Specifications
7 Publication 1794-SG002D-EN-P - May 2012
Section
 1.2
Select FLEX I/O Communication Adapters
Step 1 – Select:
a communication adapter based on the appropriate network
A FLEX I/O adapter module interfaces FLEX I/O modules to an I/O scanner 
port across a communication network. The FLEX I/O adapter module contains 
a built-in power supply that converts 24V DC to 5V DC for the backplane to 
power the FLEX I/O modules.
• Your 1794 FLEX I/O system can communicate on:
•EtherNet/IP
• ControlNet, single media or redundant
• DeviceNet
• Many other open networks including, Remote I/O, PROFIBUS DP, and 
others from Encompass partners
CIP Network Infrastructure
The Common Industrial Protocol (CIP) allows complete integration of control 
with information, multiple CIP networks and standard Internet technologies. 
CIP provides manufacturers with a scalable and coherent architecture 
incorporating discrete, process, safety, synchronization and motion applications 
using the same network technology as the ERP, MES enterprise levels 
applications. Ultimately, network convergence helps align technology with 
business goals for business process transformation and enterprise-wide visibility.
The following networks share the Common Industrial Protocol at their upper 
levels, while remaining media independent at their lower levels. This allows 
manufacturers to specify the best network for their application and eliminate 
costly and complex gateways when connecting dissimilar upper level networks.
• EtherNet/IP is an open industrial networking standard that supports 
implicit and explicit messaging and uses commercial, off-the-shelf 
Ethernet equipment and physical media.
• ControlNet allows intelligent, high-speed control devices to share the 
information required for supervisory control, work-cell coordination, 
operator interface, remote device configuration, programming, and 
troubleshooting.
• DeviceNet offers high-speed access to plant-floor data from a broad range 
of plant floor devices and a significant reduction in wiring.










