I/O Modules

1756 ControlLogix I/O Modules

The ControlLogix architecture provides a wide range of input and output modules to span many applications, from high-speed digital to process control. The ControlLogix architecture uses Producer-Consumer technology, which allows input information and output status to be shared among multiple ControlLogix controllers.

Click to enlarge - Producer Consumer_BW


Each ControlLogix I/O module mounts in a ControlLogix chassis and requires either a removable terminal block (RTB) or a 1492 interface module (IFM) to connect all field-side wiring. RTBs and IFMs are not included with the I/O modules. They must be ordered separately.

Environmentals and Certifications

ControlLogix I/O Modules Environmental Specifications

  ControlLogix I/O Modules
Operating Temperature 0…60 °C (32…140 °F)
Storage temperature
-40…85 °C (-40…185 °F)
Relative Humidity 5…95% noncondensing
Vibration 2 g at 10…500 Hz
Operating Shock 30 g
Nonoperating Shock 50 g

ControlLogix I/O Modules Certifications

Certifications: (When product is marked.) c-UL-us, CE, CSA, C-Tick, FM, ATEX, TÜV.

See the Product Certifications link at ab.rockwellautomation.com/ for Declarations of Conformity, Certificates, and other certification details. For TÜV and SIL certification details, see the Safety Certificates and SIL link.


Digital I/O Modules

The 1756 digital I/O modules support these features.


In addition, you can select these types of digital I/O modules.

Digital I/O Type Description
Diagnostic These modules provide diagnostic features to the point level. These modules have a D at the end of the catalog number.
Electronic fusing These modules have internal electronic fusing to prevent too much current from flowing through the module. These modules have an E at the end of the catalog number.
Individually isolated These modules have individually isolated inputs or outputs.
These modules have an I at the end of the catalog number.

Digital AC Input Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Voltage Category Operating Voltage Range Removable Terminal Block
1756-IA8D 8 diagnostic inputs (4 points/group) 120V AC 79…132V AC 1756-TBNH
1756-TBSH
1756-IA16 16 inputs (8 points/group) 120V AC 74…132V AC 1756-TBNH
1756-TBSH
1756-IA16K Conformal coated 16 inputs (8 points/group) 120V AC 74…132V AC 1756-TBNH
1756-TBSH
1756-IA16I 16 individually isolated inputs 120V AC 74…132V AC 1756-TBCH
1756-TBS6H
1756-IA16IK Conformal coated 16 individually isolated inputs 120V AC 74…132V AC 1756-TBCH
1756-TBS6H
1756-IA32 32 diagnostic inputs (4 points/group) 120V AC 74…132V AC 1756-TBCH
1756-TBS6H
1756-IM16I 16 individually isolated inputs 240V AC 159…265V AC 1756-TBCH
1756-TBS6H
1756-IM16IK Conformal coated 16 individually isolated inputs 240V AC 159…265V AC 1756-TBCH
1756-TBS6H
1756-IN16 16 inputs (8 points/group) 24V AC 10…30V AC 1756-TBNH
1756-TBSH
  

Digital AC Output Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Voltage Category Operating Voltage Range Removable Terminal Block
1756-OA8 8 outputs (4 points/group) 120/240V AC 79…265V AC 1756-TBNH
1756-TBSH
1756-OA8D 8 diagnostic, electronically fused outputs (4 points/group) 120V AC 74…132V AC 1756-TBNH
1756-TBSH
1756-OA8E 8 electronically fused outputs (4 points/group) 120V AC 74…132V AC 1756-TBNH
1756-TBSH
1756-OA16 16 mechanically fused/group outputs (8 points/group) 120/240V AC 74…265V AC 1756-TBNH
1756-TBSH
1756-OA16K Conformal coated 16 mechanically fused/group outputs (8 points/group) 120/240V AC 74…265V AC 1756-TBNH
1756-TBSH
1756-OA16I 16 individually isolated outputs 120/240V AC 74…265V AC 1756-TBCH
1756-TBS6H
1756-OA16IK Conformal coated 16 individually isolated outputs 120/240V AC 74…265V AC 1756-TBCH
1756-TBS6H
1756-ON8 8 outputs (4 points/group) 24V AC 10…30V AC, current >50 mA
16…30V AC, current <50 mA
1756-TBNH
1756-TBSH
  

