Specifications

Publication 1794-SG002D-EN-P - May 2012
2 About the FLEX I/O and FLEX Ex I/O Systems
Terminal bases can be exchanged without moving other bases in your system.
If desired, connect individual power supplies to each base to isolate modules. Plug
the I/O module into the terminal base to connect the I/O bus and field devices.
Remove and insert modules under power. No direct wiring to the module enables
you to change modules without disturbing field wiring or system power.
Mix and match I/O modules. There is a wide variety of digital, analog, and
specialty modules.
Each FLEX I/O system contains at least one adapter, one terminal base, and one
I/O module.
You can power the system with a FLEX power supply (1794-PS13 or -PS3), a
1606 switched mode power supply, or any other compatible power source. Use
the terminal block on the terminal base to wire your field devices directly. Wiring
directly saves you:
• installation and testing time
• multiple, long wiring runs and external terminal blocks
• control cabinet panel space
FLEX I/O provides additional savings if system problems develop. Combining
your field-wiring terminations and the I/O interface into the same location saves
you time and money by making your system easier to maintain and troubleshoot.
Additionally, the full-featured FLEX I/O system lets you, in non-hazardous
location, remove and insert modules under backplane power without disrupting
your system.
Your FLEX I/O system can communicate on EtherNet/IP, ControlNet,
DeviceNet, and many other open networks including, but not limited, to
Remote I/O and PROFIBUS DP.
Adapters and other components are available for adding to your system as your
specific application requirements change.