1769-L16ER-BB1B 5370 L1 Controller with 32-Point I/O and Dual Ethernet

The 1769-L16ER-BB1B is a compact 5370 L1 programmable controller that combines processing, 32 embedded digital I/O points, dual Ethernet communication and a 24 V DC power supply in one space-saving unit.

Its integrated I/O consists of 16 sinking digital inputs and 16 sourcing digital outputs. This allows small machines to operate without a separate local digital I/O module when the built-in point count is sufficient.

Two Ethernet ports support linear and Device Level Ring network layouts. The controller supports up to four EtherNet/IP nodes and can be expanded with as many as six compatible POINT I/O modules.

With 384 KB of user memory and an included 1 GB SD card, this model is designed for compact standalone machines, modular equipment and distributed control applications with limited I/O and network requirements.

Key Features

• 384 KB user memory
• 16 sinking digital inputs
• 16 sourcing digital outputs
• Dual EtherNet/IP ports
• Device Level Ring support
• Four EtherNet/IP node capacity
• Six-module local I/O expansion
• Integrated 24 V DC power supply

Typical Applications

• Compact packaging machines
• Small assembly stations
• Conveyor control systems
• Material-handling equipment
• Standalone production machines

Integrated 32-Point Digital I/O

The controller includes:

Digital Inputs

16 points

Input Type

24 V DC sinking

Digital Outputs

16 points

Output Type

24 V DC sourcing

The integrated I/O reduces the need for separate digital input and output modules in small control systems.

The field-device polarity must match the controller’s input and output configurations.

Dual Ethernet Ports with DLR

The two Ethernet ports support:

• Linear network connections
• Device Level Ring topology
• Controller communications
• Distributed I/O connections
• Operator-interface communication
• Drive and field-device integration

Device Level Ring capability can improve network availability by providing an alternative communication path when correctly configured.

Four EtherNet/IP Node Limit

The 1769-L16ER-BB1B supports up to four EtherNet/IP nodes.

A node may include a compatible:

• Distributed I/O adapter
• Variable-frequency drive
• Servo drive
• Communication device
• Other Ethernet-connected automation device

The four-node limit is an important difference from higher-capacity L18 and L19 controllers.

A computer, programming terminal or operator interface may not always be counted in the same way as configured I/O nodes, depending on the connection type and project design.

POINT I/O Expansion

The controller supports up to six compatible POINT I/O expansion modules on its local bus.

Expansion options may include:

• Digital input modules
• Digital output modules
• Analog input modules
• Analog output modules
• Specialty I/O modules

Module compatibility, bus power consumption and installation order must be checked before configuring the system.

384 KB User Memory

The controller provides 384 KB of user memory for:

• Control programs
• Tags and data
• Communication configuration
• I/O configuration
• Application logic

This capacity is intended for compact machines rather than large process systems or applications with extensive data handling.

Included SD Storage

A 1 GB SD card is normally supplied with the controller.

The memory card can be used for supported functions such as:

• Project storage
• Controller image storage
• Firmware-related operations
• Backup and recovery procedures

The controller also supports a compatible higher-capacity 2 GB card when ordered separately.

Integrated 24V DC Power Supply

The controller operates from a 24 V DC supply and includes the power functionality required for the controller and local POINT I/O bus.

Before installation, verify:

• Supply voltage range
• Available current
• Field-power demand
• I/O module bus consumption
• Grounding arrangement
• Inrush and protection requirements

The embedded supply does not remove the need to calculate field-device power requirements.

1769-L16ER-BB1B vs 1769-L18ER-BB1B

1769-L16ER-BB1B

384 KB user memory

Up to 4 EtherNet/IP nodes

Up to 6 local I/O modules

1769-L18ER-BB1B

512 KB user memory

Up to 8 EtherNet/IP nodes

Up to 8 local I/O modules

The L18 model is more suitable when additional memory, network devices or local expansion modules are required.

1769-L16ER-BB1B vs 1769-L18ERM-BB1B

1769-L16ER-BB1B

Standard L1 controller

Compact machine control

Limited integrated motion capacity

1769-L18ERM-BB1B

Motion-focused L1 controller

Higher memory and expansion capacity

Designed for more demanding motion applications

Controller selection should be based on motion requirements as well as memory and I/O capacity.

1769-L16ER-BB1B vs 1769-L24ER-QB1B

1769-L16ER-BB1B

384 KB memory

32 embedded digital I/O points

Uses POINT I/O local expansion

Compact L1 architecture

1769-L24ER-QB1B

Higher memory capacity

Additional embedded analog and high-speed functions

Uses 1769 Compact I/O expansion

Larger L2 architecture

The L24 controller is intended for applications requiring greater integrated I/O and expansion capability.

Input and Output Polarity

The controller uses:

• Sinking digital inputs
• Sourcing digital outputs

This means field sensors and actuators must be selected and wired with compatible polarity.

Incorrect polarity can prevent operation or damage connected equipment.

Network Capacity Planning

Before configuring the Ethernet network, count all required I/O communication nodes.

Confirm whether the project includes:

• Distributed I/O adapters
• Drives
• Servo systems
• Remote communication modules
• Other cyclic I/O devices

A project requiring more than four EtherNet/IP nodes should use a controller with greater network capacity.

Replacement Compatibility

Before replacing an existing controller, verify:

• Complete model number
• Hardware series
• Firmware revision
• Project software compatibility
• Embedded I/O wiring
• Ethernet node count
• Expansion module arrangement
• SD card contents
• Controller IP address
• Retentive data
• Machine safety condition

A controller with a similar appearance may have different memory, expansion and network limits.

Installation Notes

• Back up the existing controller project
• Record the current firmware revision
• Record Ethernet addresses and settings
• Disconnect controller and field power
• Verify sinking input wiring
• Verify sourcing output wiring
• Check local I/O module compatibility
• Confirm 24 V DC supply capacity
• Install the end cap correctly
• Restore and validate the project
• Test all inputs and outputs
• Verify network communication before production

FAQ

Q1: How much user memory does 1769-L16ER-BB1B provide?

A1: It provides 384 KB of user memory.

Q2: Does the controller include digital I/O?

A2: Yes. It includes 16 digital inputs and 16 digital outputs.

Q3: What are the embedded I/O polarities?

A3: The inputs are 24 V DC sinking, and the outputs are 24 V DC sourcing.

Q4: How many Ethernet ports are included?

A4: It has two Ethernet ports with Device Level Ring capability.

Q5: How many EtherNet/IP nodes are supported?

A5: The controller supports up to four EtherNet/IP nodes.

Q6: How many local expansion modules can be installed?

A6: Up to six compatible POINT I/O modules can be installed.

Q7: What power supply does it require?

A7: It operates from a 24 V DC supply.

Q8: What distinguishes it from 1769-L18ER-BB1B?

A8: The L16 model has 384 KB memory, four EtherNet/IP nodes and six-module expansion, while the L18 model provides higher capacity.