Digital DC Input Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Voltage Category Operating Voltage Range Removable Terminal Block
1756-IB16 16 inputs (8 points/group) 12/24V DC sink 10...31.2V DC 1756-TBNH
1756-TBSH
1756-IB16K Conformal coated 16 inputs (8 points/group) 12/24V DC sink 10...31.2V DC 1756-TBNH
1756-TBSH
1756-IB16D 16 diagnostic inputs (4 points/group) 12/24V DC sink 10...30V DC 1756-TBCH
1756-TBS6H
1756-IB16DK Conformal coated 16 diagnostic inputs (4 points/group) 12/24V DC sink 10...30V DC 1756-TBCH
1756-TBS6H
1756-IB16I 16 individually isolated inputs 12/24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-IB16IF 16 individually isolated fast inputs 24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-IB16IFK Conformal coated 16 individually isolated fast inputs 24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-IB16ISOE 16 individually isolated, sequence of events inputs 24/48V DC sink/source 10...55V DC 1756-TBCH
1756-TBS6H
1756-IB32 32 inputs (16 points/group) 12/24V DC sink 10...31.2V DC 1756-TBCH
1756-TBS6H
1756-IB32K Conformal coated 32 inputs (16 points/group) 12/24V DC sink 10...31.2V DC 1756-TBCH
1756-TBS6H
1756-IC16 16 inputs (8 points/group) 48V DC sink 30...55V DC at 60 °C
30...60V DC at 55 °C
1756-TBNH
1756-TBSH
1756-IG16 16 inputs (8 points/group) 5V DC TTL source (Low=True) 4.5...5.5V DC 1756-TBNH
1756-TBSH
1756-IH16I 16 individually isolated inputs 125V DC sink/source 90...146V DC 1756-TBCH
1756-TBS6H
1756-IH16ISOE 16 individually isolated, sequence of events inputs 125V DC sink/source 90...140V DC 1756-TBCH
1756-TBS6H
1756-IV16 16 inputs (8 points/group) 12/24V DC source 10...30V DC 1756-TBNH
1756-TBSH
1756-IV32 32 inputs (16 points/group) 12/24V DC source 10...30V DC 1756-TBCH
1756-TBS6H
  

Digital DC Output Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Voltage Category Operating Voltage Range Removable Terminal Block
1756-OB8 8 outputs 12/24V DC source 10...30V DC 1756-TBNH
1756-TBSH
1756-OB8EI 8 electronically fused, individually isolated outputs 12/24V DC source 10...30V DC 1756-TBCH
1756-TBS6H
1756-OB16D 16 diagnostic outputs (8 points/group) 24V DC source 19.2...30V DC 1756-TBCH
1756-TBS6H
1756-OB16DK Conformal coated 16 diagnostic outputs (8 points/group) 24V DC source 19.2...30V DC 1756-TBCH
1756-TBS6H
1756-OB16E 16 electronically fused outputs (8 points/group) 12/24V DC source 10...31.2V DC 1756-TBNH
1756-TBSH
1756-OB16EK Conformal coated 16 electronically fused outputs (8 points/group) 12/24V DC source 10...31.2V DC 1756-TBNH
1756-TBSH
1756-OB16I 16 individually isolated outputs 12/24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-OB16IS 16 individually isolated outputs
8 scheduled outputs
12/24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-OB16IEF 16 individually isolated, electronically-fused fast outputs 12/24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-OB16IEFK Conformal coated 16 individually isolated, electronically-fused fast outputs 12/24V DC sink/source 10...30V DC 1756-TBCH
1756-TBS6H
1756-OB32 32 outputs (16 points/group) 12/24V DC source 10...31.2V DC 1756-TBCH
1756-TBS6H
1756-OB32K Conformal coated 32 outputs (16 points/group) 12/24V DC source 10...31.2V DC 1756-TBCH
1756-TBS6H
1756-OC8 8 outputs (4 points/group) 48V DC source 30...60V DC 1756-TBNH
1756-TBSH
1756-OG16 16 outputs (8 points/group) 5V DC TTL Source (Low=True) 4.5...5.5V DC 1756-TBNH
1756-TBSH
1756-OH8I 8 individually isolated outputs 120V DC 90…146V DC 1756-TBCH
1756-TBS6H
1756-OV16E 16 electronically fused outputs (8 points/group) 12/24V DC sink 10...30V DC 1756-TBNH
1756-TBSH
1756-OV32E 32 electronically fused outputs (16 points/group) 12/24V DC sink 10...30V DC 1756-TBCH
1756-TBS6H
  

