SIEMENS 6ES7314-6BH04-0AB0 Compact CPU with DP | Replacement, Equivalent & Selection Guide
The SIEMENS 6ES7314-6BH04-0AB0 (CPU 314C-2 DP) is a high-performance compact CPU within the SIMATIC S7-300 series, integrating onboard I/O and a PROFIBUS-DP interface for demanding industrial automation environments. This page provides a comprehensive selection guide, compatible replacement models, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
| Part Number | 6ES7314-6BH04-0AB0 |
| Series | SIMATIC S7-300 |
| CPU Type | CPU 314C-2 DP (Compact CPU) |
| Work Memory | 192 KB |
| Processing Speed | 0.1 ms / 1000 instructions |
| Onboard Digital I/O | 24 DI / 16 DO |
| Onboard Analog I/O | 4 AI / 2 AO |
| Communication Interface | MPI + PROFIBUS-DP (Master/Slave) |
| Max. DP Slaves | 124 |
| Power Supply | DC 24 V |
| Operating Temperature | 0 °C to +60 °C |
| Protection Class | IP20 |
| Dimensions (W×H×D) | 80 × 125 × 130 mm |
| Weight | Approx. 620 g |
| Standards | CE, UL, cULus, ATEX Zone 2 |
Compatible Replacement & Equivalent Models
When the 6ES7314-6BH04-0AB0 is unavailable or being phased out, the following models offer functional compatibility or direct replacement paths:
| Model | Series | Key Difference | Compatibility |
|---|---|---|---|
| 6ES7314-6BG03-0AB0 | S7-300 | Previous firmware revision (V2.6) | Direct drop-in (same hardware) |
| 6ES7315-2EH14-0AB0 | S7-300 | CPU 315-2 DP — larger memory (256 KB) | Functional upgrade, same DP interface |
| 6ES7317-2EK14-0AB0 | S7-300 | CPU 317-2 DP — higher performance | Upward compatible, larger footprint |
| 6ES7315-2FJ14-0AB0 | S7-300 | CPU 315-2 PN/DP — adds PROFINET | Functional equivalent with PN upgrade |
| 6ES7511-1AK02-0AB0 | S7-1500 | CPU 1511-1 PN — next-gen platform | Migration path (requires re-engineering) |
Note: Always verify firmware version, I/O mapping, and program compatibility before substitution. Contact our technical team for migration support.
Why Choose the Original Model
- Proven Reliability: The 6ES7314-6BH04-0AB0 has a decade-long track record in continuous industrial operation across global installations.
- Integrated I/O: Onboard 24 DI/16 DO and 4 AI/2 AO eliminate the need for additional I/O modules in compact machine builds.
- Dual-Port DP: Native PROFIBUS-DP master/slave capability supports complex distributed I/O architectures without additional communication modules.
- Spare Parts Availability: Widely stocked globally — ideal for long-term maintenance and MRO procurement strategies.
- TIA Portal Compatible: Fully programmable via STEP 7 and TIA Portal V13+, ensuring seamless integration with existing engineering environments.
Typical Applications
- Automotive body shop welding and assembly lines
- Packaging machinery and conveyor control systems
- Water treatment and pump station automation
- Textile and printing machine controllers
- Building automation and HVAC control panels
- Food & beverage processing lines
- Chemical plant distributed control systems
System Compatibility
The 6ES7314-6BH04-0AB0 is compatible with the following SIMATIC S7-300 ecosystem components:
- Power Supplies: 6ES7307-1BA01-0AA0 (2A), 6ES7307-1EA01-0AA0 (5A), 6ES7307-1KA02-0AA0 (10A)
- Signal Modules: SM 321, SM 322, SM 331, SM 332, SM 334 series
- Communication Modules: CP 342-5 (PROFIBUS), CP 343-1 (Ethernet/PROFINET)
- Interface Modules: IM 360/361 for multi-rack expansion
- Programming Software: SIMATIC STEP 7 V5.5+, TIA Portal V13 SP1+
- HMI: SIMATIC TP/MP series, WinCC flexible, WinCC V7+
Selection Guide
Use the criteria below to determine whether the 6ES7314-6BH04-0AB0 is the right CPU for your application:
| Requirement | Recommended Choice |
|---|---|
| Compact machine with onboard I/O needed | ✅ 6ES7314-6BH04-0AB0 (this model) |
| PROFIBUS-DP master required | ✅ 6ES7314-6BH04-0AB0 (this model) |
| Memory > 192 KB required | ➡ Upgrade to 6ES7315-2EH14-0AB0 |
| PROFINET interface required | ➡ Consider 6ES7315-2FJ14-0AB0 |
| Future-proof S7-1500 migration | ➡ 6ES7511-1AK02-0AB0 (re-engineering needed) |
| Replacement for existing S7-300 line | ✅ Direct replacement — same form factor |
Quality Assurance & Sourcing
At Konmask.com, every SIEMENS module undergoes a rigorous 4-step verification process before shipment:
- Visual Inspection: Holographic label, serial number format, and housing integrity check against OEM specifications.
- Functional Test: Power-on diagnostics, I/O channel verification, and DP communication handshake test.
- Documentation Review: Certificate of conformity, country of origin declaration, and traceability records provided on request.
- Packaging Audit: Anti-static packaging, humidity indicators, and shock-absorbing materials verified before dispatch.
We source directly from authorized distributors and verified secondary market channels with full traceability. Counterfeit-free guarantee backed by our return policy.
How to Order
- Confirm part number: 6ES7314-6BH04-0AB0 and required quantity.
- Submit your inquiry via the product page or email support@konmask.com.
- Receive a formal quotation with lead time, shipping options, and documentation package within 24 hours.
- Approve the proforma invoice and arrange payment — we accept T/T, PayPal, and major credit cards.
- Shipment dispatched with tracking number and packing list within 1–3 business days.
For urgent requirements or large-volume orders, please call +0086 19859288691 directly.
Replacement & Compatibility FAQ
Q: Can I replace 6ES7314-6BH04-0AB0 with 6ES7314-6BG03-0AB0 directly?
A: Yes. The BG03 is a prior hardware revision with identical I/O and DP functionality. Firmware may differ — update via STEP 7 after installation.
Q: Is the 6ES7314-6BH04-0AB0 compatible with TIA Portal?
A: Yes, from TIA Portal V13 SP1 onwards. STEP 7 V5.5 is also fully supported.
Q: Can this CPU be used as a PROFIBUS-DP slave?
A: Yes. The integrated DP port supports both master and slave operation, configurable in hardware configuration.
Q: What is the difference between CPU 314C-2 DP and CPU 314C-2 PN/DP?
A: The PN/DP variant (6ES7314-6EH04-0AB0) adds an integrated PROFINET interface. If Ethernet connectivity is required, the PN/DP version is recommended.
Q: Do you provide a warranty on this module?
A: Yes. All modules carry a 12-month warranty against manufacturing defects. Replacement or full refund guaranteed for verified quality issues.
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Contact: support@konmask.com | +0086 19859288691
