Siemens 6ES7 317-2AJ10-0AB0 Central Processing Unit

Siemens 6ES7317-2AJ10-0AB0 CPU 317-2DP is a SIMATIC S7-300 central processing unit designed for DP-enabled PLC systems. It provides 512 KB of work memory and two communication interfaces: the first port is MPI/DP at 12 Mbit/s for standard fieldbus connections, and the second is a DP master/slave interface for distributed I/O networks. The module requires a Micro Memory Card (MMC) for program and data storage, aligning with the S7-300 design that uses MMC cards for firmware and project data. As a CPU 317-2DP, it integrates into the S7-300 backplane ecosystem, supporting ladder logic and other Siemens programming languages for mid-range automation tasks. Typical applications include machine control, packaging lines, and automated assembly where DP communications to remote I/O modules streamline configuration and monitoring. This exact part number is listed as no longer available by Siemens’ catalog, so current stock and support may vary by region and from third-party suppliers.