Contact Output Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Operating Voltage Range Removable Terminal Block
1756-OW16I 16 N.O. individually isolated outputs 5...150V DC
10...265V AC
1756-TBCH
1756-TBS6H
1756-OW16IK Conformal coated 16 N.O. individually isolated outputs 5...150V DC
10...265V AC
1756-TBCH
1756-TBS6H
1756-OX8I 8 N.O.
8 N.C. individually isolated outputs

(2 points/group)
5...150V DC
10...265V AC
1756-TBCH
1756-TBS6H
  

Analog I/O Modules

Click to enlarge - 1756-IF6I IO Module_GS


The 1756 analog I/O modules support these features.


Analog Input Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Range Resolution Removable Terminal Block
1756-IF6CIS 6 individually isolated inputs, current sourcing 0…21 mA 16 bits
0.34 mA/bit
1756-TBNH
1756-TBSH
1756-IF6I 6 individually isolated inputs ±10.5V
0…10.5V
0…5.25V
0…21 mA
16 bits
10.5V: 343 mV/bit
0…10.5V: 171 mV/bit
0…5.25V: 86 mV/bit
0…21 mA: 0.34 mA/bit
1756-TBNH
1756-TBSH
1756-IF8 8 single-ended inputs
4 differential inputs
2 high-speed differential inputs
±10.25V
0...10.25V
0...5.125V
0…20.5 mA
±10.25V: 320 mV/cnt (15 bits + sign bipolar)
0…10.25V: 160 mV/cnt (16 bits)
0…5.125V: 80 mV/cnt (16 bits)
0…20.5 mA: 0.32 mA/cnt (16 bits)
1756-TBCH
1756-TBS6H
1756-IF8K Conformal coated – 8 single-ended inputs
4 differential inputs
2 high-speed differential inputs
1756-IF8H 8 differential voltage or current inputs, HART interface ±10V
0...5V
1…5V
0...10V
0…20 mA
4…20 mA
16…21 bits 1756-TBCH
1756-TBS6H
1756-IF8HK 8 differential voltage or current inputs, conformal coated HART interface
1756-IF8I 8 single-ended inputs, 4 differential inputs, or 2 high-speed differential inputs
individually isolated
, Configurable as voltage or current inputs
±10V
0...10V
0...5V
0...20 mA
±10.25V: 320 mV/cnt (15 bits + sign bipolar)
0…10.25V: 160 mV/cnt (16 bits)
0…5.125V: 80 mV/cnt (16 bits)
0…20.5 mA: 0.32 mA/cnt (16 bits)
1756-TBCH
1756-TBS6H
1756-IF8IK Conformal coated
8 single-ended inputs, 4 differential inputs, or 2 high-speed differential inputs
individually isolated
, Configurable as voltage or current inputs
1756-IF16 16 single-ended inputs
8 differential or 4 differential (high speed) inputs
±10.5V
0…10.5V
0…5.25V
0…21 mA
16 bits
±10.5V: 343 mV/bit
0…10.5V: 171 mV/bit
0…5.25V: 86 mV/bit
0…21 mA: 0.34 mA/bit
1756-TBCH
1756-TBS6H
1756-IF16K Conformal coated
16 single-ended inputs
8 differential or 4 differential (high speed) inputs
1756-IF16H 16 differential current inputs, HART interface 0…20 mA
4…20 mA
16…21 bits
0…21mA: 0.32 mA/bit
1756-TBCH
1756-TBS6H
1756-IF16HK 16 differential current inputs, conformal coated HART interface
  

