6ES7313-6CF03-0AB0 Siemens SIMATIC S7-300 CPU313C-2 DP CENTRAL PROCESSING UNIT DC24V

6ES7313-6CF03-0AB0 Siemens SIMATIC S7-300 CPU313C-2 DP CENTRAL PROCESSING UNIT DC24V

1.Overview of the 6ES7313-6CF03-0AB0 Siemens

The 6ES7313-6CF03-0AB0 is a compact CPU in the SIMATIC S7-300 family, officially designated as the CPU 313C-2 DP. It integrates a processor, memory, power supply, I/O, and PROFIBUS-DP interface into a single module, offering a highly cost-effective all-in-one solution for medium-complexity standalone or distributed control tasks. This CPU is suitable for distributed system architectures, enabling direct connection to field devices and distributed I/O units via PROFIBUS-DP. It can function as a local unit for fast pre-processing or as a high-level controller.

Powerful processing performance and memory capacity: This CPU features a high-efficiency microprocessor that processes binary instructions in as fast as 0.1 µs, ensuring fast program execution. It has 64 KB of integrated work memory, expandable up to 8 MB via a SIMATIC Micro Memory Card (MMC). This memory serves as program load memory and can also store complete project data (including symbols and comments).

Integrated I/O and Technology Functions: The module integrates 16 digital inputs and 16 digital outputs for direct connection to sensors and actuators. Additionally, it features three high-speed counters (up to 30 kHz), three-channel frequency measurement, and pulse-width modulation (PWM) functionality, enabling complex process tasks such as counting, speed measurement, and direct control of valves and heaters without the need for additional modules.

Flexible Communication Interfaces: The CPU 313C-2DP provides both MPI and PROFIBUS-DP interfaces.

The MPI interface supports up to eight connections to a programming device (PG), operator panel (OP), or other SIMATIC S7 series CPUs.

The integrated PROFIBUS-DP interface enables it to function as both a DP master and a DP slave, easily integrating it into distributed automation systems and enabling centralized configuration, addressing, and programming of distributed I/O.

Reliable Design and Diagnostics: The module supports password protection and block encryption, effectively preventing unauthorized program access and safeguarding intellectual property. Its diagnostic buffer can store up to 500 of the latest error and interrupt events for quick troubleshooting. At the same time, the maintenance-free data backup function can automatically write retentive data to the MMC card when the power is off, ensuring that data is not lost.

2.Core Features:

Hardware Specifications

Order Number: 6ES7313-6CF03-0AB0
Series: SIMATIC S7-300, Compact CPU
Dimensions: 40 × 125 × 117 mm / Approximately 250 g
Power Supply: 24 V DC (20.4…28.8 V DC)
Power Consumption: Typical 8 W, Maximum 12 W
Operating Temperature: 0…60°C, 95% relative humidity (non-condensing)

Memory

Work Memory: 32 KB (shared code and data)
Load Memory: Requires an MMC, supports up to 8 MB
Backup Method: Battery-free, all programs and data are stored on the MMC

Integrated I/O

Digital Inputs: 16 channels, 24 V DC, optically isolated, input delay adjustable from 0.1…32 ms
Digital Outputs: 16 channels, 24 V DC, 0.5 A, short-circuit proof, transistor source output
Analog I/O: None (expansion modules required)

High-speed processing

High-speed counters: 3 channels, 30 kHz, supports A/B quadrature
Frequency measurement: 0.1 Hz…30 kHz
Pulse outputs: 2 channels, 20 kHz, can be used for PTO/PWM or stepper/servo simple positioning

Communication interfaces

MPI: 1 × RS-485, 187.5 kbit/s, for programming/HMI
PROFIBUS-DP: 1 × RS-485, configurable as master or slave, maximum 12 Mbit/s
Maximum expansion: Up to 32 slaves when DP master, maximum 244 bytes of I/O per slave

Performance

Bit instruction: 0.1 µs
Word instruction: 0.2 µs
Floating-point instruction: < 1 µs
Scan cycle: Typically < 1 ms (1 KB instruction)

Integrated technology functions

PID controllers: 8 Supports closed-loop control of temperature, pressure, flow, and other functions.
Control Modes: Automatic, Manual, Safety, and Backup
Online Autotuning: Step response method allows for PID parameter optimization without specialized tools.
Adjustable Control Zone: Automatically switches into closed-loop control when the actual value enters the control zone; outside the zone, the value rapidly approaches the setpoint at maximum output.

Diagnostics and Maintenance

LED Indicators: RUN / STOP / SF / BF / DC5V
Remote Diagnostics: Supports online module diagnostics via PROFIBUS or MPI
Firmware Upgrade: Field upgrades are possible using MMC and STEP 7 without disassembling the device.

Programming Support

Languages: LAD, FBD, STL, SCL, Graph, CFC
Software: STEP 7 V5.5 or later or TIA Portal V12 or later
Block Types: OB, FB, FC, DB, SFB, SDB, maximum block length 32 KB

Typical Applications

Packaging Machine: High-speed counter + pulse output for length cutting and color mark capture
Conveyor Line: PROFIBUS-DP connection for distributed I/O and frequency converters provide multi-speed control.
HVAC: 16 DI/16 DO directly connects fans, valves, differential pressure switches, and PID constant temperature and pressure.
Teaching Equipment: Compact design and rich interfaces make it a standard model for university PLC labs.

Ordering and Accessories

Required: Micro Memory Card (≥ 64 KB, 6ES7 953-8LFxx-0AA0 recommended)
Front Connector: 40-pin, included in the box (6ES7 392-1AM00-0AA0)
Drawing Rail: S7-300 standard 35 mm DIN rail, optional length
Backup Power Supply: PS307 2 A / 5 A / 10 A optional

In a nutshell

The 6ES7313-6CF03-0AB0 combines 32 KB program capacity, 16 DI/16 DO, 30 kHz counter, 20 kHz pulse, PID closed-loop, and... The PROFIBUS-DP communication is fully integrated in the 40 mm wide module, making it an economical all-rounder in the S7-300 compact CPU that strikes a balance between cost and functionality.

Usage Notes: Required Memory Card: This CPU requires a SIMATIC Micro Memory Card (MMC) to operate. User programs are stored on the MMC. The CPU will not operate without the MMC.

3.Product details pictures

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