Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L33ER |
| Brand | Allen-Bradley |
| Product Type | Programmable Automation Controller |
| Controller Platform | CompactLogix 5370 L3 |
| User Memory | 2 MB |
| Maximum Local I/O Modules | 16 |
| I/O Expansion Banks | Up to 3 banks total |
| Communication Interfaces | USB, Ethernet |
| Ethernet Protocol | EtherNet/IP |
| Ethernet I/O Nodes | Up to 32 |
| Memory Card Slot | SD card |
| Mounting | DIN rail or panel |
| Enclosure Type | Open style |
| Operating Temperature | 0 to 60 deg C (32 to 140 deg F) |
| Weight | 0.5 kg |
| Estimated Shipping Dimensions | 19 x 17 x 9.5 cm |
| Country of Origin | USA (as supplied) |
| HS Code | 8537101190 |
| Series | A and B (as supplied) |
Controller Memory and Communication
The 2 MB user memory stores the controller program and associated project data. The Ethernet interface supports EtherNet/IP communication with compatible network devices, while the USB port provides a local connection for controller access and programming.
The controller supports up to 32 EtherNet/IP nodes. It also has an SD card slot for nonvolatile memory functions. The controller’s documented configuration includes dual Ethernet capability with Device Level Ring (DLR) support; confirm the physical port arrangement on the unit before installation.
Local I/O Expansion
The 1769-L33ER supports up to 16 local Compact I/O expansion modules across a maximum of three I/O banks, including the local bank. This configuration allows the controller to manage distributed input and output points within a local CompactLogix system. The selected I/O modules, power supplies, and expansion cables must match the system layout.
Frequently Asked Questions
Q: How much memory does the 1769-L33ER provide?
A: The controller provides 2 MB of user memory. This capacity is separate from the optional SD card storage.
Q: How many local I/O modules can the 1769-L33ER support?
A: It supports up to 16 local Compact I/O expansion modules across up to three I/O banks. The actual configuration depends on the selected modules and expansion hardware.
Q: Which communication interfaces are available?
A: The controller provides USB and Ethernet connectivity. Ethernet supports EtherNet/IP communication, including connections to compatible industrial network devices.
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