Allen Bradley 1747-L531 Ser E 1747-OS302 Ser C SLC 500 5/03 CPU Processor 8K PLC
(Allen Bradley 1747OS302 1747-0S302 1747L531 SLC 500 Date Varies. 8K words total 4K words for data or prog) 4K words for data only). Surplus Unit Working Used 1747-L531 Ser E FRN Varies 1747-OS302 Ser C 1747-L531/E.