Analog RTD and Thermocouple Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Range Resolution Thermocouple Types Removable Terminal Block
1756-IR6I 6 individually isolated RTD inputs 1…487 W
2…1000 W
4…2000 W
8…4020 W
16 bits
1…487 W: 7.7 mW/bit
2…1000 W: 15 mW/bit
4…2000 W: 30 mW/bit
8…4020 W: 60 mW/bit
N/A 1756-TBNH
1756-TBSH
1756-IT6I 6 individually isolated thermocouple inputs
1 CJC
-12…78 mV
-12…30 mV
16 bits
-12...78 mV: 1.4 mV/bit
-12...30 mV: 0.7 mV/bit
B, E, J, K, R, S, T, N, C
1756-IT6I2 6 individually isolated thermocouple inputs
2 CJC
-12…78 mV (1.4 mV per bit)
-12…30 mV (0.7 mV per bit – high resolution range)
16 bits
-12...78 mV: 1.4 Vm/bit
-12...30 mV: 0.7 mV/bit
B, E, J, K, R, S, T, N, C, D, L (TXK/XK)
1756-IRT8I⋆  8 isolated channels - Any combination of RTD or Thermocouple mode 1…500 W
2…1000 W
4…2000 W
8…4000 W
-100…100 mV
24 bits
0…510 W: 0.06 m W /count
0…1020 W: 0.12 m W/count
0…2040 W: 0.25 m W /count
0…4080 W: 0.50 m W /count
-101…101 mV: 0.01 mV/count
B, C, D, E, J, K, N, R, S, T, TXK/XK (L)
1756-IRT8IK⋆  Conformal coated
8 isolated channels - Any combination of RTD or Thermocouple mode
  
⋆ Two CJC sensors for Thermocouple use. The CJC sensors, product catalog number 1756-CJC, do not come with the module.
You must order the sensors separately.

Thermocouple Accessories

Cat. No. Description
1756-CJC CJC sensor kit. This part is sold separately and ordered when the 1756-IRT8I modules are used in Thermocouple mode and temperature correction is required. Kit includes two jumpers.
  

Analog Output Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Range Resolution Removable Terminal Block
1756-OF4 4 voltage or current outputs ±10.4V
0…21 mA
Voltage:
15 bits across 10.5V, 320 mV/bit
Current:
15 bits across 21mA, 650 nA/bit
1756-TBNH
1756-TBSH
1756-OF6CI 6 individually isolated current outputs 0…21 mA 13 bits across 21mA (2.7 mA) 1756-TBNH
1756-TBSH
1756-OF6VI 6 individually isolated voltage outputs ± 10.5V 14 bits across 21V (1.3 mV)
(13 bits across 10.5V +sign bit)
1756-TBNH
1756-TBSH
1756-OF8 8 voltage or current outputs ±10.4V
0…21 mA
15 bits across 21 mA - 650 nA/bit
15 bits across 10.4V - 320 mV/bit
1756-TBNH
1756-TBSH
1756-OF8K Conformal coated – 8 voltage or current outputs
1756-OF8H 8 voltage or current outputs, HART interface ±10.4V
0…20 mA
4…20 mA
15...16 bits 1756-TBNH
1756-TBSH
1756-OF8HK 8 voltage or current outputs, conformal coated HART interface
1756-OF8I 8 isolated channels - Any combination of voltage or current mode ±10V
0…10V
0…5V
0…20 mA
15 bits across 21 mA - 650 nA/bit
15 bits across 10.4V - 320 mV/bit
1756-TBCH
1756-TBS6H
1756-OF8IK Conformal coated – 8 isolated channels - Any combination of voltage or current mode
  

