Allen Bradley Control Logix CPU Logix5571. The item "Allen Bradley Control Logix CPU 1756-L71 Series B Brand New Un-packaged" is in sale since Friday, September 25, 2020. This item is in the category "Business, Office & Industrial\Industrial Automation & Motion Controls\PLCs & HMIs\PLC Processors". The seller is "softution" and is located in Bilston. This item can be shipped worldwide.