Output data file – Rockwell Automation 1769-XXXX Compact I/O Modules User Manual
Page 143
Rockwell Automation Publication 1769-IN088A-EN-P - February 2011
143
I/O Memory Mapping Chapter 3
The bits are defined as follows:
• PF = Analog power fail.
• S = General status (over-range, under-range, or open-circuit).
• D = Open-circuit diagnostics.
• H = Output held bit.
• U = Under-range (or low-clamp exceeded) alarm.
• O = Over-range (or high-clamp exceeded) alarm.
Output Data File
For each module, slot
x, words 0…7 in the output data file contain the channel
0…7 output data. Word 8 is used to unlatch any condition that has been latched.
Refer to the Compact Analog I/O User Manual, publication number
or additional details.
4
Channel 1 Data Value
5
Channel 2 Data Value
6
Channel 3 Data Value
7
Channel 4 Data Value
8
Channel 5 Data Value
9
Channel 6 Data Value
10
Channel 7 Data Value
IMPORTANT
The output module’s input data file reflects the analog output data echo
of the module, not necessarily the electrical state of the output
terminals. It does not reflect shorted or open outputs.
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 UO7 UU6 UO6 UU5 UO5 UU4 UO4 UU3 UO3 UU2 UO2 UU1 UO1 UU0 UO0
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0