Analog Combination Input and Output Module

Specifications [PDF]

Cat. No. Inputs/Outputs Range Resolution Removable Terminal Block
1756-IF4FXOF2F 4 high-speed, sub-millisecond, differential inputs
2 high-speed voltage or current outputs
Input:
± 10.5V
0…10.5V
0…5.25V
0…21 mA


Output:
± 10.4V
0…21 mA
Input:
Approx. 14 bits across ±10V DC (21V total)
±10V: 1.3 mV/bit, 14-bit effective
0…10.5V: 1.3 mV/bit, 13-bit effective
0…5.25V: 1.3 mV/bit, 12-bit effective
Approx. 12 bits across 21 mA
0…21 mA: 5.25 mA/bit


Output:
13 bits across 21 mA = 2.8 mA/bit
14 bits across 21.8V = 1.3 mV/bit
1756-TBCH
1756-TBS6H
  

Specialty I/O Modules

Specialty I/O modules are available for more application-specific needs.

Specialty I/O Modules

Specifications [PDF]

Cat. No. Inputs/Outputs Description Removable Terminal Block
1756-CFM 4 inputs (2 per channel)
2 outputs, current sourcing
Configurable flow meter module
2 Flowmeter (F) inputs used for all modes
2 Gate inputs used in Totalizer mode for prover/store count
1756-TBNH
1756-TBSH
1756-HSC 2 counters, each with 3 inputs (A, B, Z for gate/reset)
4 outputs (2 points/group)
High-speed counter module
5V Operation: 4.5…5.5V DC
12/24V Operation: 10…31.2V DC
1756-TBCH
1756-TBS6H
1756-LSC8XIB8I 8 individually isolated, standard input or counter control functionality 24V Isolated Input/Low Speed Counter Module 1756-TBCH
1756-TBS6H
1756-PLS Left section: 2 groups of 4 outputs and 4 inputs each
Center section: resolver interface and I/O control
Right section: 2 groups of 4 outputs and 4 inputs each
Programmable limit switch module Requires 3 RTBs:
1756-TBNH or
1756-TBSH

Accessories—I/O Modules

Click to enlarge - 1756-TB Terminal Blocks_GS


Removable Terminal Blocks

Removable terminal blocks (RTBs) provide a flexible interconnection between your plant wiring and 1756 I/O modules. The RTB plugs into the front of the I/O module. The type of module determines which RTB you need. You can choose screw-clamp or spring-clamp RTBs.

RTBs are not shipped with I/O modules. You must order them separately. The standard housing on the front of the wiring arm is not deep enough for 2.5 mm2 (14 AWG) wiring. If you plan to use 2.5 mm2 (14 AWG) wiring, also order the extended housing.


Removable Terminal Blocks

Specifications [PDF]

Cat. No. 1756-TBNH 1756-TBSH 1756-TBCH 1756-TBS6H 1756-TBE
Description 20-position NEMA screw-clamp RTB 20-pin spring-clamp RTB with standard housing 36-pin cage-clamp RTB with standard housing 36-pin spring-clamp RTB with standard housing Extended depth terminal block housing
Screw Torque 0.8…1 N•m
7…9 lb•in
0.4 N•m
4.4 lb•in
Screwdriver width 8 mm (5/16 in.) max

Click to enlarge - 1769 Prewired Cabled_GS


Wiring Systems

As an alternative to buying RTBs and connecting the wires yourself, you can buy a wiring system of:


Click to enlarge - 1756RTB142prewcab_BW


For more information, see the Allen-Bradley Industrial Controls Catalog, Terminal Blocks and Wiring Systems.

Or find a wiring system for your I/O module using our Build a Catalog Number product selection tool.