Siemens 6ES7314-1AG13-0AB0 – CPU 314 Processor Module | SIMATIC S7-300
Engineering Background
The SIMATIC S7-300 series has been the backbone of industrial automation for over two decades, deployed across automotive, chemical, food & beverage, and discrete manufacturing sectors worldwide. The CPU 314 occupies the mid-range tier of the S7-300 family, delivering a balanced combination of processing speed, memory capacity, and I/O scalability that satisfies the majority of machine-level and line-level control requirements without over-engineering the solution.
Product Positioning
The 6ES7314-1AG13-0AB0 is the current-generation CPU 314 variant, replacing earlier -0AB0 firmware revisions. It is the preferred choice for procurement engineers who require a proven, globally supported processor with a well-documented spare-parts ecosystem, predictable lead times, and long-term Siemens service availability. Konmask.com supplies this module as a genuine, tested unit suitable for new installations, capacity expansions, and direct board-level replacements.
Complete Technical Specifications
| Order Number | 6ES7314-1AG13-0AB0 |
| Product Family | SIMATIC S7-300 |
| CPU Type | CPU 314 |
| Work Memory | 192 KB (program + data) |
| Load Memory | Integrated 64 KB RAM; expandable via MMC up to 8 MB |
| Processing Speed (Bit) | 0.1 µs / instruction |
| Processing Speed (Word) | 0.2 µs / instruction |
| Processing Speed (Float) | 3.0 µs / instruction |
| Digital I/O (max) | 1,024 inputs / 1,024 outputs |
| Analog I/O (max) | 256 inputs / 256 outputs |
| Communication Interface | MPI (187.5 kbps – 12 Mbps) |
| MPI Connections | 12 (max) |
| Integrated I/O | None (central rack + expansion racks) |
| Racks (max) | 4 (1 central + 3 expansion) |
| Modules per Rack | 8 |
| Supply Voltage | DC 24 V (via PS 307 power supply) |
| Current Consumption (5 V bus) | 1.2 A |
| Power Dissipation | 4.0 W (typical) |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -40 °C to +70 °C |
| Relative Humidity | 10 % to 95 % (non-condensing) |
| Protection Class | IP 20 |
| Dimensions (W × H × D) | 40 mm × 125 mm × 130 mm |
| Weight | Approx. 600 g |
| Certifications | CE, UL, cUL, FM, ATEX (Zone 2) |
| Programming Software | STEP 7 V5.x / TIA Portal (via legacy support) |
| Firmware Version | V3.3 (AG13 revision) |
Proven Application Environments
- Automotive Assembly Lines – Body-in-white welding cells, conveyor sequencing, and press control where deterministic scan times are mandatory.
- Chemical & Pharmaceutical Plants – Batch process control with ATEX Zone 2 compliance for hazardous-area installations.
- Food & Beverage Processing – Filling, capping, and labeling machines requiring hygienic-area panel integration with IP 20 backplane modules.
- Water & Wastewater Treatment – Pump station sequencing and SCADA-linked remote I/O via MPI/PROFIBUS gateway.
- Machine Tool & Packaging OEMs – Mid-complexity machines where S7-300 standardization reduces engineering and spare-parts overhead.
- Retrofit & Modernization Projects – Direct drop-in replacement for earlier CPU 314 variants (6ES7314-1AE04, 1AF10, 1AG10) with firmware-compatible program migration.
Engineering Advantages
- 192 KB Work Memory – Sufficient for complex ladder, FBD, and SCL programs with structured data blocks, eliminating the need to step up to CPU 315 in most applications.
- Fast Bit Processing (0.1 µs) – Enables tight scan cycles for high-speed I/O-intensive applications without additional co-processors.
- MPI Multi-Point Interface – Native programming, HMI, and inter-CPU communication without additional communication modules (CPs).
- MMC-Based Load Memory – Micro Memory Card retains program and data without battery backup, reducing maintenance overhead and eliminating battery-failure risk.
