

The Siemens SIMATIC S7-300 CPU 313C-2 PTP (MLFB: 6ES7313-6BE01-0AB0) is a compact, high-performance CPU designed for mid-range automation applications requiring integrated I/O and versatile communication. This unit combines a powerful 32 KB working memory with onboard digital inputs and outputs, along with three 30 kHz high-speed counters, making it ideal for precise counting, positioning, and simple motion tasks. The integrated MPI interface allows seamless integration into SIMATIC networks, while the PTP (Point-to-Point) interface via RS485 enables direct communication with drives, printers, or barcode scanners. Engineered for reliability in harsh industrial environments, this CPU supports a wide 24 V DC power range (19.2–28.8 V) and requires an external MMC for load memory. Its programming environment, STEP 7 V5.5+ SP1 or higher, provides full access to a comprehensive set of organization blocks, timers, and counters. Below are the detailed technical specifications:
| Specification | Details |
|---|---|
| Product Type | Compact CPU with integrated I/O |
| Order Number (MLFB) | 6ES7313-6BE01-0AB0 |
| Power Supply | 24 V DC (19.2–28.8 V) |
| Working Memory | 32 KB |
| Load Memory | Requires Micro Memory Card (MMC) – max. 8 MB (depending on card) |
| Digital Inputs (DI) | 16 (24 V DC, type 1) |
| Digital Outputs (DO) | 16 (24 V DC, 0.5 A) |
| High-Speed Counters | 3 channels, 30 kHz each |
| Communication Interfaces | MPI (up to 187.5 kbps) + PTP (RS485, up to 38.4 kbps) |
| Programming Language | LAD, FBD, STL, SCL (via STEP 7) |
| Required Software | STEP 7 V5.5 + SP1 or higher |
| Program Blocks (max.) | DBs, FBs, FCs: limited by MMC capacity; OBs: OB1, OB10–OB17, OB20–OB23, OB30–OB38, OB40–OB47, OB80–OB88, OB100, OB121, OB122 |
| Timers / Counters | Unlimited (limited by RAM); retentive |
| Bit Operation Time | 0.1 µs (typical) |
| Word Operation Time | 0.2 µs (typical) |
| Floating-Point Math Time | 0.6 µs (typical) |
| Dimensions (W x H x D) | 80 x 125 x 130 mm (without connectors) |
| Weight | Approx. 280 g |
| Ambient Temperature | 0 °C to +60 °C (horizontal installation) |
| Protection Class | IP20 |
| Certifications | CE, cULus, FM, ATEX (Zone 2) |

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