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The Siemens 6ES7315-2FJ14-0AB0 is a failsafe central processing unit for the SIMATIC S7-300 series. This controller meets the needs of safety-critical automation applications. It combines standard and safety-related program execution. Therefore, it serves diverse industrial sectors, from manufacturing to process engineering.
Technical Specifications
The Siemens 6ES7315-2FJ14-0AB0 contains 512 KB of integrated work memory for user programs and data. This powerful CPU processes binary instructions within 50 ns and floating-point math in 450 ns. It weighs approximately 0.34 kg and measures 130 x 125 x 40 mm. The unit operates on a 24 V DC supply with a permissible range from 20.4 V to 28.8 V. Its typical power loss is 4.65 W. During a mains failure, it stores energy for up to 5 ms. A Micro Memory Card is essential for operation.
Key Technical Data
| Parameter | Specification |
|---|---|
| Product Type | SIMATIC S7-300 CPU 315F-2 PN/DP |
| Work Memory | 512 KB |
| Processing Speed (Bit) | 50 ns |
| Processing Speed (Float) | 450 ns |
| Interfaces | MPI/DP (12 Mbit/s) + PROFINET (2-port switch) |
| Supply Voltage | 24 V DC (20.4 V to 28.8 V) |
| Current Consumption (Rated) | 750 mA |
| Power Loss (Typical) | 4.65 W |
| Dimensions (W x H x D) | 40 x 125 x 130 mm |
| Weight | Approx. 0.34 kg |
| Safety Integrity | SIL 3 (IEC 61508), PL e (ISO 13849) |
Communication and System Integration
The Siemens 6ES7315-2FJ14-0AB0 features two built-in interfaces for flexible networking. The first interface is a combined MPI/DP port that supports 12 Mbit/s communication. This port can connect up to 16 partners, including programming devices and HMIs. The second interface is a PROFINET port with an integrated 2-port switch for Ethernet communication. This design supports both S7 communication and open TCP/IP protocols. Consequently, the controller easily integrates into existing automation networks.
Failsafe Features and Safety Applications
This CPU delivers exceptional safety performance for demanding applications. It supports safety integrity levels up to SIL 3 (IEC 61508) and PL e (ISO 13849). The unit enables connection to distributed failsafe I/O modules via PROFIsafe. It also handles up to 32 modules in a four-tier configuration for flexible system expansion. A diagnostic buffer stores the last 500 error events for efficient troubleshooting. Furthermore, the controller provides password protection and offers non-volatile data backup.