Siemens 6GK7343-5FA00-0XE0 CP 343-5 PROFIBUS Communication Processor | Replacement, Equivalent & Selection Guide
The Siemens 6GK7343-5FA00-0XE0 is a CP 343-5 PROFIBUS DP/FMS communication processor designed for the Siemens SIMATIC S7-300 PLC platform. It enables high-speed PROFIBUS DP master/slave communication, FMS services, and S7 routing — making it a critical component in distributed industrial automation architectures. This page provides full technical specifications, compatible replacement models, selection guidance, and sourcing information.
Technical Specifications
- Part Number: 6GK7343-5FA00-0XE0
- Product Family: CP 343-5
- Compatible PLC: SIMATIC S7-300
- Communication Standard: PROFIBUS DP / FMS
- PROFIBUS Speed: Up to 12 Mbit/s
- Interface: 9-pin Sub-D connector (RS-485)
- DP Mode: DP Master (Class 1 & 2) and DP Slave
- FMS Services: Supported
- S7 Routing: Supported
- Configuration Tool: STEP 7 / NCM S7
- Power Supply: Via S7-300 backplane bus (5 VDC)
- Operating Temperature: 0 °C to +60 °C
- Storage Temperature: −40 °C to +70 °C
- Dimensions (W×H×D): 40 × 125 × 120 mm
- Weight: Approx. 230 g
- Protection Class: IP20
- Certifications: CE, UL, cULus
- MLFB / Order Number: 6GK7 343-5FA00-0XE0
Compatible Replacement & Equivalent Models
The following models are functionally compatible or serve as direct/near-direct replacements for the 6GK7343-5FA00-0XE0. Always verify firmware version and configuration compatibility before substitution.
- 6GK7343-5FA01-0XE0 — Upgraded firmware revision of CP 343-5; direct drop-in replacement in most S7-300 applications
- 6GK7343-5FA02-0XE0 — Latest CP 343-5 revision; enhanced diagnostics and extended DP slave support
- 6GK7343-1EX30-0XE0 — CP 343-1 (Industrial Ethernet); alternative if migrating from PROFIBUS to Ethernet-based communication
- 6GK7343-1GX30-0XE0 — CP 343-1 Advanced; Ethernet + PROFINET IO controller, suitable for modernization projects
- Third-party PROFIBUS DP masters compatible with S7-300 backplane (verify slot compatibility and GSD file support)
Note: Replacement selection depends on your PROFIBUS topology, DP master class requirements, and STEP 7 project version. Contact Konmask for pre-sales selection support.
Why Choose the Original Model
- Proven field reliability — Deployed in thousands of S7-300 installations across process, manufacturing, and utility industries
- Full PROFIBUS DP + FMS dual-protocol support — Rare in a single module; critical for legacy FMS device integration
- Native STEP 7 integration — Zero-configuration-overhead with NCM S7; no third-party driver required
- S7 routing capability — Enables cross-network PG/PC access and remote diagnostics without additional hardware
- Stable supply chain — Available as genuine new, tested-used, and refurbished stock through authorized distributors like Konmask
Typical Applications
- PROFIBUS DP master for distributed I/O (ET 200M, ET 200S, ET 200B field devices)
- PROFIBUS FMS communication with drives, HMIs, and third-party field devices
- Multi-master PROFIBUS networks in process automation (chemical, oil & gas, water treatment)
- Machine tool and press line automation with S7-300 controllers
- Building automation and HVAC control systems using PROFIBUS topology
- Legacy system maintenance and spare-parts replacement in existing S7-300 installations
System Compatibility
- PLC Platform: SIMATIC S7-300 (all CPU variants with standard backplane)
- Rack Position: Any standard S7-300 signal module slot (not CPU slot)
- Configuration Software: STEP 7 V5.x / STEP 7 Professional; NCM S7 for PROFIBUS configuration
- TIA Portal: Not natively supported — use STEP 7 V5.x for this module
- PROFIBUS GSD: Standard GSD file available for third-party DP master integration
- Firmware Update: Via STEP 7 online functions
Selection Guide
Use the following criteria to determine whether the 6GK7343-5FA00-0XE0 or an alternative is the right choice for your project:
- Need PROFIBUS DP only? → Consider 6GK7343-5FA01-0XE0 (newer revision, same function)
- Need PROFIBUS DP + FMS? → 6GK7343-5FA00-0XE0 is the correct choice
- Migrating to Ethernet/PROFINET? → Select CP 343-1 Advanced (6GK7343-1GX30-0XE0)
- Budget-sensitive replacement? → Tested-used 6GK7343-5FA00-0XE0 or 5FA01 revision available from Konmask stock
- Using TIA Portal? → This module requires STEP 7 V5.x; consider CP 343-1 series for TIA Portal projects
- Multi-master network? → Confirm DP Class 1 master token-passing requirements with your network design
Quality Assurance & Sourcing
- Genuine Siemens origin — All units sourced from authorized channels or verified industrial surplus
- Pre-shipment testing — Each module undergoes power-on and communication function verification
- Condition options: New (sealed), Tested-Used (Grade A), Refurbished
- Traceability: Batch records and serial number documentation available on request
- Warranty: 12-month warranty on all units; extended warranty available
- Export compliance: HS Code 8537.10 — compliant with CN export regulations
How to Order
- Confirm your S7-300 rack slot availability and STEP 7 project version
- Specify required condition: New / Tested-Used / Refurbished
- Contact Konmask via email or phone with your order quantity and delivery timeline
- Receive quotation with lead time, shipping options (DHL / FedEx / sea freight), and payment terms
- Place order — typical dispatch within 1–3 business days for in-stock units
Email: [email protected] | Phone/WhatsApp: +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace 6GK7343-5FA00-0XE0 with 6GK7343-5FA01-0XE0 directly?
A: Yes, in most cases. The FA01 revision is a direct hardware successor. Re-download your STEP 7 hardware configuration after swapping.
Q: Is this module compatible with TIA Portal?
A: No. The CP 343-5 series requires STEP 7 V5.x / NCM S7. For TIA Portal projects, use the CP 343-1 series.
Q: Can this module act as both DP master and DP slave simultaneously?
A: No. It operates in either DP master or DP slave mode — not both simultaneously. Configure the mode in NCM S7.
Q: What is the maximum number of DP slaves supported?
A: Up to 125 DP slaves on the PROFIBUS segment (subject to network load and baud rate).
Q: Do you provide the STEP 7 configuration file or GSD file?
A: GSD files are available for download. STEP 7 hardware catalog entries are included natively in STEP 7 V5.x. Contact us for application support.
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Contact: [email protected] | +0086 19859288691
