Factory Automation Solution – SIEMENS 6ES7315-2AF03-0AB0 | S7-300 CPU 315-2 DP
Where This Product Is Used
The SIEMENS 6ES7315-2AF03-0AB0 CPU 315-2 DP is a mid-range central processing unit from the SIMATIC S7-300 series, engineered for demanding industrial automation environments. Typical deployment scenarios include:
- Automotive assembly lines – coordinating multi-axis robot cells and conveyor sequencing via PROFIBUS-DP
- Water & wastewater treatment plants – managing pump stations, valve control, and SCADA integration
- Pharmaceutical manufacturing – batch process control with strict cycle-time requirements
- Food & beverage packaging – high-speed I/O coordination across distributed remote I/O racks
- Power distribution substations – protection relay interfacing and energy metering via DP network
- Chemical process plants – continuous process monitoring with redundant communication paths
Technical Specifications
- Part Number / SKU: 6ES7315-2AF03-0AB0
- Series: SIMATIC S7-300
- Model: CPU 315-2 DP
- Manufacturer: SIEMENS AG
- Work Memory (RAM): 128 KB
- Load Memory: Integrated 96 KB RAM + expandable via MMC
- Processing Speed: 0.3 ms / 1000 instructions (binary)
- Communication Interfaces: MPI (187.5 kbps) + PROFIBUS-DP Master/Slave (up to 12 Mbps)
- Max. I/O Addresses: 2048 bytes digital / 512 bytes analog
- Max. Modules per Rack: 8 (expandable via IM)
- Supply Voltage: 24 V DC (via PS module)
- Operating Temperature: 0 °C to +60 °C
- Dimensions (W×H×D): 80 × 125 × 130 mm
- Weight: Approx. 490 g
- Protection Class: IP20
- Firmware: V1.x compatible
Why Engineers Specify This Model
- Dual-port PROFIBUS-DP enables simultaneous master and slave operation — critical for hierarchical network topologies
- 128 KB work memory handles complex ladder/FBD programs without external memory bottlenecks
- Proven S7-300 platform with decades of field reliability and global spare-parts availability
- STEP 7 / TIA Portal compatible — engineers can reuse existing program libraries with minimal migration effort
- Hot-swap MMC support allows firmware and program updates without full system shutdown
- Compact DIN-rail form factor minimizes panel footprint in space-constrained enclosures
Complete System Bill of Materials
To build a fully operational S7-300 station around the 6ES7315-2AF03-0AB0, engineers typically specify:
- Power Supply: 6ES7307-1BA01-0AA0 (PS 307, 5A, 24VDC)
- CPU (this unit): 6ES7315-2AF03-0AB0
- Digital Input Module: 6ES7321-1BL00-0AA0 (SM 321, 32×DI 24VDC)
- Digital Output Module: 6ES7322-1BL00-0AA0 (SM 322, 32×DO 24VDC/0.5A)
- Analog Input Module: 6ES7331-7KF02-0AB0 (SM 331, 8×AI)
- Rack: 6ES7390-1AE80-0AA0 (UR2, 9-slot)
- MMC Memory Card: 6ES7953-8LF31-0AA0 (4 MB)
- PROFIBUS Connector: 6ES7972-0BB52-0XA0 (90° bus connector)
Compliance & Industry Standards
- CE Marked — EU Machinery Directive 2006/42/EC compliant
- UL Listed — UL 508 (Industrial Control Equipment)
- IEC 61131-2 — Programmable Controllers Hardware Standard
- PROFIBUS-DP — EN 50170 / IEC 61158 compliant
- RoHS Directive 2011/65/EU compliant
- ATEX / IECEx: Not rated for Zone 0/1 — use appropriate barriers for hazardous areas
Quality Assurance & Sourcing
Every 6ES7315-2AF03-0AB0 unit shipped by Konmask.com undergoes a structured inspection protocol:
- Visual inspection for physical damage, corrosion, and counterfeit indicators
- Label and firmware version verification against SIEMENS factory records
- Functional power-on test with MPI communication check
- Anti-static packaging with humidity indicator card
- Traceable sourcing from authorized distributors and certified secondary-market suppliers
Units are sourced from decommissioned OEM lines, authorized surplus channels, and factory-new stock where available. Condition is clearly stated on each listing.
How to Source This Part
- In Stock: Add to cart and check out — ships within 1–3 business days
- Bulk / Project Quantity: Contact support@konmask.com for volume pricing and lead-time commitment
- Urgent Requirement: Call/WhatsApp +0086 19859288691 for same-day quotation
- System Integration Support: Our engineers can assist with BOM validation and compatibility checks at no charge
Application-Specific FAQ
Q: Is the 6ES7315-2AF03-0AB0 compatible with TIA Portal?
A: Yes, via the STEP 7 V5.x compatibility layer in TIA Portal V13 and later. Native TIA Portal programming requires migration to the S7-300 CPU 31xC or S7-1500 family.
Q: Can this CPU act as both PROFIBUS-DP master and slave simultaneously?
A: Yes. The integrated DP interface supports combined master/slave operation, enabling it to sit between a supervisory controller and distributed I/O in the same network segment.
Q: What is the maximum PROFIBUS-DP network length?
A: Up to 1200 m at 93.75 kbps without repeaters; 100 m at 12 Mbps. Use RS-485 repeaters (e.g., 6ES7972-0AA02-0XA0) to extend reach.
Q: Does this unit support S7 communication with an S7-1500 PLC?
A: Yes, via S7 routing over MPI/PROFIBUS. PUT/GET instructions can exchange data between S7-300 and S7-1500 stations on the same network.
Q: What MMC card size is recommended for this CPU?
A: A minimum 512 KB MMC (6ES7953-8LG11-0AA0) is sufficient for most programs; 4 MB (6ES7953-8LF31-0AA0) is recommended for projects with large data blocks or recipe management.
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