UMAX130511 Version 1.00A Preliminary Documentation
– May be subject to change
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changed. The grayed cells mean that the associate value is not allowed for the range object when
that sensor type has been selected.
Value
Voltage
Current
Frequency
Resistive
PWM
0
0 to 5V
0 to 20mA
0.5Hz to 50Hz
20 Ω to 250 kΩ
Low Freq (<1kHz)
1
0 to 10V
4 to 20mA
10Hz to 1kHz
High Freq (>100Hz)
2
-5 to 5V
0 to 200mA
100Hz to 10kHz
3
-10 to 10V
Table 5
– AI Input Range Options Depending on Sensor Type
Objects 2020h
DI Pull-up/Pull-down Mode,
2030h
DI Debounce Filter
and 2101h
AI Number of
Pulses per Revolution
are used with frequency and PWM sensor types.
Object 2020h
DI Pull-up/Pull-down Mode
will determine the configuration of the internal Pull-
up/Pull-down resistors. The options for object 2020h are shown in Table 1, with the default bolded.
Object 2030h
DI Debounce Filter
is used to select input capture filter applied to the input before
the state is read by the processor. The options for object 2030h are shown in Table 6, with the
default bolded.
Value Meaning
0
Filter Disabled
1
Filter 111ns
2
Filter 1.78 us
3
Filter 14.22 us
Table 6
– DI Debounce Filter Options
Figure 7
– Digital Input Debouncing
Frequency measurement can be changed to RPM, by setting object 2101h
AI Number of Pulses
per Revolution
to a non-zero value.
All inputs can be further filtered once the raw data has been measured. Object 61A0h
AI Filter
Type
determines what kind of filter is used per Table 7. By default, additional software filtering is
disabled.
Value
Meaning
0
No Filter
1
Moving Average
2
Repeating Average