Overview
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L33ERMS |
| Spare Model | 1769L33ERMS |
| Brand | Allen-Bradley |
| Product Type | Compact GuardLogix Controller |
| Controller Platform | Compact GuardLogix 5370 |
| Standard User Memory | 2 MB |
| Safety Memory | 1 MB |
| Local I/O Modules | Up to 16 |
| I/O Expansion Banks | Up to 3 |
| Ethernet Communication Ports | 2 EtherNet/IP ports |
| USB Interface | 1 Type B USB 2.0 port |
| Ethernet Data Rate | 10 Mbps / 100 Mbps |
| USB Data Rate | 12 Mbps |
| Maximum Motion Axes | 8 |
| Controller Tasks | 32 |
| Programs per Task | Up to 1,000 |
| Maximum Connections | 256 |
| Network Nodes | 32 |
| Manufacturer | Allen-Bradley |
| Country of Origin | USA |
| Weight | 0.7 kg |
| Estimated Shipping Dimensions | 18 x 12.8 x 12 cm |
| Tariff Code | 8537101190 |
Controller Architecture and Communication
The controller combines standard programmable control with integrated safety functionality in a Compact GuardLogix platform. Its two EtherNet/IP ports support industrial network communication, while the USB Type B interface provides a separate connection for supported programming and configuration tasks. The listed Ethernet rates are 10 Mbps and 100 Mbps.
The controller supports up to 256 connections and 32 network nodes. These limits describe different aspects of communication capacity: connections represent configured communication relationships, while network nodes represent devices on the network. Actual capacity depends on the application configuration and communication requirements.
Motion Control and I/O Capacity
Integrated motion capability allows the controller to coordinate applications with up to 8 motion axes. Confirm the required drive interfaces, motion configuration, and application limits before selecting it for a specific machine.
The controller supports up to 16 local I/O modules and 3 expansion I/O banks. These limits help determine the required I/O architecture, but the final configuration must also account for module selection, power requirements, and the applicable system design.
Integrated Safety and Programming
The Compact GuardLogix architecture combines standard control and safety-related control functions. The listed 2 MB standard memory and 1 MB safety memory identify separate memory capacities; they should not be treated as one interchangeable memory pool.
The controller supports four programming languages: Ladder Diagram, Function Block Diagram, Structured Text, and Sequential Function Chart. This range allows application developers to select programming methods according to control logic and project requirements.
Frequently Asked Questions
Q: What is the difference between the 2 MB user memory and 1 MB safety memory?
A: The controller has separate capacities for standard application memory and safety-related application memory. The two figures represent distinct memory allocations rather than a single 3 MB general-purpose memory pool.
Q: How many motion axes can the 1769-L33ERMS support?
A: The supplied specifications list a maximum of 8 motion axes. Verify drive compatibility and application-specific motion requirements before finalizing the configuration.
Q: What communication interfaces are available?
A: The controller has two EtherNet/IP ports and one Type B USB 2.0 interface. The listed Ethernet communication rates are 10 Mbps and 100 Mbps, while the USB data rate is 12 Mbps.
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