Owner's manual

Rockwell Automation Publication 1769-UM005B-EN-P - March 2012 31
Installation and Wiring Chapter 3
You can install as many modules as your power supply can support. However,
all 1769 I/O modules have power supply distance rating. The maximum power
supply distance rating is 8, which means that a module may not be located
more than 8 modules away from the system power supply. The illustration
below shows how power supply distance is determined.
1
1123432
2345678
Compact I/O
Compact I/O
Compact I/O
Compact I/O
End Cap
MicroLogix 1500 Controller
with Integrated System
Power Supply
System Power Supply
Compact I/O
Compact I/O
Compact I/O
End Cap
CompactLogix Controller
or I/O Communication
Adapter
Compact I/O
Compact I/O
Compact I/O
OR
Power Supply Distance
Power Supply Distance
Compact I/O
Compact I/O
Compact I/O
Compact I/O