Configured for high-speed logic execution in EtherNet/IP distributed control networks, the Allen-Bradley 1769-L18ER-BB1B (1769-L18ER-BB1B Processor Module) provides direct physical and electrical execution of discrete automation tasks.

Model Identification Matrix

The 1769-L18ER-BB1B belongs to the CompactLogix 5370 L1 controller series. The alphanumeric designation indicates the following technical attributes:

• 1769: Compact I/O hardware platform compatibility.

• L18ER: Controller platform with 512 KB memory and dual Ethernet/IP ports.

• BB1B: Embedded I/O configuration consisting of 16 digital 24 VDC inputs.

Hardware Specifications

EtherNet/IP Deterministic Network Performance

The 1769-L18ER-BB1B controller implements deterministic EtherNet/IP communication via its integrated dual-port switch. This architecture allows for the scaling of I/O density through the backplane bus while maintaining high-speed packet processing. The firmware flash compatibility ensures that the module remains aligned with the Studio 5000 Logix Designer project requirements, supporting standard network topologies including linear and device-level ring (DLR) architectures without additional hardware components.

Ordering info

• 1769-L18ER-BB1B Controller unit.

• Integrated communication port caps.

• Instruction documentation set.

• Note: Terminal blocks for field wiring are typically required as separate hardware additions.

Installation Guidelines

• Mount the controller on a 35 mm DIN rail or directly to a backplane, ensuring proper locking of the module latches.

• Use solid copper wire sized 22 to 14 AWG for all field I/O connections, ensuring compliance with the 90 deg C temperature rating.

• Maintain a minimum clearance of 50 mm around the controller module to ensure adequate thermal heat sink dissipation during peak processing loads.

• Shielded twisted-pair Ethernet cabling is required for all communication segments to mitigate electromagnetic interference.

• Ensure the 24 VDC power supply circuit is fused at the source to protect the internal logic circuits from over-current conditions.

Logistics and Shipping

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

• Dispatched via DHL/FEDEX/UPS.

• Anti-static industrial packaging utilized to ensure protection against electrostatic discharge (ESD) and mechanical impacts during international transit.

Frequently Asked Questions

• What is the maximum task count supported?

  The controller supports up to 32 concurrent controller tasks, with a limit of 100 programs per individual task.

• Can the controller be used with distributed I/O systems?

  Yes, the dual Ethernet/IP ports allow the module to function as a controller for remote distributed I/O assemblies.

• How is the module health verified in the software?

  Module health and diagnostic status are accessible via the controller tag tree in the Logix Designer environment.

• Are the digital inputs isolated?

  The embedded 16 digital inputs share a common 24 VDC return path; refer to the technical wiring diagram for common-mode constraints.

• Does the controller support hot-swapping?

  No, the 1769-L18ER-BB1B does not support hot-swapping; power must be removed before module removal or installation.

• How is the expected service life maintained?

  Service life is maximized by operating the unit within the specified 0 to 60 deg C range and avoiding excessive vibration environments.