FLEX I/O Modules

Our Bulletin 1794 FLEX™ I/O modules offer flexibility for your application with digital, analog, HART analog, and specialty I/O, with 4…32 points per module. You can mix and match digital and analog I/O with mounting and wiring options.

Popular Resources/Quicklinks
FLEX I/O and FLEX I/O XT Product Profile FLEX I/O and FLEX Ex I/O Selection Guide


  • Digital and analog modules plus a breadth of specialty modules support a wide variety of applications
  • Removal and Insertion Under Power (RIUP) lets you replace modules and make cable connections while the system is in operation
  • FLEX I/O-XT™ extreme environment modules are rated for -20...70 °C (-4...158 °F) and are compatible with the ControlLogix-XT™ extreme environment system
  • Conformal coated modules are available
  • Each I/O module requires a terminal base for connection points for I/O wiring

1794 FLEX™ I/O Digital Modules

  • Cover a wide electrical range
  • Densities range from 8...32 points
  • Isolated inputs or outputs, protected outputs, electronic fusing, or diagnostics available on some modules

1794 FLEX I/O Analog Modules

  • Individually configurable channels
  • Selectable input filters on many modules
  • Single-ended or differential inputs
  • On-board scaling
  • Internal calibration
  • Thermocouple, RTD, and HART (Highway Addressable Remote Transmitter) modules available

1794 FLEX I/O Specialty Modules

  • Frequency modules
  • Very High Speed counter module
  • Pulse counter modules

Additional Information

Our PartnerNetwork™ offers complementary product solutions for 1794 Flex I/O modules through the Encompass Product Reference program. You can sort and filter products from best-in-industry suppliers in your region to connect to the Rockwell Automation® architecture, or to use with our products.

Product Selection


  • UL Class I, Div 2
  • CE
  • ATEX
  • CSA Class I, Div 2
  • C-Tick
  • Marine certification
  • SIL 2
  • ODVA
  • ControlNet

FLEX I/O conformal coated products meet or exceed the following standards:

  • ANSI / ISA-S71.04-1985, Class G1, G2, and G3 environments
  • CEI IEC 6065A-4 Class 1 and 2 environments
  • UL 746E
Looking for Additional Information?

To find additional product information including CAD drawing files, 3D models and more use our Product Catalog.


Resource Publication Number Language
FLEX I/O and FLEX I/O XT Product Profile 1794-PP019
FLEX I/O and FLEX Ex I/O Selection Guide 1794-SG002
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