Siemens 6ES7313-6CF03-0AB0 Compact CPU

Familie de produse: SIMATIC S7-300 CPU compact, Întrerupt, spare parts available

Full English Name: SIMATIC S7-300, CPU 313C-2 DP Compact CPU with MPI, 16 DI/16 DO, 3 contoare de mare viteză (30 kHz), integrated DP interface

1. Codul modelului Explicația

6ES7: Siemens S7 automation system module

313: S7-300 CPU313 series

6C: Compact CPU with integrated I/O onboard

F: Identificatorul versiunii

03: Număr de revizie hardware

0AB0: Product version and packaging version

2. Specificații hardware de bază

3. Caracteristici funcționale
4. Integrated PROFIBUS-DP: Can act directly as DP master or slave without additional CP communication card. Suitable for distributed I/O, frequency converter and instrument networking. MPI is used for HMI and multi-CPU networking.
5. Onboard Technology Functions: Built-in high-speed counting, frequency acquisition, PWM pulse width modulation and closed-loop PID. No extra FM350 technology module required, ideal for packaging, conveying and small positioning equipment.
6. Compact Integrated Design: Onboard DI/DO reduces rack occupation, widely used for small-scale machines.
7. Maintenance-free: No backup battery. Programs, data and hardware configuration are fully stored on MMC.
8. Modele de înlocuire
9. Direct Upgrade Replacement: 6ES7313-6CG04-0AB0

Alocarea PIN, I/O definition and communication are fully compatible; working memory upgraded to 128KB, firmware V3.3. Direct hardware replacement for existing projects with minor configuration adaptation. It is the official spare part after CF03 discontinuation.

2. Legacy Compatible Model: 6ES7313-6CE01-0AB0. CF03 is the upgraded version of CE01 and supports downward compatible replacement.

Nota: The entire S7-300 series is gradually phased out. S7-1200 / S7-1500 is recommended for new projects.

5. Cod HS (Reference for Customs Declaration in Foreign Trade)

HS: 8537101190, Controler logic programabil (PLC). For pre-declaration reference only, subject to actual customs verification.

6. Instalare & Configuration Guidelines
7. MMC card is mandatory. The CPU cannot start without MMC. Damaged program on MMC will prevent CPU from entering RUN state.
8. Both ends of DP bus shall be fitted with terminating resistors. Termination switch is located on CPU DP port.
9. Onboard DI/DO: Digital input supports source type. Each transistor output point rated 0.5A, group total current limited by ambient temperature. Freewheeling diode is recommended in parallel for inductive loads.
10. Legare la pământ: Single-point earthing for rack and cable shield to avoid interference causing SF/BF alarms.
11. Depanare comună
12. SF red light steady on: System fault. Priority check: damaged MMC / program error, mismatched hardware configuration, backplane bus fault.
13. BF light flashing: PROFIBUS DP bus fault. Inspect DP cable, terminating resistor, disconnected slave station or address conflict.
14. All LEDs flashing after power-up: MMC damaged / missing MMC / corrupted program on MMC. Perform MRES reset test and retry with new MMC.
15. No output from onboard I/O: Transistor output burnt due to overcurrent. The integrated I/O of this CPU cannot be repaired separately; only CPU replacement available.
16. Acceptance Inspection Points for Second-hand Units
17. Aspect: No burn marks on housing, no corrosion on backplane, intact DP/MPI port, clear laser engraved serial number.
18. Power-on test: Use known good MMC card. Check RUN lamp after power on. Read CPU model, firmware version and diagnostic buffer online via STEP7.
19. Test de comunicare: Normal MPI communication. Fit terminating resistor on DP port and test DP bus communication.
20. I/O test: Force output signals and measure each 16DI/16DO channel with multimeter to verify no faulty points.
21. Backup: Read original project and back up programs inside MMC.
22. Scenarii tipice de aplicare

Mașini de ambalare, linii transportoare mici, PID control for fans & pompe de apa, auxiliary small metallurgy equipment, retrofitting of old production lines with distributed DP I/O, spare part replacement for existing S7-300 equipment.

6ES7313-6CF03-0AB0 (CPU313C-2 DP) Limbaje de programare acceptate

Programming Platform: STEP7 V5.3 SP2 or above (TIA Portal does NOT support this old firmware CPU)

✅ Standard Built-in Languages (Available in basic STEP7)

1. LAD (Diagrama de scară): Widely adopted in China, relay-style graphical logic
2. FBD (Diagrama blocului funcțional): Graphical programming with block wiring
3. STL (Statement List): Assembly-style textual instructions with high execution efficiency

✅ Optional Extended Languages (Requires STEP7 Professional add-on package)

1. S7-SCL (Limbajul de control structurat): Pascal-like high-level textual language for complex calculation and data processing
2. S7-GRAPH: Diagrama de funcții secvențiale (SFC), suitable for pipeline and sequential process control
3. S7-HiGraph: State machine graphical language for multi-state switching equipment (rar folosit)

Nota: C language is not supported. SCL ≠ C; CFC is exclusive for S7-400 and unavailable for this CPU.

