I/o memory mapping, Output data file, Output module’s input data file – Rockwell Automation 1769-OV32T Compact Module User Manual
Page 14
14 Compact 32-point Solid-state 24V dc Sink Output Module
Publication 1769-IN073B-EN-P - September 2005
I/O Memory Mapping
Output Data File
For each module, slot x, words 0-1 in the output data file contain the control program’s
directed state of the discrete output points.
w = write
Output Module’s Input Data File
For each module, slot x, input data file words 0-1 contain the state of the module’s output
data (output data echo) file words 0-1. During normal operation, these input bits represent
the logic state that the outputs are directed to by the control program. They are also
dependent upon the:
• Program Mode configuration (if supported by the controller)
• The Fault Mode configuration (if supported by the controller)
r = read
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
1
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
1
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
IMPORTANT
The output module’s input data file reflects the output data echo of the
module, not necessarily the electrical state of the output terminals. It
does not reflect shorted or open outputs.
It is important to use this input word if the controller adapter supports
the Program Mode or Fault Mode function, and if it is configured to use
them.