The 1769-L36ERM (1769-L36ERM) is a high-performance controller within the Allen Bradley CompactLogix 5370 L3 family, specifically engineered for applications requiring integrated motion control over EtherNet/IP. This CPU is a powerful solution for mid-size systems, offering the ability to synchronize up to 8 axes of motion without the need for dedicated motion modules.
Equipped with 3 MB of user memory and dual Ethernet ports, the 1769-L36ERM (1769-L36ERM) supports flexible network topologies such as Device Level Ring (DLR), linear, and star. The DLR capability is particularly critical for industrial resiliency, as it allows the network to maintain communication even if a single point in the ring is severed. Furthermore, the controller features a battery-less design; it utilizes an internal energy storage module to flash volatile memory to the included 1 GB SD card during power-loss events, significantly reducing long-term maintenance costs.
The following specifications define the hardware capabilities and networking limits of the 1769-L36ERM processor:
Manufacturer: Rockwell Automation / Allen Bradley
Model Number: 1769-L36ERM
Series: CompactLogix 5370 L3
User Memory: 3 MB (Volatile)
Non-Volatile Storage: 1 GB SD Card (1784-SD1 included)
Integrated Motion axes: Supports up to 8 axes on EtherNet/IP
EtherNet/IP Nodes: Max 48 nodes
Communication Ports: 2 x 10/100 Mbps Ethernet ports; 1 x USB 2.0 (Configuration/Firmware)
Local I/O Expansion: Up to 30 1769 Compact I/O modules
Expansion Banks: 3 Maximum (Requires I/O expansion cables)
Network Topologies: Device Level Ring (DLR), Linear, Star
Programming Software: Studio 5000 Logix Designer
Energy Storage Module: Internal (No battery required)
Power Supply Compatibility: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
Operating Temperature: 0–60 °C (32–140 °F)
Weight: 0.31 kg (0.68 lb)
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