

The Siemens SIMATIC S7-300 CPU 314, specifically the 6ES7314-1AG13-0AB0 model, stands as a cornerstone for mid-scale industrial automation applications. Designed to bridge the gap between entry-level CPUs and high-end controllers, this unit delivers a balanced mix of processing power, memory capacity, and communication flexibility. Its robust 96 KB working memory and support for a wide range of program blocks make it an excellent choice for systems requiring precise control, such as in chemical processing or automated assembly lines. The CPU 314 is built to operate reliably in harsh environments, with a 24 V DC power supply and a built-in MPI port for straightforward integration into existing S7-300 racks. Whether you are upgrading a legacy system or designing a new control architecture, this CPU provides the performance and longevity expected from the SIMATIC family.
| Specification | Details |
|---|---|
| Product Model | 6ES7314-1AG13-0AB0 |
| Product Series | SIMATIC S7-300 |
| CPU Type | CPU 314 |
| Working Memory | 96 KByte |
| Load Memory | Requires Micro Memory Card (MMC); maximum size depends on MMC used (typically up to several MB) |
| Retentive Memory | Supported; preserves critical data blocks during power loss |
| Integrated Interfaces | 1 x MPI (Multi-Point Interface) for programming and communication |
| Power Supply | 24 V DC (19.2 V to 28.8 V range) |
| Power Protection | External protection recommended for supply cables |
| Programming Software | STEP 7 V5.5 + SP1 or higher (V5.2 + SP1 with HSP 218 also compatible) |
| Processing Speed (Bit Operation) | Approx. 0.1 μs |
| Processing Speed (Word Operation) | Approx. 0.2 μs |
| Processing Speed (Fixed-Point Arithmetic) | Approx. 0.5 μs |
| Processing Speed (Floating-Point Arithmetic) | Approx. 1.0 μs |
| Maximum Number of Data Blocks (DBs) | Limited by working memory; typically supports up to 1024 DBs |
| Maximum Number of Function Blocks (FBs) | Limited by working memory; typically supports up to 1024 FBs |
| Maximum Number of Functions (FCs) | Limited by working memory; typically supports up to 1024 FCs |
| Organization Blocks (OBs) Supported | OB1 (cyclic), OB10-OB17 (time-of-day interrupts), OB20-OB23 (time-delay interrupts), OB30-OB38 (cyclic interrupts), OB40-OB47 (hardware interrupts), OB80-OB87 (error handling), OB100 (startup), OB121 (programming errors), OB122 (I/O access errors) |
| S7 Counters (Retentive) | Unlimited; limited only by RAM capacity |
| S7 Timers (Retentive) | Unlimited; limited only by RAM capacity |
| Operating Temperature | 0°C to 60°C (horizontal installation); 0°C to 40°C (vertical installation) |
| Storage Temperature | -40°C to 70°C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Protection Class | IP20 |
| Dimensions (W x H x D) | Approx. 40 mm x 125 mm x 130 mm |
| Weight | Approx. 290 g |
| Shipping Weight | Approx. 0.5 kg (with packaging) |

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