Allen-Bradley 1769-L33ER – Scalable EtherNet/IP Machine Controller | CompactLogix 5370 L3 Platform
Engineering Background
The Allen-Bradley 1769-L33ER is a member of Rockwell Automation’s CompactLogix 5370 L3 family — a generation of controllers engineered to deliver deterministic, high-throughput control in a compact DIN-rail form factor. Built on the Logix5000 firmware architecture, the 1769-L33ER shares a unified tag-based programming model with ControlLogix, GuardLogix, and SoftLogix, enabling seamless code portability and reduced engineering overhead across multi-platform installations. Its embedded dual-port EtherNet/IP switch eliminates the need for an external communication module, simplifying panel design and lowering total BOM cost.
Product Positioning
The 1769-L33ER is the preferred choice for OEM machine builders and system integrators requiring deterministic EtherNet/IP communication, Device Level Ring (DLR) fault-tolerant topology, integrated CIP Motion for up to 16 servo axes, and a 2 MB user memory footprint — all in a single controller slot. Konmask.com supplies this controller to B2B procurement teams requiring verified OEM traceability, pre-shipment inspection, and rapid international fulfillment with full export documentation.
Complete Technical Specifications
| Catalog Number | 1769-L33ER |
| Series | CompactLogix 5370 L3 |
| Platform | Logix5000 (Allen-Bradley / Rockwell Automation) |
| User Memory | 2 MB |
| I/O Capacity | Up to 16 local expansion modules (1769 Compact I/O) |
| Communication Ports | 2 × EtherNet/IP (embedded dual-port switch, linear / DLR ring topology) |
| USB Port | 1 × USB Type-B (programming / firmware update) |
| EtherNet/IP Data Rate | 10/100 Mbps, auto-negotiate, full/half duplex |
| DLR Support | Yes — Device Level Ring (media-redundant ring without managed switches) |
| Motion Control | Up to 16 axes — Integrated Motion on EtherNet/IP (CIP Motion) |
| Task Types | Continuous, periodic, event tasks |
| Programming Languages | Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Sequential Function Chart (SFC) |
| Power Supply | 1769-PA2 (120/240 VAC) or 1769-PB2 (24 VDC) — sold separately |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Enclosure Rating | IP20 (DIN-rail / panel mount) |
| Certifications | UL, CE, RCM, KC, EAC |
| Firmware | Logix5000 v20 and above (programmed via Studio 5000 Logix Designer) |
| Weight | Approx. 500 g |
| Dimensions (H × W × D) | 118 × 100 × 87 mm (approx.) |
| Mounting | DIN rail (EN 50022) or panel mount |
Proven Application Environments
- OEM Machine Control – Packaging lines, conveyor systems, pick-and-place, and assembly automation requiring deterministic scan times
- Process Control – Batch processing, water/wastewater treatment, chemical dosing, and HVAC control with continuous task execution
- Multi-Axis Motion – Coordinated servo control via Integrated Motion on EtherNet/IP (CIP Motion) with Kinetix 5500 / 5700 drives
- DLR Fault-Tolerant Networks – High-availability production cells using Device Level Ring topology without managed switches
- Distributed I/O Architectures – Remote 1734 POINT I/O and 1769 Compact I/O expansion over EtherNet/IP
- SCADA / MES Integration – FactoryTalk View SE/ME, Ignition, Wonderware via EtherNet/IP or OPC-UA gateway
- Food & Beverage / Pharmaceutical – Hygienic machine control with IEC 61131-3 structured programming and audit-trail capability
Engineering Advantages
- Unified Logix Platform – Single Studio 5000 programming environment across CompactLogix, ControlLogix, and GuardLogix families; tag-based addressing eliminates I/O mapping overhead
- Embedded Dual-Port EtherNet/IP – Eliminates the need for a separate 1769-AENTR adapter module, reducing BOM cost, panel footprint, and wiring complexity
- DLR Topology Support – Media-redundant ring networks with automatic fault recovery; no managed switches required
- Integrated CIP Motion – Up to 16 servo axes over EtherNet/IP; no dedicated motion bus or DSP module required
- 2 MB User Memory – Accommodates complex LD, FBD, ST, and SFC programs with large structured data tables and Add-On Instructions (AOIs)
- Compact DIN-Rail Form Factor – 1769 Compact I/O ecosystem; ideal for space-constrained control panels and machine-mounted enclosures
- Firmware Flexibility – Supports Logix5000 v20 and above; field-upgradeable via USB without hardware replacement
System Architecture & Signal Flow
The 1769-L33ER operates as the system controller within a 1769 Compact I/O backplane. Local I/O modules connect directly to the right of the controller via the 1769 bus connector. The embedded dual-port EtherNet/IP switch enables daisy-chain (linear) or DLR ring topologies connecting remote I/O adapters (e.g., 1734-AENT POINT I/O), servo drives (e.g., Kinetix 5500/5700), HMI panels, and upstream SCADA/MES systems — all on a single flat EtherNet/IP network segment. A USB Type-B port provides direct programming access independent of network availability.
