Flex I/O 1794

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The Flex I/O 1794 system is a distributed I/O system from Allen-Bradley/Rockwell Automation. This Allen-Bradley manufactured system helps to connect several networks together by using different communication protocols, including the Ethernet/IP, ControlNet, and DeviceNet networks. It is a low-cost modular distribution system that offers different features and functionalities in its modules. It is rack-based and this design saves factory installation space. The Flex I/O 1794 system allows 2 separate connection terminals for field power, which makes connections to the adjacent terminal bases easy. A single adapter has the ability to communicate with 8 input/output modules. It can connect with 256 digital I/O or 96 analog I/O or a mixture of analog and digital I/O to meet the demands of different applications or users. The I/O from the 1794 series are compact in size and they use wires directly from the sensor to the terminal base which makes the installation process less complicated and eliminates the use of terminal strips. This system is easy to configure and run by using the speed engineering and installation wizards. The removal and insertion under power feature and the module level diagnosis feature in the system reduces the downtime of the system.


The Flex I/O 1794 system supports HART, RTD, and thermocouple applications. The systems are available with modules in different variants. Some of the module variants in the 1794 series have isolated inputs or outputs, protected outputs, electronic fusing, or diagnostic features that are available on some modules. The analog modules in the 1794 series come with individually-configured channels. They make use of selectable input filters on many modules. The Flex I/O 1794 system supports on-board scaling and internal calibration is possible with different modules. The system has been certified with the ATEX, CE, UL, SIL2, ODVA, and C-Tick standards. Some of the special environmentally rated modules in the 1794 system series can be operated in harsh environments because they are conformally coated.

Allen Bradley 1794 Flex I/O Modules 

Technical Specifications

  • 1794 Flex I/O Modules operating input-voltage range from 19.2-31.1V DC
  • Power supply input-voltage range from 120-240V AC
  • Network compatibility:
    • EtherNet/IP
    • ControlNet
    • DeviceNet
    • Remote I/O
    • PROFIBUS DP/DPV1
  • Communication rate of 10/100 Mbps, 5 Mbps, 125 Kbps, 250 Kpbs, or 500 Kpbs

Allen Bradley 1794 Flex I/O Modules 

Technical Specifications

  • 1794 Flex I/O Modules operating input-voltage range from 19.2-31.1V DC
  • Power supply input-voltage range from 120-240V AC
  • Network compatibility:
    • EtherNet/IP
    • ControlNet
    • DeviceNet
    • Remote I/O
    • PROFIBUS DP/DPV1
  • Communication rate of 10/100 Mbps, 5 Mbps, 125 Kbps, 250 Kpbs, or 500 Kpbs
Flex I/O 1794 Description Stock Level
1794-0F4I

The 1794-0F4I module is an Allen-Bradley isolated analog output module. The component features heat dissipat...

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1794-ACN The Allen-Bradley 1794-ACN ControlNet Adapter has a 400mA max. from External 24V Supply Power Consumption and a 4.6W max....
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1794-ACN15 The Allen-Bradley 1794-ACN15 Redundant Media ControlNet Adapter has a 23A for 2ms Inrush Current and a 4.6W max. @ 19.2...
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1794-ACNR The Allen-Bradley 1794-ACNR Flex I/O Controlnet Redundant Media Adapter has a 23A for 2ms Inrush Current and a 4.6W max....
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1794-ACNR1Allen Bradley- AB |REDUNDANT MEDIA ADAPTER FOR CONTROLNET FLEX I/O PLC
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1794-ACNR15 The Allen-Bradley 1794-ACNR15 Redundant Media ControlNet Adapter has a 23A for 2ms Inrush Current and a 4.6W max. @ 19...
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1794-ACNR15K

The 1794-ACNR15K module is an ControlNet adapter module. It is part of the Flex I/O series from Allen-Bradley....

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1794-ACNR15XT

The Allen-Bradley 1794-ACNR15XT adapter is a Flex I/O adapter. It support communications over the ControlNet ...

