1756-L81E
Buying 1756-L81E from Flexa Systems
Buy the Allen-Bradley 1756-L81E ControlLogix 5580 PLC brand new and in stock, with refurbished units available on request, or send yours to Flexa Systems for repair. As a ControlLogix 5580 controller, the 1756-L81E runs the logic for the machine or line it sits in, so a failed unit usually halts that process until a replacement is commissioned. Before the swap, keep a current backup of the controller program and note the firmware revision on the unit coming out, because the replacement must run a revision your project supports. Every 1756-L81E is tested before it ships and carries a 2-year warranty, and a refurbished unit can cost 30-60% less than brand new.
Repair option: send in your faulty unit for component-level repair — $2,560.00 with free diagnostics, a 2-year warranty, and a 5–30 business day turnaround. Repair typically costs 40–70% of a new unit, saving you 30–60%. Learn more about our ControlLogix repair and PLC repair service.
1756-L81E at a glance
| Part Number: | 1756-L81E |
| Manufacturer: | ALLEN BRADLEY |
| Type: | CONTROLLOGIX 5580 |
| Memory: | 3 MB user memory |
| Communication: | EtherNet/IP |
| Software: | Studio 5000 |
1756-L81E FAQ
What should I match before swapping in a replacement 1756-L81E?
Match the firmware revision of the original controller to the revision your project file targets, and download your latest program backup to the new unit. Confirm that the label reads 1756-L81E so your ControlLogix 5580 project opens without changing the controller type.
Is a refurbished or brand new 1756-L81E the better buy?
Brand new units are in stock and suit a line-down replacement. Refurbished units are available on request and are a practical choice for a shelf spare or a budget-limited ControlLogix 5580 upgrade.
Can I trade in a failed 1756-L81E?
Yes. Use the Trade-In button on this page for a free evaluation, and the credit is applied toward your purchase.
Compatible alternatives
Equivalent units from other manufacturers — all in-stock at Flexa, covered by the same 2-year warranty.
