Rockwell Automation 1771-ASB/E Remote I/O Adapter User Manual - Manual (Page 54)

3–24 Addressing Modes for Your Remote I/O
Publication 1771-UM001A-US-P - February 2000
Not all chassis combinations are acceptable in making I/O rack
number assignments. For example, a 1771-A4B I/O chassis cannot
complete an assigned I/O rack number that starts in a 1771-A1 I/O
chassis. Refer to Figure 3.B for acceptable beginning I/O group
numbers when making your I/O rack number assignments.
Table 3.B
Acceptable Beginning I/O Group Numbers
If you select: and:
The beginning I/O group number
can be:
2Ćslot addressing 4Ćslot chassis 0, 2, 4, 6
8Ćslot chassis 0, 2, 4
12Ćslot chassis 0, 2
16Ćslot chassis 0
1Ćslot addressing 4Ćslot chassis 0, 2, 4, 6
8Ćslot chassis 0, 2, 4, 6
12Ćslot chassis 0, 2, 4,
16Ćslot chassis 0
1/2Ćslot addressing 4Ćslot chassis 0
8Ćslot chassis 0
12Ćslot chassis 0
16Ćslot chassis 0
Acceptable Chassis
Combinations