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1794-ADN The Allen-Bradley 1794-ADN DeviceNet Adapter has a 90 mA max. Power Consumption and a 7.6W max. @ 19.2V DC Power Dissipat...
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1794-AENT The Allen-Bradley 1794-AENT Flex I/O Ethernet/IP Adapter has a None(open-style) Enclosure Type Rating and a 50V Continuo...
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1794-AENTR The Allen-Bradley 1794-AENTR Flex I/O Dual Port Ethernet/IP Adapter Module has a None(open-style) Enclosure Type Rating...
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1794-AENTRXT

The 1794-AENTRXT adapater is a Allen-Bradley communication adapter module. It supports dual Ethernet interface...

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1794-APB The Allen-Bradley 1794-APB PROFIBUS Adapter has a 400mA max. Power Consumption and a 7.68W max @ 19.2V DC Power Dissipati...
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1794-APBDPV1 The Allen-Bradley 1794-APBDPV1 Flex I/O PROFIBUS Communications Adapter has a Sandard Drop PROFIBUS CABLE and a 9-pin...
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1794-ASB The Allen-Bradley 1794-ASB Remote IO Adapter has a 330mA Power Consumption and a 4.6W max. @ 31.2V DC Power Dissipation.
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1794-ASB2 The Allen-Bradley 1794-ASB2 Remote IO Adapter has a 330mA Power Consumption and a 4.6W max. @ 31.2V DC Power Dissipatio...
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1794-ASBLT The Allen-Bradley 1794-ASBLT Flex I/O Remote I/O Adapter Module has a 23A @ 24V DC Power Supply and a 4.6W max. @ 31.2V...
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1794-AV-MVIAllen Bradley- AB |COMMUNICATION MODULE PLC
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1794-CE1 The Allen-Bradley 1794-CE1 has a 1 ft. Length.
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1794-CE3 The Allen-Bradley 1794-CE3 has a 3 ft. Length.
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1794-CJC2 The Allen-Bradley 1794-CJC2 has a 0-70 C Range.
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1794-FLA The Allen-Bradley 1794-FLA FlexLogix Extended-local IO Adapter has a 0.6-0.8 Nm Power Connector Torque and a 7.5W max @ 1...
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1794-IA16 The Allen-Bradley 1794-IA16 Flex I/O AC Digital Input Module has a 20V AC Off-state Voltage max. and a 2.9mA Off-state C...
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1794-IA8 The Allen-Bradley 1794-IA8 Flex I/O AC Digital Input Module has a 43V AC Off-state Voltage max. and a 2.9mA Off-state Cur...
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1794-IA8I The Allen-Bradley 1794-IA8I Flex I/O AC Digital Input Module has a 43V AC Off-state Voltage max. and a 2.9mA Off-state C...
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1794-IA8K The Allen-Bradley 1794-IA8K Flex I/O AC Digital Input Module has a 43V AC Off-state Voltage max. and a 2.9mA Off-state C...
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1794-IB16 The Allen-Bradley 1794-IB16 Flex I/O Digital Input Modules has a 5V DC Off-state Voltage max. and a 1.5mA Off-state Curr...
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1794-IB16D The Allen-Bradley 1794-IB16D Flex I/O Digital Input Module w/ Diagnostics has a 2.2V DC max. Sensor Power Voltage Drop ...
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1794-IB16XOB16P

The Allen-Bradley Rockwell Automation 1794-IB16XOB16P Flex I/O Input/Output Module has a 16-Point 24VDC Sinking ...

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1794-IB32 The Allen-Bradley 1794-IB32 Flex I/O Digital Input Modules has a 5V DC Off-state Voltage max. and a 1.5mA Off-state Curr...
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1794-IB8 The Allen-Bradley 1794-IB8 Flex I/O Digital Input Modules has a 5V DC Off-state Voltage max. and a 1.5mA Off-state Curren...
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1794-IB8S The Allen-Bradley 1794-IB8S Flex I/O Digital Input Modules has a 5V DC Off-state Voltage max. and a 1.5mA Off-state Curr...
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1794-IC16 The Allen-Bradley 1794-IC16 Flex I/O Digital Input and Output Module has a 10V DC Off-state Voltage max. and a 1.5mA Off...
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1794-ID2 The Allen-Bradley 1794-ID2 Channel Incremental Encoder Module has a 3V DC Off-state Voltage max. and a 100kHz max. Counti...
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1794-IE12 The Allen-Bradley 1794-IE12 Flex I/O High-Density Analog Module has a 80 mA FlexBus Current and a 24V DC nom. External D...
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1794-IE4XOE2 The Allen-Bradley 1794-IE4XOE2 Flex I/O High-Density Analog Module has a 20mA FlexBus Current and a 2 Single-ended Ou...
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1794-IE4XOE2XT

The Allen-Bradley 1794-IE4XOE2XT analog I/O module has 4 analog inputs and 2 analog outputs. This analog combinat...

