Preliminary User Manual UMAX023241 - Version: 1.1 10-63
Table 3: Object 2100h - AI Input Range Options Depending on Sensor Type
Value Frequency
PWM
Digital
Quad.Dec
0
0.5Hz to 50Hz
Low Freq
(<1kHz)
Normal Edge
count
1
10Hz to 1kHz
High Freq
(>100Hz)
Inverse Direction
2
100Hz to 10kHz
Latched
Speed
Digital
Input Sensor Types
offers three modes: Normal, Inverse, and Latched. The measurements
taken with digital input types are 1 (ON) or 0 (OFF).
When a quadrature Encoder unit is read using the AX023241 controller, both digital inputs should
be connected to read the signals generated by the quadrature Encoder unit. Both inputs need to be
configured as one of the Quadrature Encoder input types, Step Count (2100h – ‘0’), Direction (2100h
– ‘1’) or Speed (2100h – ‘2’), measured as RPM).
Figure 4: Digital Input objects
1.2.2.
Pullup / Pulldown Resistor Options
In all
Input Sensor Types:
Digital and Quadrature Encoder types, the user has the option of three
(3) different pull up/pull down options as listed in
Table 4
.
Table 4: Pullup/Pulldown Resistor Options
0
Pullup/Pulldown Off
1
1k
Ω
Pullup
2
10k
Ω
Pulldown
In order to create ‘Active High’/’Active Low’ configurations – a proper combination of Digital Input
modes:
Normal, Inverse, Latched
and
Pullup/Pulldown Resistor
:
1k
Ω
Pullup, 10k
Ω
Pulldown
needs selected. For example, when using a ‘floating’ input, in order to create an ‘Active Low’
configuration use
Pullup/Pulldown Resistor:
1k
Ω
Pullup a
nd
Input Sensor Type
: Digital (Inverse)
.
The pullup resistor will create a 1 (ON) value when the input is floating. Since it is placed in
Digital
(Inverse),
this value will be considered as OFF. Once the input is grounded this will create a 0 (OFF)
but since the input is
Digital (Inverse)
this be considered as ON.
1.2.3.
Input Software Filter Types
All input types can be filtered using
Filter Type
and
Filter Constant
objects 61A0h and 61A1h.
There are three (3) filter types available as listed in
Table 5
.
