of channel 0 … 3
Function number
4828 + m* 64 + 30
m = module number (0 … 47)
Description
Setting of the signal range of the inputs and outputs for the individual channels
of the analogue input module
7.5 Data format and range of values of the
Allocation
–
Bit 0 … 1: signal range of channel 0
–
Bit 2 … 3: signal range of channel 1
–
Bit 4 … 5: signal range of channel 2
–
Bit 6 … 7: signal range of channel 3
Values
Tab. 25 Allocation and values of the “Signal range” channel parameter.
Tab. 24: Description of “Signal range of channel 0 … 3"