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1794-IE8 The Allen-Bradley 1794-IE8 Flex I/O High-Density Analog Module has a 60 mA FlexBus Current and a 60 mA @ 24V DC External ...
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1794-IE8H The Allen-Bradley 1794-IE8H Flex I/O HART Analog Module has a 5V DC 80mA FlexBus Current External Input and a None (open...
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1794-IE8K The Allen-Bradley 1794-IE8K Flex I/O High-Density Analog Module has a 20mA FlexBus Current and a 24V DC nom. External DC...
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1794-IE8XOE4

The Allen-Bradley 1794-IE8XOE4 module is a high-density FLEX I/O module. In a complete FLEX I/O modular system...

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1794-IE8XT

The Allen-Bradley 1794-IE8XT FLEX I/O module is an analog I/O module that can connect to an adapter and a termin...

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1794-IF2XOF2I The Allen-Bradley 1794-IF2XOF2I Flex I/O Isolated Input/Output Analog Module has a 50mA FlexBus Current and a 2 Isol...
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1794-IF2XOF2IXT The Allen-Bradley 1794-IF2XOF2IXT Flex XT I/O Isolated Input Analog Module has a 50mA FlexBus Current and a 24V DC...
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1794-IF4I The Allen-Bradley 1794-IF4I Flex I/O Isolated Input Analog Module has a 50mA FlexBus Current and a 24V DC nom. External ...
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1794-IF4ICFXT The Allen-Bradley 1794-IF4ICFXT Flex XT I/O Isolated Input Analog Module has a 50mA FlexBus Current and a 24V DC nom...
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1794-IF4IXT The Allen-Bradley 1794-IF4IXT Flex XT I/O Isolated Input Analog Module has a 50mA FlexBus Current and a 24V DC nom. Ex...
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1794-IF8IH

The Allen-Bradley 1794-IF8IH FLEX I/O module is a HART analog module that has isolated inputs. It is compat...

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1794-IF8IHNFXT

The 1794-IF8IHNFXT module from Allen-Bradley/Rockwell Automation is a FLEX I/O HART analog module from a ser...

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1794-IH16

The Allen-Bradley 1794-IH16 FLEX I/O module is a digital input module that operates with 125 Volts DC voltage. The All...

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1794-IJ2 The Allen-Bradley 1794-IJ2 Flex I/O 2 Input Frequency Module has a 24V DC Output Voltage nom. and a 31.2V DC Output Off-s...
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1794-IJ2K The Allen-Bradley 1794-IJ2K Flex I/O 2 Input Frequency Module has a 24V DC Output Voltage nom. and a 31.2V DC Output Off...
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1794-IJ2XT The Allen-Bradley 1794-IJ2XT Flex I/O 2 Input Frequency Module has a 24V DC Output Voltage nom. and a 31.2V DC Output O...
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1794-IM8 The Allen-Bradley 1794-IM8 Flex I/O 220V AC Digital Input Module has a 22.3 k? Nominal Input Impedance and a 12mA @ 240V ...
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1794-IP4 The Allen-Bradley 1794-IP4 Flex I/O 4 Channel Pulse Counter Module has a None(open-style) Enclosure Type Rating and a 5mA...
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1794-IR8 The Allen-Bradley 1794-IR8 Flex I/O RTD Module has a 0-2.62Hz Channel Bandwidth and a 325 ms Normal Mode System Throughpu...
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1794-IRT8

The 1794-IRT8 module is an Allen-Bradley FLEX I/O millivolt, thermocouple, and RTD module. The Series B version o...

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1794-IRT8K

The Allen-Bradley 1794-IRT8K FLEX I/O RTD, thermocouple, and millivolt input module comes in a Series A version ...

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1794-IRT8XT

The 1794-IRT8XT module has been designed and manufactured by Allen-Bradley in its FLEX I/O series as a thermoco...

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1794-IT8 The Allen-Bradley 1794-IT8 Flex I/O Thermocouple Input Analog Module has a 0-2.62Hz Channel Bandwidth and a 325 ms Normal...
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1794-IV32

The Allen-Bradley 1794-IV32 digital I/O module is a FLEX I/O module. The 1794-IV32 FLEX I/O module has ...

