Siemens 6ES7315-2AH14-0AB0 SIMATIC S7-300 CPU 315-2DP PLC 256KB MPI PROFIBUS DP

Basic Specifications

• Brand: Siemens
• Model: 6ES7315-2AH14-0AB0 (CPU 315-2DP)
• Series: SIMATIC S7-300 (Standard CPU)
• Power Supply: Integrated 24V DC (19.2~28.8V), 850mA rated, ~4.5W loss
• Work Memory: 256KB (~85K instructions); Retentive Memory: 64KB
• Load Memory: Micro Memory Card (MMC, up to 8MB, required)
• Communication:
  • MPI (RS-485): For programming, HMI, and S7-300 networking
  • PROFIBUS DP: Master/slave, 12Mbps max, supports 32 DP slaves
• Processing Speed: Bit 0.1μs, Word 0.2μs, Fixed-point 0.25μs, Floating-point 0.45μs
• I/O Capacity: Up to 256 modules (digital/analog), max 16384 DI/DO or 1024 AI/AO
• Protection Class: IP20
• Temperature: 0°C ~ +60°C (operation); -25°C ~ +70°C (storage)
• Certification: CE, UL, RoHS, CSA, FM
• Dimensions (W×H×D): 40 × 125 × 130mm; Weight: ~0.33kg
• Mounting: DIN rail; Connector: 1×40-pin front connector (required)
• Product Status: Phase-out since Oct 1, 2023 (replacement: 6ES7315-2EH14-0AB0)

Control & Interface

• Programming: STEP 7 V5.5+SP1 / TIA Portal, ladder/FBD/STL
• Communication:
  • MPI: Connect up to 125 nodes, 187.5kbps max
  • PROFIBUS DP: Real-time distributed I/O, motion control, and device networking
• Expansion: Up to 4 racks (IM360/361), 31 modules per rack
• Data Logging: MMC for non-volatile storage (≥10yrs data retention)

Features & Benefits

• 256KB memory handles complex programs and data-intensive tasks
• Dual DP/MPI interfaces enable flexible network architecture and device connection
• High processing speed (0.1μs bit) ensures reliable real-time control
• Modular expansion supports large-scale I/O and system scalability
• Integrated 24V power reduces external PSU cost and wiring
• Battery-free MMC for maintenance-free data storage

Applications

• Automotive assembly lines (body, paint, final assembly)
• Packaging machinery (high-speed, multi-axis control)
• Material handling (warehousing, sorting, conveyor systems)
• Process control (water treatment, HVAC, energy management)
• General machinery and OEM equipment
• Retrofit of legacy S7-300 systems