- Modular S7-300 Backplane – Snap-on DIN-rail mounting with hot-swap-capable signal modules; no tools required for module replacement.
- Global Spare-Parts Availability – One of the most widely stocked S7-300 CPUs globally; Siemens extended support lifecycle ensures long-term availability of firmware and documentation.
System Architecture & Signal Flow
The CPU 314 operates as the central processing unit on the S7-300 backplane (Rail). During each scan cycle, the CPU reads all digital and analog inputs from SM (Signal Modules) via the P-bus (peripheral bus) and K-bus (communication bus), executes the user program stored in work memory, and writes outputs back to the signal modules. The MPI interface simultaneously handles asynchronous communication requests from STEP 7 programming devices, SIMATIC HMI panels (TP/OP series), and peer CPUs in multi-CPU configurations.
Expansion beyond the central rack (CR) is achieved via IM 360/361 interface modules, supporting up to three expansion racks (ER) for a maximum of 32 signal module slots. Distributed I/O can be connected via a CP 342-5 PROFIBUS-DP master module, extending the I/O footprint to remote ET 200 stations without increasing CPU scan load.
Sourcing & Quality Verification
- Genuine Siemens Origin – All units sourced through verified industrial distribution channels; original Siemens labeling, holographic seals, and order-number laser marking intact.
- Pre-Shipment Functional Test – Each CPU is powered up, firmware version confirmed, and MPI communication verified before dispatch.
- ESD-Safe Packaging – Shipped in anti-static bags with foam cushioning inside double-wall cartons; compliant with IEC 61340-5-1 handling requirements.
- Traceability – Batch records and test logs retained for 3 years; available on request for regulated-industry procurement audits.
- Warranty – 12-month replacement warranty against manufacturing defects and DOA (Dead on Arrival) units.
Procurement Process
- Add to Cart – Select quantity and proceed to checkout, or contact us for volume pricing on orders of 5+ units.
- Order Confirmation – Automated order confirmation email with proforma invoice issued within 1 business hour.
- Payment – T/T bank transfer, PayPal, and major credit cards accepted. L/C available for orders above USD 5,000.
- Dispatch – In-stock units ship within 1–2 business days via DHL Express, FedEx International Priority, or UPS Worldwide Expedited.
- Documentation – Commercial invoice, packing list, and certificate of origin provided with every shipment. FORM E (ASEAN) available on request.
- After-Sales – Technical support via email and WhatsApp; RMA process initiated within 24 hours for warranty claims.
Technical FAQ
Q: Is 6ES7314-1AG13-0AB0 compatible with STEP 7 V5.5 and TIA Portal?
A: Yes. The CPU 314 is fully programmed and configured in STEP 7 V5.x (Classic). TIA Portal supports it via the “STEP 7 V5.x project import” migration path; native TIA Portal engineering is not available for S7-300 CPUs.
Q: Can this CPU replace a 6ES7314-1AF10-0AB0 or 1AG10-0AB0 without program changes?
A: In most cases, yes. The AG13 revision is firmware-compatible with earlier AG10/AF10 variants. A STEP 7 hardware configuration update (HW Config) is required to reflect the new order number; the user program typically requires no modification.
Q: Does the CPU 314 support PROFIBUS-DP master functionality?
A: No. The CPU 314 has an MPI interface only. PROFIBUS-DP master capability requires adding a CP 342-5 communication processor module to the rack.
Q: What Micro Memory Card (MMC) is required?
A: Any Siemens SIMATIC S7 MMC (6ES7953-8Lxx0-0AA0 series) from 64 KB to 8 MB is compatible. The MMC is not included and must be ordered separately.
Q: What is the battery backup situation?
A: The CPU 314 does not use a battery for program retention — the MMC provides non-volatile storage. A backup battery (6ES7971-1AA00-0AA0) is optional and only required if real-time clock retention during power-off is needed.
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