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1794-L33 The Allen-Bradley 1794-L33 FlexLogix Controller System has a 653mA @ 5.1V DC max. Flexbus Current Output and a 87 BTU/hr....
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1794-L34 The Allen-Bradley 1794-L34 FlexLogix Controller System has a 653mA @ 5.1V DC max. Flexbus Current Output and a 87 BTU/hr....
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1794-LBL The Allen-Bradley 1794-LBL has a 5 Labels.
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1794-NM1 The Allen-Bradley 1794-NM1 is a Panel Mounting Kit for Flex I/O.
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1794-OA16 The Allen-Bradley 1794-OA16 Flex I/O Digital Output Module has a 2.25mA Off-state Leakage Current max. and a 120V Contin...
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1794-OA8 The Allen-Bradley 1794-OA8 Flex I/O Digital Output Module has a 2.25mA Off-state Leakage Current max. and a 120V Continuo...
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1794-OA8I The Allen-Bradley 1794-OA8I Flex I/O Digital Output Module has a 2.25mA Off-state Leakage Current max. and a 120V Contin...
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1794-OA8K The Allen-Bradley 1794-OA8K Flex I/O Digital Output Module has a 2.25mA Off-state Leakage Current max. and a 120V Contin...
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1794-OB16 The Allen-Bradley 1794-OB16 Flex I/O Digital DC Output Module has a 0.5mA Off-state Leakage Current max. and a 50V Conti...
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1794-OB16D The Allen-Bradley 1794-OB16D Flex I/O Digital Output Module w/ Diagnostics has a 0.5 ms Output Signal Delay and a 50V I...
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1794-OB16P The Allen-Bradley 1794-OB16P Flex I/O Digital DC Output Module has a 0.5mA Off-state Leakage Current max. and a 50V Con...
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1794-OB32P The Allen-Bradley 1794-OB32P Flex I/O Digital DC Output Module has a 0.5mA Off-state Leakage Current max. and a 50V Con...
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1794-OB8 The Allen-Bradley 1794-OB8 Flex I/O Digital DC Output Module has a 0.5mA Off-state Leakage Current max. and a 50V Continu...
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1794-OB8EP The Allen-Bradley 1794-OB8EP Flex I/O Digital DC Output Module has a 0.5mA Off-state Leakage Current max. and a 50V Con...
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1794-OC16 The Allen-Bradley 1794-OC16 Flex I/O Digital Input and Output Module has a 60V DC Off-state Voltage max. and a 1.0mA Off...
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1794-OE12 The Allen-Bradley 1794-OE12 Flex I/O Analog Output Module has a 0.641 ?A/cnt Current Resolution and a 0750 ? @ 24V DC R...
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1794-OE4 The Allen-Bradley 1794-OE4 Flex I/O Output Analog Module has a +/- 10V Output Voltage Terminal and a 3mA max. Current Lo...
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1794-OE4K The Allen-Bradley 1794-OE4K Flex I/O Output Analog Module has a +/- 10V Output Voltage Terminal and a 3mA max. Current ...
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1794-OE8H

The 1794-OE8H analog module from Allen-Bradley is a FLEX I/O HART module. The 1794-OE8H module can use the C...

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1794-OF4I The Allen-Bradley 1794-OF4I Flex I/O Isolated Output Analog Module has a 50mA FlexBus Current and a 120V Continuous Isol...
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1794-OF4IXT The Allen-Bradley 1794-OF4IXT Flex XT I/O Isolated Output Analog Module has a 50mA FlexBus Current and a 120V Continuo...
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1794-OF8IH

The Allen-Bradley 1794-OF8IH module is made by Allen-Bradley/Rockwell Automation as a FLEX I/O module. The&...

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1794-OM8 The Allen-Bradley 1794-OM8 Flex I/O Digital Output Module has a 2.5mA Off-state Leakage max. and a 250V Continuous Isolat...
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1794-OV16 The Allen-Bradley 1794-OV16 Flex I/O Digital Sinking Output Module has a 0.5mA max. Off-state Leakage and a 0.2V DC max...
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1794-OV16P The Allen-Bradley 1794-OV16P Flex I/O Digital Sinking Output Module has a 0.5mA max. Off-state Leakage and a 0.2V DC m...
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1794-OV32

The 1794-OV32 FLEX I/O module from Allen-Bradley is a communication module for industrial machines. It can b...

