Rockwell Automation 1769-XXXX Compact I/O Modules - Manual (Page 140)

140 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
141 . Refer to your module user manual for additional details.
Word Description Word Description
0 Channel 0 Configuration Word 0 16 Channel 2 Configuration Word 0
1 Channel 0 Configuration Word 1 17 Channel 2 Configuration Word 1
2 Channel 0 Fault Value Word 18 Channel 2 Fault Value Word
3 Channel 0 Program Idle Mode Word 19 Channel 2 Program Idle Mode Word
4 Channel 0 Low Clamp 20 Channel 2 Low Clamp
5 Channel 0 High Clamp 21 Channel 2 High Clamp
6 Channel 0 Ramp Rate 22 Channel 2 Ramp Rate
7 Channel 0 Spare 23 Channel 2 Spare
8 Channel 1 Configuration Word 0 24 Channel 3 Configuration Word 0
9 Channel 1 Configuration Word 1 25 Channel 3 Configuration Word 1
10 Channel 1 Fault Value Word 26 Channel 3 Fault Value Word
11 Channel 1 Program Idle Mode Word 27 Channel 3 Program Idle Mode Word
12 Channel 1 Low Clamp 28 Channel 3 Low Clamp
13 Channel 1 High Clamp 29 Channel 3 High Clamp
14 Channel 1 Ramp Rate 30 Channel 3 Ramp Rate
15 Channel 1 Spare 31 Channel 3 Spare