Siemens SIMATIC S7-300 CPU 314C-2 PtP Compact PLC – 6ES7314-6BH04-0AB0

The Siemens SIMATIC S7-300 CPU 314C-2 PtP (6ES7314-6BH04-0AB0) is a compact programmable logic controller designed for industrial automation, machine control, and process monitoring applications. It integrates CPU processing, digital and analog I/O, temperature measurement capability, high-speed counters, and serial communication in a single compact unit.

With 192 KB of work memory, 24 digital inputs, 16 digital outputs, four analog inputs, two analog outputs, and a dedicated Pt100 temperature input, this controller supports a wide range of automation tasks. Four integrated high-speed counters, with frequencies up to 60 kHz, make it suitable for applications involving pulse counting and fast signal processing.

The integrated MPI interface and RS485 point-to-point communication interface support connection to compatible Siemens programming devices, operator panels, and serial industrial equipment.

Technical Specifications

• Brand: Siemens

• Product Family: SIMATIC S7-300

• Product Type: CPU 314C-2 PtP Compact CPU

• Part Number: 6ES7314-6BH04-0AB0

• 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

• Communication Interfaces: MPI and integrated RS485 for PtP communication

• Rated Supply Voltage: 24 V DC

• Permissible Supply Voltage: 19.2–28.8 V DC

• Rated Current Consumption: Approximately 660 mA

• Firmware Version: V3.3

• Hardware Version: 01

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

• Front Connector: 2 × 40-pin connectors

• Programming Software: STEP 7 V5.5 SP1 or later, or STEP 7 V5.3 SP2 with HSP 204

• Product Lifecycle: Listed by Siemens as a spare part with product cancellation status

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 for machine control.

• Four analog inputs and two analog outputs for compatible process signals.

• Integrated Pt100 temperature measurement input.

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

• MPI and RS485 point-to-point communication.

• Integrated 24 V DC power supply.

• Designed for existing SIMATIC S7-300 automation installations.

Typical Applications

• Industrial machine automation

• Production and assembly lines

• Temperature monitoring and control

• Analog signal acquisition and output control

• High-speed pulse counting

• Serial communication with compatible devices

• Maintenance and replacement of existing S7-300 systems

Compatibility and Installation

Confirm the existing PLC configuration, analog signal requirements, Pt100 sensor wiring, serial communication settings, STEP 7 software version, and required Micro Memory Card before ordering. The CPU 314C-2 PtP uses an RS485 point-to-point interface; it should not be confused with the CPU 314C-2 DP, which has a PROFIBUS DP interface.

Availability Notice

Siemens lists this product as a spare part and shows a product cancellation lifecycle status. Confirm current stock, condition, warranty, and replacement compatibility with the supplier before purchasing.