Bell and Howell CS-538-000B CPU Board For Programmable Logic Controller

Bell & Howell CS-538-000B CPU Board Rev. 2 is the central processing module for Bell & Howell programmable logic controllers. In supplier listings it appears as CS-538-000B with Rev. 2 and is cross-referenced under alternate assembly numbers such as 7002056, sometimes shown as 7002056-1, with several sources labeling the board LS-REV.2 to indicate the same revision. This PCB functions as the CPU within legacy Bell & Howell PLC systems and is commonly offered for repair, replacement, or refurbishment of older automation equipment. The CS-538-000B designation identifies a specific CPU board within the CS-538 family, and the Rev. 2 labeling helps match it to compatible catalogs and backplane configurations used in Bell & Howell control architectures. Third‑party vendors and marketplaces frequently list this part as a used or remanufactured Bell & Howell PLC component, reflecting its role in sustaining legacy installations that rely on CS-538-based hardware.