1756IB16I Allen Bradley

ControlLogix I/O Module Accessories

Chassis and Power Supply

1756 ControlLogix I/O modules must be mounted in a ControlLogix chassis and each chassis requires a power supply. For more information
about the 1756 Chassis and Power Supply options available for your system,

Standard I/O Module Wiring

1756 ControlLogix standard I/O modules require 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. For more information about the
RTBs and IFMs available for your system.

Safety I/O Module Wiring

1756 ControlLogix safety I/O modules require either a specific Removable Terminal Block (RTB) or 1492 interface module (IFM) to connect all
field-side wiring.
• 1756-IB16S and 1756-IB16SK (1756 ControlLogix 16-point Sinking Safety Input Modules) have been agency certified using only the
ControlLogix RTBs (1756-TBCHS or 1756-TBS6HS).
• 1756-OBV8S and 1756-OBV8SK (ControlLogix 8-point Safety Bipolar/Sourcing Output Modules) have been agency certified using only
the ControlLogix RTBs (1756-TBNHS and 1756-TBSHS).
• For information about the IFM module wiring systems that have been tested for use with 1756 Safety I/O modules, see Knowledgebase
Technote, 1492 IFM Modules, Cables and Wiring Diagrams for 1756-IB16S, 1756-OBV8S Safety I/O Modules.
RTBs and IFMs are not included with the I/O modules. They must be ordered separately. For more information about the RTBs and IFMs
available for your system, see page 233 and page 234.
Any application that requires agency certification of the ControlLogix system by using other wiring termination methods may require
application-specific approval by the certifying agency

Available 1756 I/O Modules

Certain I/O module catalog numbers contain characters at the end of the catalog number that indicate additional features.
Character I/O Type Description
D Diagnostic These modules provide diagnostic features to the point level.
E Electronic fusing These modules have internal electronic fusing to help prevent too much current from flowing through the module.
I Individually isolated These modules have individually isolated inputs or outputs.
K Conformal coated These modules have conformal coating that adds a layer of protection when exposed to harsh, corrosive environments.
H HART interface These modules send and receive digital information across analog wires between smart devices and control or monitoring systems
data using HART (Highway Addressable Remote Transducer) protocol.
S Scheduled or Safety These modules offer time-scheduled output control or ensure that ControlLogix control systems operate safely.
SOE Sequence of Events These modules offer sub-millisecond time-stamping on a per point basis.