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1769-L24ER-QB1B – CompactLogix 5370 controller
1769-L24ER-QB1B is a current Allen-Bradley CompactLogix 5370 controller (Rockwell lifecycle status: Active Mature, read on 30 October 2026). It replaces 1 discontinued catalog number in TDL's end-of-life lookup. TDL quotes 1769-L24ER-QB1B as a spare or as part of a replacement, and carries out the change on site: configuration, program changes where needed, and testing.
| Catalog number | 1769-L24ER-QB1B |
|---|---|
| Rockwell description | CompactLogix 5370 L2 Controller, 2 EtherNet/IP ports with Device Level Ring Capability, 750KB Memory, 16 DC Inputs, 16 DC Outputs, Up To 4 1769 I/O Expansion Modules, 8 EtherNet/IP and 120 TCP Connections, 24V DC Input Embedded Power Supply, With 1GB SD Card, Can Support Up To 2GB SD Card, 1 USB Port |
| Rockwell lifecycle status | Active Mature — still sold and fully supported; Rockwell has a newer product family (read on 30 October 2026) |
| Product family | CompactLogix 5370 controller |
| Rockwell technical documents | 1769-TD005, 1769-SG001, 1769-UM021 |
Discontinued parts this catalog number replaces
| Discontinued part | Product | Lifecycle | Basis |
|---|---|---|---|
| 1769-L23E-QB1B | Legacy CompactLogix Controller 1769-L23E-QB1B | Discontinued 30/09/2016 | named by Rockwell |
Migration notes
- Rockwell names 1769-L24ER-QB1B as the replacement (Engineering Replacement).
- Replacements for the 1768-L43/L45 and 1769-L31 controllers follow the equivalence table in 1769-SG003A (p.14). For the 1768-ENBT, 1768-CNB and 1768-CNBR modules the Rockwell pages name no replacement; the replacement follows the new controller.
Lifecycle status changes over time: confirm the current status on the Rockwell product page or in the Product Compatibility and Download Center before ordering.
Related technical articles
- Upgrade Paths for Legacy Allen-Bradley Systems: SLC 500, MicroLogix, 1768, PanelView, FLEX I/O, ControlNet
- CompactLogix 1769-L31, L32E, L35E, L23E end of life — migration path to 5370/5380
Related services: Lifecycle review and spare parts Rockwell Automation upgrades CompactLogix in TDL Projects
Other current parts in this family
Sources
- Rockwell Automation, Rockwell product page 1769-L24ER-QB1B — read on 30 October 2026
- TDL, End-of-life lookup: 1769-L23E-QB1B