138 Rockwell Automation Publication 1756-UM001M-EN-P - February 2012
Chapter 8 I/O Modules
Distributed I/O
Distributed I/O refers to I/O that is located remote from the controller and is
not designed for use with a specific controller. Examples of distributed I/O that
can be used with Logix5000 controllers include the following:
• 1794 FLEX I/O modules
• 1734 POINT I/O modules
• 1797 FLEX Ex™ I/O modules
• 1738 ArmorPOINT® I/O modules
• 1732 ArmorBlock® I/O modules
• 1753 GuardPLC™ Safety I/O modules
• 1790 CompactBlock™ LDX I/O modules
• 1791 CompactBlock Guard Safety I/O modules
• 1791 CompactBlock I/O modules
• 1732DS ArmorBlock Guard Safety I/O modules
• 1792 ArmorBlock® MaXum™ I/O modules
Distributed I/O is connected to the ControlLogix controller via a
communication network. The ControlLogix controller supports the use of
distributed I/O via these networks:
• EtherNet/IP
• ControlNet
• DeviceNet
Figure 19 - ControlLogix System with Distributed I/O Example
FORCE
RUN
SD
OKFORCE
Logix5575
EtherNet/IP™
REDUNDANT MEDIA
ADAPTER
1794-ACNR15
B A
COMM STATUS
ControlLogix Controller Chassis
FLEX I/O
ControlNet
POINT I/O
EtherNet/IP
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