Specifications

Publication 1794-SG002D-EN-P - May 2012

About the FLEX I/O and FLEX Ex I/O Systems 5

Specify a FLEX I/O or

FLEX I/O XT System

Follow these steps as you specify your FLEX I/O or FLEX I/O XT system:

✓ Step See Page

1 Select a communication adapter

Choose the network for your operating system. CIP Network Infrastructure

Select a Network

2 Select I/O modules based on field device

• location of the device

• your application

• number of points needed

• number of points available per module

• number of modules

Or use the Integrated Architecture Builder tool at

http://www.rockwellautomation.com/en/e-tools/confi

guration.html

Digital I/O Modules

FLEX I/O Analog, Thermocouple and

RTD Modules

FLEX I/O Counter Modules

3 Select a terminal base

Choose an appropriate terminal base for your modules. General Specification Comparison 65

4 Choose appropriate power supplies

• Choose appropriate power supply

• Ensure sufficient power for the communication

adapter and modules

Power Supply Definitions

Power Requirements and Transformer

Sizing

5 Determine mounting requirements and select

accessories

• Determine whether to panel mount or DIN rail

mount the FLEX I/O system and at what

orientation (horizontal or vertical)

• Choose appropriate optional accessories to

enhance your system

panel mount or DIN rail mount

1794-CE1 and 1794-CE3 Extender

Cables

1794-NM1 FLEX I/O Mounting Kit

1492-EA35 DIN Rail Locks

1794-LBL FLEX I/O Label Kit

113

115

116