Allen-Bradley 1769-L30ER is a mid-tier CompactLogix 5370 programmable controller with dual EtherNet/IP ports and DLR ring network function. Equipped with 1MB user memory, it supports up to 8 local I/O modules and 16 EtherNet/IP nodes, delivering stable integrated logic and motion control for medium-sized automated machinery and factory retrofit projectsRockwell A....

Core Technical Parameter Specifications

• Controller Series：CompactLogix 5370 L3 mid-range CPU
• User Program Memory：1MB program & data storage
• Local I/O Capacity：Max 8 sets of 1769 Compact I/O modules
• Network Interface：Dual RJ45 EtherNet/IP, support DLR linear/ring topology
• Max EtherNet/IP Nodes：16 network slave devices
• SD Storage：1GB standard SD card, expandable to 2GB
• Programming Port：Front USB for temporary program download
• Motion Support：CIP Motion Lite for multi-axis synchronized control
• Operating Temperature：0℃ ~ +60℃ continuous industrial operation
• Certifications：UL, CSA, CE global industrial compliance

Dual-Port DLR Network & Integrated Control Performance

AllenBradley 1769-L30ER dual Ethernet ports build redundant DLR network loops to eliminate single-point communication failure, greatly boosting production line network stability compared to single-port controllers. It runs unified Studio 5000 Logix Designer programming, unifying logic, motion and HMI data configuration on one platform. The 1MB memory meets complex sequential control, batch processing and light multi-axis motion demands. Built-in tag-based data architecture simplifies cross-device data sharing and fault diagnosis. Front panel LED indicators clearly display network, power and runtime status for rapid on-site troubleshooting.

System Expansion & Legacy Equipment Retrofit Compatibility

AllenBradley 1769-L30ER matches all digital, analog and communication 1769 I/O modules, freely combining high-density input/output, RTD, ASCII and EtherNet adapters to build customized control racks. It serves as a cost-effective replacement for outdated L32E/L35E controllers during factory upgrades, retaining original backplane layout without cabinet modification. Native EtherNet/IP open protocol enables seamless data exchange with third-party sensors, drives and touch panels, adapting to hybrid-brand automation reconstruction and distributed I/O networking architectures.

Industrial Application Scenarios

AllenBradley 1769-L30ER is widely adopted by machinery OEMs and discrete manufacturing plants, including automated assembly lines, packaging equipment, material handling systems and medium batch production monitoring. North American equipment manufacturers deploy it for standardized machine control with redundant network requirements. Latin American food processing factories use the controller for stable batch logic and temperature closed-loop control. European automation projects rely on its compact size and DLR network to reduce production downtime caused by network faults.