Rockwell Automation 1771ACN/B_1771ACNR/B,D17716.5.123 U.MNL CONTROLNET ADAPTER - Manual (Page 32)

Addressing Modes for Your I/O 3–8
Publication 1771-6.5.123 – May 1996
When the 1771-ACN/ACNR ControlNet adapter module addresses a
1-slot I/O group containing a 32-point I/O module, the adapter
module uses the unused word assigned to the adjacent I/O module
slot. For example, the adapter module uses the unused input word
associated with I/O slot 1 (because that slot must hold an output
module and does not use its input word).
NO TAG illustrates the concept of 1-slot addressing with two
32-point I/O modules.
Figure 3.7
1-slot I/O Group Concept With 32-point I/O Modules
3 2 –p o in t I/O M o d ules
In pu t W o rd 0
O u tp u t W o rd 0
Im a g e T a b le
W ord s A llo ca te d
fo r I/O G ro u p 0
In pu t W o rd 1
O u tp u t W o rd 1
Im a g e T a b le
W ord s A llo ca te d
fo r I/O G ro u p 1
S lo t 0
Inp u t M o d u le
I/O G ro u p 0
S lo t 1
O u tp u t M o d u le
I/O G rou p 1
14 25 8