Siemens 6ES7 315-2AF03-0AB0 Programmable Logic Controller CPU Module

Siemens 6ES7315-2AF03-0AB0 is a SIMATIC S7-300 CPU315-2 DP central processing unit that combines a built‑in 24 V DC power supply, a compact CPU core, and Profibus DP connectivity in one DIN rail module. It provides 64 KB of work memory for running user programs and data blocks, enabling reliable control of mid‑range automation tasks. The model includes a second Profibus DP interface, enabling DP master and DP slave configurations and robust communication with distributed I/O and DP devices on the network. This CPU315-2 DP is designed for classic S7-300 installations and is commonly used to coordinate machine logic and field devices across a DP network. In terms of software integration, CPU 315‑2 DP functionality has been documented for STEP 7 (SIMATIC STEP 7) versions up to V5.x, reflecting its long‑standing role in older Siemens automation environments. The exact order number 6ES7315-2AF03-0AB0 confirms the DP variant and its 64 KB working memory footprint, distinguishing it from non‑DP CPU315 models. Typical applications include control of packaging lines, conveyors, and other machinery where a reliable PLC core must communicate with DP slaves and I/O blocks, while preserving local program execution and data storage on the CPU itself.