1756-L72
Buying 1756-L72 from Flexa Systems
Buy the Allen-Bradley 1756-L72 ControlLogix 5570 PLC, available on request in brand new or refurbished condition, or send yours to Flexa Systems for repair. As the controller in a ControlLogix 5570 system, the 1756-L72 holds the logic that runs your machine or line, so a replacement must run the same firmware revision your project was built for. Note the revision on your current unit when you request a quote, and we will confirm which 1756-L72 options we can supply. Every unit is tested before it leaves Lewisville and carries a 2-year warranty, and refurbished units typically save 30-60% over new.
Repair option: send in your faulty unit for component-level repair — $1,410.00 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-L72 at a glance
| Part Number: | 1756-L72 |
| Manufacturer: | ALLEN BRADLEY |
| Type: | CONTROLLOGIX |
| Communication: | EtherNet/IP |
| Software: | RSLogix 5000, Studio 5000 |
1756-L72 FAQ
What should I match before swapping in a 1756-L72?
Match the firmware revision of the ControlLogix 5570 controller you are replacing to your project file. Back up the program from the existing processor, or locate your latest saved project, before removing it so you can download it to the new 1756-L72.
How do I get a 1756-L72 when none is in stock?
Please request a quote. Tell us whether you need brand new or refurbished and which firmware revision you need.
Can I trade in a failed 1756-L72 controller?
Yes. Use the Trade-In button on this page for a free evaluation, and any 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.




