Specifications

20 I/O Module Choices
1785-SO036C-EN-P - April 2002
A Choice of I/O to Meet Your Exact
Requirements
Rockwell Automation offers many types of I/O modules and has
more than 3 million modules installed in applications worldwide.
Rockwell Automation offers both rack-based and block-based
modules.
The following sections outline the available I/O modules. For more
information about these I/O modules, see the I/O Product System
Overview, publication CIG-SO001D.
I/O Module Choices
What to consider:
• type of information to send/receive
• application requirements
• electrical requirements
If your application requires preferred I/O for PLC-5, and: Use this type of I/O: On any of these networks:
native I/O providing highest performance
is chassis-based and needs to accommodate a wide range of I/O types
controls an entire process
is a master/slave configuration for distributed control
1771 I/O
see page 23
ControlNet, Universal Remote
I/O, Extended Local I/O
If your application: Use this type of I/O: On any of these networks:
is chassis-based and requires different types of I/O
has smaller size requirements than 1771
communicates with SLC controllers
1746 I/O
see page 24
ControlNet, Universal Remote
I/O, Extended Local I/O
requires an exact mix of I/O with flexibility and granularity
requires lower installation and maintenance costs
1734 POINT I/O
see page 25
DeviceNet, PROFIBUS
has distributed control that requires multiple types of I/O devices near a
machine
requires low-cost, low I/O point count with modular space-saving design
1793 FLEX Integra
TM
see page 26
Ethernet, ControlNet,
DeviceNet, Universal Remote
I/O, Extended Local I/O,
PROFIBUS
has distributed control that requires multiple types of I/O devices near
a machine
1794 FLEX I/O
see page 26
Ethernet, ControlNet,
DeviceNet, Universal Remote
I/O, Extended Local I/O,
PROFIBUS
has distributed control in a hazardous area
1797 FLEX Ex
TM
I/O
see page 27
ControlNet via bus isolator,
DeviceNet, Universal Remote
I/O
has distributed control that requires multiple types of I/O devices in
harsh environments
1798 FLEX Armor
TM
see page 29
DeviceNet, PROFIBUS