Rockwell Automation 1771-DCM USER MANUAL 1771-DCM User Manual
Page 14
Selecting Options
Chapter 3
3Ć6
Switch
I/O Rack Number (Octal)
1
2
3
4
5
6
30
ON
OFF
OFF
ON
ON
ON
31
ON
OFF
OFF
ON
ON
OFF
32
ON
OFF
OFF
ON
OFF
ON
33
ON
OFF
OFF
ON
OFF
OFF
34
ON
OFF
OFF
OFF
ON
ON
35
ON
OFF
OFF
OFF
ON
OFF
36
ON
OFF
OFF
OFF
OFF
ON
37
ON
OFF
OFF
OFF
OFF
OFF
Switches 7 and 8 Ć First (Starting) Module Group Number
First Module
Switch
Group Number
7
8
0
ON
ON
2
ON
OFF
4
ON
ON
6
OFF
OFF
Assign a unique stating module group number--such as 0, 2, 4, or 6--in
accordance with the number of chassis you assigned to the same I/O rack
number. You can assign from one to four 1771-DCMs and I/O adapters to
the same I/O rack number, provided that the combination does not exceed
a full rack. For example, assign starting module group numbers to each
I/O chassis or 1771-DCM in the following combinations:
Rack Configuration
Assign Module Group Numbers
•
Four 1/4 Racks
0, 2, 4, and 6
•
Two 1/2 Racks
0 and 4
•
One 1/4 and One 3/4 Rack
0 and 2
•
One 3/4 and One 1/4 Rack
0 and 6
You selected the equivalent rack size of your 1771-DCM with Switch
Bank 0, Switches 7 and 8, above.