Spectrum Controls 140 AUI 040 00sc - Manual (Page 24)

16-Channel Universal Analog Input Module
25
Chapter 4
MODULE CONFIGURATION AND STATUS
The 140 AUI 040 00sc uses a total of nine 3x level and one 4x level registers. After Modsoft (Section 2.3)
or Concept (Section 3.3) software is installed, additional configuration and status registers are set as follows:
4.1 Configuration word format (Register 4x)
1 2 3 4 5 6 7 8 9 1 0 111 2 1 3 1 4 1 5 1 6
Channel 1/2 Disable
Channel 3/4 Disable
Channel 5/6 Disable
Channel 7/8 Disable
Channel 9/10 Disable
Channel 11/12 Disable
Channel 13/14 Disable
Channel 15/16 Disable
Bank Select
Sequence Mode
Data Mode
Calibration Rate
Lead Measurement
4x Lead Resistance Measurement: Bits 1-2
This applies only when the module interfaces 3 wire RTDs. These two bits determine how frequently the
module will measure the RTD lead wire resistance. It is unlikely lead resistance will change much over time.
Reading the lead resistance effectively doubles the update time for RTD measurements
Bit 1 Bit 2 Mode
0 0 Equal to calibration rate
0 1 On power up only
1 0 Every 3-wire RTD reading
1 1 Not Allowed
4x Calibration Mode: Bits 3-4
These two bits are used to select a desired calibration interval.
Bit 3 Bit 4 Mode
0 0 On power up only
0 1 Every Minute
1 0 Every 10 Minutes
1 1 Every 30 Minutes
4x Data Input Mode: Bits 5-6
The module continuously outputs a group of eight registers worth of data. The data for a given group can be
paged between two modes. These are the standard channel input data and channel status data.
Bit 5 Bit 6 Input Modes
0 0 Input Data
0 1 Status Data 1
1 0 Not Used
1 1 Status Data 2