Output data file, Configuration data file, Output data file configuration data file – Rockwell Automation 1769-XXXX Compact I/O Modules User Manual
Page 153
Rockwell Automation Publication 1769-IN088A-EN-P - February 2011
153
I/O Memory Mapping Chapter 3
Output Data File
For each module, slot
x, words 0…7 in the output data file contain the channel 0
through channel 7 output data. Word 8 is used to unlatch any alarm condition
that has been latched. Refer to the Compact Analog I/O User Manual,
publication number
1769-UM002
for additional details.
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
. Refer to the Compact
Analog I/O User Manual, publication number
for additional
details.
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
SGN
Analog Output Data Channel 0
1
SGN
Analog Output Data Channel 1
2
SGN
Analog Output Data Channel 2
3
SGN
Analog Output Data Channel 3
4
SGN
Analog Output Data Channel 4
5
SGN
Analog Output Data Channel 5
6
SGN
Analog Output Data Channel 6
7
SGN
Analog Output Data Channel 7
8
UU7
UO
7
UU
6
UO
6
UU
5
UO
5
UU
4
UO
4
UU
3
UO
3
UU
2
UO
2
UU
1
UO
1
UU
0
UO
0
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