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1794-OW8 The Allen-Bradley 1794-OW8 Flex I/O Relay Output Module has a 1.2ms Bounce Time and a 1 operation/3 s (0.3Hz at rated loa...
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1794-OW8K The Allen-Bradley 1794-OW8K Flex I/O Relay Output Module has a 1.2ms Bounce Time and a 1 operation/3 s (0.3Hz at rated l...
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1794-OW8XT The Allen-Bradley 1794-OW8XT Flex I/O Relay Output Module has a 1.2ms Bounce Time and a 1 operation/3 s (0.3Hz at rated...
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1794-PS1 The Allen-Bradley 1794-PS1 Flex I/O Power Supply Module has a 1A max. Output Current and a 100mA Minimum Load.
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1794-PS13 The Allen-Bradley 1794-PS13 Flex I/O DC Power Supply Module has a 1.3A max. Output Current and a 0mA Minimum Load.
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1794-PS3 The Allen-Bradley 1794-PS3 Flex I/O DC Power Supply Module has a 3A max. Output Current and a 50mA Minimum Load.
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1794-TB2 The Allen-Bradley 1794-TB2 Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.21-1.3 mm^2 Wire Size.
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1794-TB3 The Allen-Bradley 1794-TB3 Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^2 Wire Size.
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1794-TB32 The Allen-Bradley 1794-TB32 Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.21-1.3 mm^2 Wire Size.
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1794-TB32S The Allen-Bradley 1794-TB32S Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^2 Wire Size.
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1794-TB3G The Allen-Bradley 1794-TB3G Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.21-1.3 mm^2 Wire Size.
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1794-TB3GS The Allen-Bradley 1794-TB3GS Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^2 Wire Size.
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1794-TB3S The Allen-Bradley 1794-TB3S Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-TB3SA The Allen-Bradley 1794-TB3SA Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-TB3T The Allen-Bradley 1794-TB3T Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-TB3TS The Allen-Bradley 1794-TB3TS Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-TBN The Allen-Bradley 1794-TBN Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-TBNF The Allen-Bradley 1794-TBNF Flex I/O Terminal Base Unit has 94x94x69 mm Dimensions and a 0.34-3.3mm^3 Wire Size.
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1794-VHSC The Allen-Bradley 1794-VHSC Flex I/O Very High Speed Counter Module has a >5mA Input On-state Current and a 2 Isolated G...
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1794IEXOE2Allen Bradley- AB |MODULE PLC
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1794IEXOE2AAllen Bradley- AB |4/2 ANALOG COMBO PLC
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1794sc-IF8IU The 1794sc-IF8IU Input Module has a 31 mA cont. Input Overcurrent Protection and a 5.18 W Thermal Dissipation.
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1794sc-IRT8I The 1794sc-IRT8I Input Module has a 31 mA cont. Input Overcurrent Protection and a 5.18 W Thermal Dissipation.
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3170-MBS The 3170-MBS Modbus Slave Network Interface Adapter has a 12-24V DC External Power Supply and a 20 mA @ 5V Backplane Curr...
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3170-PDP The 3170-PDP PROFIBUS Network Interface Adapter has a 12-24V DC External Power Supply and a 20 mA @ 5V Backplane Current ...
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MVI94-ADM The MVI94-ADM 'C' Programmable Application Development Module has a 12-24V DC External Power Supply and a 20 mA @ 5V Bac...
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MVI94-DNP The MVI94-DNP DNP 3.0 Master/Slave Communication Module has a 12-24V DC External Power Supply and a 20 mA @ 5V Backplane...
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MVI94-GSC-E The MVI94-GSC-E Generic Serial ASCII Network Interface Module has 10 max. Characters per Block and a 12-24V DC Externa...
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MVI94-MCM The MVI94-MCM Modbus Master/Slave Network Interface Module has a 12-24V DC External Power Supply and a 20 mA @ 5V Backpl...
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MVI94-MCM-MHI The MVI94-MCM-MHI Modbus Mitsubishi Heavy Industries Network Interface Module has a 30g Operational Shock and a 20 m...
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Flex I/O 1794 Description Stock Level