Chapter 3: Configuring the 2085sc-IF16 Using CCW
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User’s Manual Pub. 0300306-02 Rev. B
Alarm status bit from the input table has been cleared (0). After that you are able
to reset (0) the Latch Clear bit. The module does not latch an alarm condition if
there is an alarm transition from no alarm to alarm while the channel’s Latch
Clear bit is set.
Section 3.6
Product Features
The following sections provide information on user-configurable parameters.
3.6.1
Channel Enable or Disable Description
Specify whether to enable use of each selected channel. Each channel is
Enabled
by default (checkmark selected).
3.6.2
Input ADC Filter Frequencies
The Input ADC Filter configuration parameter allows you to select a filter setting
that attenuates the input signal beginning at the specified frequency. The actual
filtering is performed in hardware (internal to ADC).
The filter for each channel is programmable, allowing you to select from four
different filter frequencies:
Index
Filter (Hz) Note
0
17
Default
1
4
2
62
3
470
The software uses the following channel scan times. The scan time is based on
each channel's Input ADC Filter configuration, and is the sum of the multiplexer
settling time, PGA register setup time, ADC conversion period (which is
[2/filter] + 1 ms), and microcontroller processing overhead.
The module contains two ADC filters and scans two sets of 8 channels in
parallel.
Below is the approximate timing for each input filter selection:
ADC Filter
Selection
Total Channel Scan Rate
Measurement per Channel
16.7 Hz
138 ms
4.17 Hz
498 ms
62 Hz
50 ms
470 Hz
22 ms
The module scan rate can be determined by adding up the scan time of each
individual channel connected to a particular ADC. The module contains two
ADCs, and scans two sets of 8 channels in parallel. The channels are scanned
sequentially on each ADC as follows:
ADC 0: Ch0, Ch1, Ch2, Ch3, Ch8, Ch9, Ch10, Ch11
ADC 1: Ch4, Ch5, Ch6, Ch7, CH12, Ch13, Ch14, Ch15
The scan time of each channel is based on the channel's Input ADC Filter
Summary of Contents for Micro800 2085sc-IF16C
Page 1: ...User s Manual Pub 0300306 02 Rev B...
Page 8: ...vi Micro800TM 16 Channel Analog Input Module User s Manual Pub 0300306 02 Rev B...
Page 18: ...1 10 Chapter 1 Module Overview User s Manual Pub 0300306 02 Rev B...
Page 54: ...3 28 Chapter 3 Configuring the 2085sc IF16 Using CCW User s Manual Pub 0300306 02 Rev B...