The Allen-Bradley 1769-L19ER-BB1B, also cataloged as the 1769L19ERBB1B CPU Processors, operates as a dedicated hardware component for executing machine logic and real-time I/O control within EtherNet/IP distributed networks.

Component Architecture

The controller utilizes a 1 MB user memory capacity with a 1 GB replaceable non-volatile memory module for application data retention. The system design integrates 16 embedded 24 VDC digital inputs directly onto the logic processor, supporting up to 8 local POINT I/O expansion modules. Communication is facilitated through two 10/100 Mbps EtherNet/IP ports, supporting linear, star, and Device Level Ring (DLR) network topologies for deterministic data exchange.

Hardware Specifications

EtherNet/IP Deterministic Network Performance

The 1769-L19ER-BB1B utilizes a dedicated network co-processor for EtherNet/IP traffic management, ensuring deterministic communication latency within multi-node industrial environments. By supporting DLR topologies, the module maintains network availability during single-cable fault conditions through hardware-level fast-convergence timing. The firmware flash compatibility allows for version upgrades to match existing ControlLogix or CompactLogix system projects, ensuring consistency in tag-based data structures across the backplane bus.

Ordering info

• 1769-L19ER-BB1B Controller unit.

• 1769-RTBN18 terminal block for field wiring.

• 1 GB non-volatile memory module (pre-installed).

• Note: Additional POINT I/O modules must be ordered as separate catalog items.

Field Installation Guidelines

• Ensure the module is mounted on a 35 mm DIN rail or panel with sufficient clearance for ventilation.

• Use copper-only wiring rated for at least 90 deg C for all I/O connections.

• Terminate shield wires at the designated ground point on the chassis to minimize common-mode noise.

• Verify the 24 VDC power supply voltage level at the terminal block before engagement to prevent logic circuit fluctuations.

• Secure all terminal blocks using the integrated locking mechanism to prevent loosening from vibration.

Logistics and Shipping

• Delivery time: 3-5 days when payment finish.

• Dispatched via DHL/FEDEX/UPS.

• Anti-static industrial packaging utilized for all transit to prevent electrostatic discharge damage.

Technical FAQ

• What is the maximum number of Ethernet nodes supported?

  The controller supports up to 8 Ethernet nodes within the system architecture.

• How is the controller firmware updated?

  Firmware is updated via the integrated USB port using the ControlFlash utility software.

• Can the 1 GB non-volatile memory be hot-swapped?

  No, the memory module should only be replaced when the controller is in a de-energized state to prevent data corruption.

• What is the primary function of the integrated USB port?

  The USB port provides a dedicated physical interface for local programming and configuration via Studio 5000 Logix Designer.

• Are the embedded inputs isolated?

  The inputs share a common reference point; refer to the electrical schematics for proper sinking/sourcing configuration.

• What happens during a loss of power to the non-volatile memory?

  The memory module is non-volatile; therefore, it retains all stored programs and configuration data without requiring battery backup.