Typical signal flow:
Studio 5000 Logix Designer (engineering workstation) → USB or EtherNet/IP → 1769-L33ER CPU → 1769 local I/O bus → field devices
Simultaneously: EtherNet/IP network → remote I/O adapters, CIP Motion servo drives, HMI panels, SCADA/MES historian
Sourcing & Quality Verification
- Origin: Genuine Rockwell Automation / Allen-Bradley OEM product
- Traceability: Each unit ships with original manufacturer labeling, date code, and serial number intact — no remarking or relabeling
- Condition: New-in-box (NIB) or factory-refurbished stock clearly indicated at time of quotation; mixed stock never shipped without disclosure
- Pre-Shipment Inspection: Functional power-on verification available on request; inspection report provided
- Documentation: Certificate of conformance and itemized packing list included with every shipment
- Anti-Counterfeit Policy: Konmask sources exclusively from authorized distributors and verified OEM channels — no gray-market, surplus remarked, or third-party refurbished parts without explicit disclosure
Procurement Process
- Submit RFQ – Contact [email protected] or call +0086 19859288691 with required quantity, target delivery date, and destination port
- Formal Quotation – Receive unit price, lead time, stock availability, and Incoterms within 1 business day
- Order Confirmation – Issue PO against the quotation; payment terms (T/T, L/C) available for qualified B2B accounts
- Quality Check & Packing – Pre-shipment inspection, ESD-safe anti-static packaging, and export documentation preparation
- Shipment & Tracking – DHL / FedEx / SF Express with full tracking; commercial invoice, packing list, and certificate of origin included
- After-Sales Support – Technical assistance, firmware compatibility guidance, and warranty claim coordination available post-delivery
Technical FAQ
Q: What is the difference between 1769-L33ER and 1769-L33ERM?
A: The 1769-L33ERM adds an integrated SD card slot for program backup and firmware storage. The 1769-L33ER does not include the SD slot but is otherwise functionally identical in CPU performance, memory, and communication capability.
Q: Can the 1769-L33ER control servo drives without an additional motion module?
A: Yes. It supports Integrated Motion on EtherNet/IP (CIP Motion) for up to 16 axes, compatible with Kinetix 5500 and Kinetix 5700 servo drives connected over the EtherNet/IP network — no dedicated motion bus or DSP card required.
Q: What Studio 5000 version is required?
A: Studio 5000 Logix Designer v21 or later is recommended for new projects. The controller firmware version must be equal to or lower than the Studio 5000 version used for programming.
Q: Is the 1769-L33ER compatible with RSLogix 5000?
A: Yes. RSLogix 5000 v20 and above supports this controller. Rockwell Automation recommends migrating to Studio 5000 Logix Designer for all new and ongoing projects.
Q: What power supply is required?
A: A 1769 series power supply is required — 1769-PA2 for 120/240 VAC input or 1769-PB2 for 24 VDC input — mounted immediately to the left of the controller on the 1769 bus. Power supply is sold separately.
Q: Does Konmask provide firmware update support?
A: Yes. We advise on firmware compatibility matrices and provide references to Rockwell’s firmware download portal. On-site or remote firmware update assistance is available by arrangement.
Q: What is the maximum number of local I/O modules?
A: The 1769-L33ER supports up to 16 local 1769 Compact I/O modules in a single bank, plus additional remote I/O over EtherNet/IP.
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Contact: [email protected] | +0086 19859288691
