Siemens SIMATIC S7-300 CPU 314C-2 PN/DP Compact PLC – 6ES7314-6EH04-0AB0

The Siemens SIMATIC S7-300 CPU 314C-2 PN/DP (6ES7314-6EH04-0AB0) is a compact programmable logic controller designed for industrial automation, machine control, and process monitoring. It integrates CPU processing, digital and analog I/O, temperature measurement, high-speed counting functions, and multiple communication interfaces in one compact unit.

With 192 KB of work memory, 24 digital inputs, 16 digital outputs, four analog inputs, two analog outputs, and one integrated Pt100 temperature input, this controller supports a variety of control and monitoring tasks. Four integrated high-speed counters support frequencies up to 60 kHz.

The CPU features an MPI/PROFIBUS DP interface and a PROFINET Ethernet interface with an integrated two-port switch, supporting communication with compatible Siemens controllers, operator panels, and distributed I/O devices.

Technical Specifications

• Brand: Siemens

• Product Family: SIMATIC S7-300

• Product Type: CPU 314C-2 PN/DP Compact CPU

• Part Number: 6ES7314-6EH04-0AB0

• Work Memory: 192 KB

• Digital Inputs: 24

• Digital Outputs: 16

• Analog Inputs: 4

• Analog Outputs: 2

• Temperature Measurement: 1 integrated Pt100 input

• High-Speed Counters: 4, up to 60 kHz

• First Communication Interface: MPI/PROFIBUS DP, up to 12 Mbps

• Second Communication Interface: PROFINET Ethernet with integrated two-port switch

• Rated Supply Voltage: 24 V DC

• Permissible Supply Voltage: 19.2–28.8 V DC

• Rated Current Consumption: 850 mA

• Typical No-Load Current: 190 mA

• Typical Power Loss: 14 W

• Firmware Version: V3.3

• Hardware Functional Status: 01

• Front Connectors: 2 × 40-pin

• Memory Card: Siemens Micro Memory Card (MMC) required

• Maximum MMC Capacity: 8 MB

• Programming Software: STEP 7 V5.5 or later with HSP 191

• Product Lifecycle: Spare part; phase-out announced

Key Features

• Compact PLC with integrated digital and analog I/O.

• 192 KB work memory for automation programs.

• 24 digital inputs and 16 digital outputs.

• Four analog inputs, two analog outputs, and a Pt100 temperature input.

• Four high-speed counters supporting up to 60 kHz.

• MPI/PROFIBUS DP communication and PROFINET Ethernet connectivity.

• Integrated two-port Ethernet switch.

• Integrated 24 V DC power supply.

• Designed for industrial automation and existing SIMATIC S7-300 installations.

Typical Applications

• Industrial machine automation

• Production and assembly lines

• Distributed I/O control

• Temperature monitoring and process control

• Analog signal acquisition and output control

• High-speed pulse counting

• PROFINET-based industrial communication

• Maintenance and replacement of existing S7-300 systems

Compatibility and Installation

Before purchasing, verify the existing PLC configuration, PROFINET and PROFIBUS network requirements, analog signal types, Pt100 sensor wiring, STEP 7 software compatibility, front connectors, and required Micro Memory Card. Confirm that the CPU 314C-2 PN/DP variant matches your application and existing hardware.

Availability Notice

Siemens lists this product as a spare part and indicates that product phase-out began on October 1, 2023. Confirm current stock, condition, warranty, and replacement compatibility with the supplier before ordering.