144 Rockwell Automation Publication 1769-IN088A-EN-P - February 2011
Chapter 3 I/O Memory Mapping
The bits are defined as follows:
• SGN = Sign bit in two’s complement format.
• UU = Unlatch under-range (or low clamp exceeded) alarm.
• UO = Unlatch over-range (or high clamp exceeded) alarm.
Configuration Data File
The manipulation of the bits from this file is normally done with programming
software, such as RSLogix 500, RSLogix 5000, or RSNetWorx for DeviceNet,
during initial configuration of the system. In that case, graphical screens are
provided by the programmer to simplify configuration. However, some systems,
like the 1769-ADN DeviceNet adapter, also allow the bits to be altered as part of
the control program, using communication rungs. In that case, it is necessary to
understand the bit arrangement. The channel configuration words, the first two
words of each eight word group, are described on page 146
. Refer to the Compact
Analog I/O User Manual, publication number 1769-UM002
for additional
details.
Word Description Word Description
0 Channel 0 Configuration Word 0 24 Channel 3 Configuration Word 0
1 Channel 0 Configuration Word 1 25 Channel 3 Configuration Word 1
2 Channel 0 Fault Value Word 26 Channel 3 Fault Value Word
3 Channel 0 Program Idle Mode Word 27 Channel 3 Program Idle Mode Word
4 Channel 0 Low Clamp 28 Channel 3 Low Clamp
5 Channel 0 High Clamp 29 Channel 3 High Clamp
6 Channel 0 Ramp Rate 30 Channel 3 Ramp Rate
7 Channel 0 Spare 31 Channel 3 Spare
8 Channel 1 Configuration Word 0 32 Channel 4 Configuration Word 0
9 Channel 1 Configuration Word 1 33 Channel 4 Configuration Word 1
10 Channel 1 Fault Value Word 34 Channel 4 Fault Value Word
11 Channel 1 Program Idle Mode Word 35 Channel 4 Program Idle Mode Word
12 Channel 1 Low Clamp 36 Channel 4 Low Clamp
13 Channel 1 High Clamp 37 Channel 4 High Clamp
14 Channel 1 Ramp Rate 38 Channel 4 Ramp Rate
15 Channel 1 Spare 39 Channel 4 Spare
16 Channel 2 Configuration Word 0 40 Channel 5 Configuration Word 0
17 Channel 2 Configuration Word 1 41 Channel 5 Configuration Word 1
18 Channel 2 Fault Value Word 42 Channel 5 Fault Value Word
19 Channel 2 Program Idle Mode Word 43 Channel 5 Program Idle Mode Word
20 Channel 2 Low Clamp 44 Channel 5 Low Clamp
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