Product Overview

The Allen-Bradley 1756-L60M03SE is a specialized high-performance processor within the ControlLogix® 5560 family, engineered to unify standard control, safety functions, and high-precision motion synchronization. This multi-discipline controller features 750 KB of user memory and is uniquely equipped with an integrated 3-axis SERCOS interface. This hardware-integrated motion capability allows for deterministic, high-speed coordination of servo drives directly from the CPU, making it a premier choice for complex packaging, assembly, and specialized machine control applications.

As a GuardLogix® capable component, the 1756-L60M03SE is designed to operate in systems requiring SIL 3 and PLe safety ratings when paired with a safety partner module. It provides a seamless environment where safety and standard control logic coexist on a single platform, significantly reducing hardware footprint and simplifying cross-platform communication.

Advanced Motion and Kinematics Integration

The 1756-L60M03SE excels in motion-centric environments by providing a dedicated SERCOS (Serial Real-time Communication System) interface that ensures jitter-free synchronization.

• SERCOS Motion Control: Features built-in support for 3 axes of integrated motion over fiber-optic SERCOS links, providing high immunity to electrical noise and high-speed update rates for servo loops.

• Feedback Compatibility: The controller manages various feedback types through compatible modules, including absolute Encoders, SSI inputs, and LDT (Linear Displacement Transducer) signals.

• Multi-Axis Coordination: Supports complex motion profiles, including electronic gearing, camming, and multi-axis interpolation for both stepper and servo motor systems.

• Drive Versatility: In addition to SERCOS motion, the module can coordinate AC and DC Variable Frequency Drives (VFDs) via analog outputs or networked protocols like DeviceNet.

Technical Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)

• Model Number: 1756-L60M03SE

• Processor Type: Logix5560 with Integrated Motion

• User Memory: 750 KB

• I/O Memory: 478 KB

• Integrated Motion: 3-Axis SERCOS Interface

• Communication Port: Integrated RS-232 Serial (9-pin D-shell)

• Controller Connections: Up to 250 simultaneous connections

• Backplane Current: 1200 mA @ 5.1V DC; 14 mA @ 24V DC

• Power Dissipation: 3.5 Watts

• Dimensions: 3.5 x 14.0 x 14.5 cm

• Weight: 0.38 kg (0.84 lbs)

Programming and Network Connectivity

The 1756-L60M03SE follows strict IEC 61131-3 compliance, allowing developers to utilize a variety of programming styles within the Studio 5000 Logix Designer® environment, including Ladder Diagram (LD), Structured Text (ST), and Function Block Diagram (FBD).

• Extensive Protocol Support: The onboard serial port and optional bridge modules enable connectivity via EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus (DH+), and Remote I/O.

• Legacy and Specialized Serial: Supports DF1 (Full/Half Duplex), DH-485, and ASCII for barcode integration, as well as Modbus RTU through user-defined logic.

• Distributed Architecture: Effortlessly bridges to distributed I/O platforms such as FLEX™ I/O and POINT I/O™, allowing for centralized control of geographically dispersed field devices.

• System Scalability: Designed for high-availability systems, it supports controller-to-controller interlocking and producer/consumer data models for efficient network bandwidth utilization.