Siemens 6ES7314-6EH04-0AB0 SIMATIC S7-300 CPU 314C-2PN/DP Compact PLC 24DI/16DO 4AI/2AO PROFINET PROFIBUS

Basic Specifications

• Brand: Siemens
• Model: 6ES7314-6EH04-0AB0 (CPU 314C-2PN/DP)
• Series: SIMATIC S7-300 (Compact CPU)
• Power Supply: Integrated 24V DC (19.2~28.8V), 850mA rated, ~14W loss
• Work Memory: 192KB (~64K instructions); Retentive Memory: 64KB
• Load Memory: Micro Memory Card (MMC, up to 8MB, required)
• Integrated I/O:
  • 24×DI (24V DC, reverse polarity protection)
  • 16×DO (24V DC, 0.5A/channel, transistor)
  • 4×AI (±10V/0–20mA, 13-bit resolution)
  • 2×AO (±10V/0–20mA)
  • 1×Pt100 temperature sensor input
• High-Speed Counters: 4 channels, up to 60kHz; 4×2.5kHz pulse outputs
• Processing Speed: Bit 0.06μs, Word 0.12μs, Fixed-point 0.16μs, Floating-point 0.59μs
• Communication:
  • MPI/PROFIBUS DP (master/slave, 12Mbps max)
  • PROFINET IO (2-port switch, real-time Ethernet)
• Protection Class: IP20
• Temperature: -25°C ~ +60°C (operation)
• Certification: CE, UL, RoHS, CSA, FM
• Dimensions (W×H×D): 120 × 125 × 130mm; Weight: ~0.73kg
• Mounting: DIN rail; Connector: 2×40-pin front connectors (required)

Control & Interface

• Programming: STEP 7 V5.5+SP1 / TIA Portal, ladder/FBD/STL
• Onboard I/O: Combined digital/analog I/O for direct connection of sensors, valves, and transmitters
• Communication:
  • MPI: For programming, HMI, and S7-300 networking
  • PROFIBUS DP: For distributed I/O (ET200) and legacy devices
  • PROFINET: For real-time Ethernet, IO devices, and IoT connectivity
• Expansion: Up to 31 modules (signal/function) via S7-300 rack/IM360/361
• Data Logging: MMC for non-volatile storage (≥10yrs data retention)

Features & Benefits

• All-in-one compact design (CPU+I/O+comms+power) saves cabinet space
• Rich integrated I/O (digital+analog+temperature) reduces external modules
• 4×60kHz high-speed counters for precision counting, frequency measurement, and positioning
• Dual communication (PROFINET+PROFIBUS) enables flexible network integration
• Integrated 24V DC power reduces external PSU cost and wiring
• MMC-based load memory (no battery, maintenance-free)
• Fast processing (0.06μs bit) handles real-time tasks efficiently
• S7-Block Privacy encryption protects program integrity

Applications

• Packaging machinery (counting, filling, sealing, labeling)
• Material handling (conveyors, lifting, sorting, warehousing)
• Process control (water treatment, HVAC, energy management)
• Test benches and measurement systems
• OEM equipment and machine building
• Retrofit of legacy S7-300 systems with Ethernet upgrade