Observații suplimentare

Multiple languages can be mixed within one project (de ex. FB programmed in SCL, OB1 in LAD)

After program download to CPU, the CPU does not recognize source language type; only compiled machine code is executed.

Built-in high-speed counting, PWM and PID technology function blocks can be called directly via SFB/SFC system function blocks; no extra language required.

6ES7313-6CF03-0AB0 (CPU313C-2 DP) Programming Languages & Câmpuri aplicabile

This CPU runs on STEP7 V5.x platform, supporting LAD, FBD, STL, S7-SCL and S7-GRAPH. Combined with onboard high-speed counter, PWM, PID and PROFIBUS-DP hardware features, each programming language fits different process scenarios as follows:

1. LAD Ladder Diagram

Caracteristici: Relay-style graphic circuit, easy to learn and intuitive for fault diagnosis, most popular among field engineers.

Câmpuri aplicabile

General sequential logic: Benzi transportoare, mașini de sortat, ventilator & pump start-stop interlock

Seturi complete de joasă tensiune, HVAC, small sewage control cabinets

Safety interlock, door control, oprire de urgență, basic DI/DO logic for sensors

Avantaj: High readability for on-site commissioning and maintenance technicians, first choice for simple I/O control.

2. FBD Function Block Diagram

Caracteristici: Graphical block wiring, oriented to control algorithms and suitable for continuous / control analogic.

Câmpuri aplicabile

Closed-loop PID control of temperature, presiunea si debitul (fani, cuptoare de încălzire, alimentare cu apă la presiune constantă)

Instrument data acquisition, analog signal processing, range conversion, alarm threshold judgment

Continuous regulation control of hydraulic and pneumatic circuits

3. STL Statement List

Caracteristici: Low-level instruction set, high execution efficiency, low memory footprint, supports complex pointers and indirect addressing.

Câmpuri aplicabile

Batch data processing, array/buffer operation, pointer addressing

Legacy program migration, high-speed logic with strict scan cycle requirements

Custom low-level function blocks, bit manipulation and register processing

Mostly used by senior developers; poor readability for on-site maintenance.

4. S7-SCL Structured Control Language (Pascal-like)

Caracteristici: High-level textual language with convenient branch, loop, structure and array functions for complex mathematical calculation.

Câmpuri aplicabile

Managementul retetelor (mașini de ambalare, sisteme de dozare)

Data statistics, numărarea producției, energy consumption calculation, material traceability

Complex calibration, curve fitting, multi-parameter calculation, communication data parsing

Batch equipment parameter management, fault text processing

5. S7-GRAPH Sequential Function Chart (SFC)

Caracteristici: Steps + transition conditions, specially designed for time-sequential process flow.

Câmpuri aplicabile

Mașini de ambalare (umplere, etanșare, packing machines)

Mașini de turnat prin injecție, presses, assembly workstations, automatic loading/unloading equipment

Stepwise operation for production line stations, multi-process interlock and sequential technology

Excellent for sequential machines running step by step; process logic clear, faults can be located to specific step.

Industry Summary Matching CPU Hardware Capability

With onboard 16DI/16DO, 3-channel 30kHz high-speed counter, PWM output and PROFIBUS-DP, this set of programming languages is best suited for the below industries:

1. Mașini de ambalare: S7-GRAPH for process sequence, SCL for recipe, high-speed counter for encoder positioning
2. Transport material & Sorting Lines: LAD as primary language, DP network for remote I/O, photoelectric detection and sorting baffle control
3. Small Special Processing Machines: Foraj, stamping and assembly equipment; high-speed counter for encoder position acquisition
4. HVAC, Alimentare cu apă la presiune constantă, Small Sewage Treatment: FBD/LAD for PID regulation and alarm interlock
5. Old Production Line Retrofit: Replace legacy S7-300 spare parts, reuse massive existing STL/LAD legacy programs

Limitări

1. This language suite belongs to classic STEP7 S7-300 ecosystem. TIA Portal cannot go online directly with this CPU. Not recommended for new projects.
2. C language is unavailable, not fit for complex embedded algorithms. Additional communication board required if complex C code is needed.
3. S7-GRAPH and S7-SCL require STEP7 Professional edition. Basic STEP7 only includes LAD/FBD/STL.