Siemens 6ES7315-2EH14-0AB0 Simatic PLC CPU Module

The Siemens 6ES7315-2EH14-0AB0 is a SIMATIC S7-300 CPU 315-2 PN/DP central processing unit with 384 KB of working memory. It offers two communications interfaces: MPI/DP at 12 Mbps and a second Ethernet PROFINET interface with an integrated 2-port switch, and requires a Micro Memory Card (MMC) for program and data storage. The unit is powered from 24 V DC (20.4–28.8 V range) with a rated current of 750 mA (no-load ~150 mA; inrush ~4 A) and about 4.65 W typical power consumption. Firmware is V3.2, and programming is performed with STEP 7 V5.5 or higher. Isochronous mode is supported through PROFIBUS DP or PROFINET, enabling synchronized control in motion and other time-critical tasks. MMC supports up to 8 MB, with data management on MMC lasting at least 10 years after the last programming; MMC-based backup is maintenance-free. This CPU is designed for S7-300 racks and provides reliable control for industrial automation tasks requiring Ethernet connectivity alongside classic MPI/DP communication.