The Allen-Bradley 1769-L19ER-BB2B is an entry-level CompactLogix 5370 L1 controller. Unlike the L3 series, the L1 series features a compact, "all-in-one" form factor that includes integrated digital I/O and a built-in 24V DC power supply, making it ideal for small-scale automation where panel space is at a premium.
Specifications
User Memory:1 MB.
Onboard I/O:16 Digital Inputs (24V DC sink/source) and 16 Digital Outputs (24V DC source).
Ethernet Ports:2 Ethernet/IP ports (supports Linear, Star, and DLR).
Ethernet Nodes:Supports up to 8 Ethernet/IP nodes.
Local Expansion:Supports up to 8 Point I/O (1734) modules via the integrated 1734 backplane.
Power Supply:Integrated 24V DC input (range 10 to 28.8V DC).
Programming Port:USB 2.0 (Type B).
Memory Card:1784-SD1 (1 GB) or 1784-SD2 (2 GB) Secure Digital card support.
Features
Integrated Power and I/O:Simplifies installation by combining the controller, power supply, and 32 points of digital I/O into a single module width.
Point I/O Expansion:Uses the 1734 Point I/O bus instead of the 1769 bus, allowing for highly granular and cost-effective local I/O expansion.
Network Resiliency:The dual Ethernet ports support Device Level Ring (DLR) technology, ensuring the controller remains connected even if a single point of the network ring fails.
Battery-Free Operation:Uses an internal energy storage module to back up the RAM and Real-Time Clock to internal flash memory during power loss.
Open Socket Support:Allows for direct communication with non-Logix devices such as Modbus TCP devices, printers, and scanners via user-defined socket messaging.
Integrated Motion:Supports up to 2 axes of Integrated Motion on Ethernet/IP (CIP Motion) for basic positioning tasks.
