The Siemens 6ES7315-2AG10-0AB0 serves as the CPU 315-2DP central processing unit for the SIMATIC S7-300 automation system, delivering robust performance for mid-range applications like process control, manufacturing lines, and building automation. Equipped with 128KB integrated work memory for programs and data, it requires a Micro Memory Card (up to 8MB) for load memory and retentive data management. It features two RS485 interfaces: the first for MPI (up to 12 Mbit/s, 16 connections) supporting PG/OP communication, routing, and global data; the second as PROFIBUS DP master/slave (up to 12 Mbit/s, 32 masters, 124 slaves).
With an integrated 24V DC power supply (20.4-28.8V range, 0.8A typical current), it supports up to 4 racks (8 modules each), 1024 blocks (DB/FC/FB/OB), 256 timers/counters, and process image of 128 bytes I/O each. Fast execution times—0.1 µs bit, 0.2 µs word, 2 µs fixed-point math—ensure real-time reliability, backed by a hardware clock (6 weeks backup), 2048 byte flags (MB0-15 retentive preset), and comprehensive diagnostics. Housed in a compact 40x125x130mm enclosure (290g, IP20), it operates from 0°C to 60°C with typical 2.5W power loss, certified for industrial durability.
