PROFIBUS DP Networking Solution – SIEMENS 6ES7972-0BB50-0XA0 | S7-300 Series
Where This Product Is Used
The SIEMENS 6ES7972-0BB50-0XA0 is a PROFIBUS DP connector/interface module engineered for distributed I/O networking in demanding industrial environments. Engineers deploy this component across a wide range of applications:
- Automotive Assembly Lines – Connects S7-300 PLCs to distributed ET 200 I/O stations on high-speed body-in-white and paint-shop lines where deterministic bus timing is critical.
- Water & Wastewater Treatment Plants – Provides reliable PROFIBUS DP connectivity between master controllers and remote field devices (valve actuators, flow meters, level sensors) in corrosive, high-humidity environments.
- Pharmaceutical & Food Processing – Supports GMP-compliant automation architectures requiring traceable, noise-immune fieldbus communication between PLCs and process instruments.
- Power Generation & Utilities – Integrates protection relays, drives, and HMI panels into a unified PROFIBUS DP segment managed by a SIMATIC S7-300 master.
- Material Handling & Conveyor Systems – Links motor starters, frequency inverters, and safety modules across long cable runs in warehouse and logistics automation.
- Machine Tool & CNC Machining Centers – Enables real-time axis coordination and I/O expansion via PROFIBUS DP without adding CPU load to the main controller.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 6ES7972-0BB50-0XA0 |
| Product Family | SIMATIC S7-300 |
| Interface Type | PROFIBUS DP |
| Connector Type | Sub-D 9-pin (RS-485) |
| Bus Termination | Switchable on-board termination resistor |
| Max. Transmission Rate | Up to 12 Mbit/s |
| Cable Entry Angle | 90° (vertical cable exit) |
| PG/PC Port | Integrated programming port (pass-through) |
| Operating Temperature | 0 °C to +60 °C |
| Protection Class | IP20 |
| Weight | Approx. 500 g (packaged) |
| Manufacturer | Siemens AG, Germany |
| SIMATIC Product Line | S7-300 / ET 200M |
Why Engineers Specify This Model
- Integrated PG Port – Allows online programming and diagnostics without disconnecting the bus segment, reducing maintenance downtime to near zero.
- Switchable Bus Termination – Eliminates the need for external termination resistors at segment ends, simplifying cabinet wiring and reducing BOM cost.
- 90° Cable Exit – Ideal for tight DIN-rail enclosures where horizontal connectors would create cable-management conflicts.
- 12 Mbit/s Support – Sustains the highest PROFIBUS DP baud rate, ensuring cycle times remain within spec even on large I/O segments.
- Proven S7-300 Ecosystem Compatibility – Drop-in replacement for existing installations; no firmware update or parameter change required.
- Long Production History – Widely stocked globally, ensuring spare-parts availability for the full lifecycle of your installed base.
Complete System Bill of Materials
For a complete PROFIBUS DP segment using the S7-300 platform, engineers typically specify:
- SIMATIC S7-300 CPU (e.g., 6ES7315-2EH14-0AB0) – DP master
- 6ES7972-0BB50-0XA0 – PROFIBUS DP connector (this item)
- PROFIBUS DP Cable (e.g., 6XV1830-0EH10) – shielded twisted-pair bus cable
- ET 200M IM 153-2 (e.g., 6ES7153-2BA02-0XB0) – distributed I/O interface module
- SM 321 / SM 322 I/O modules – digital input/output expansion
- SIMATIC S7-300 Power Supply PS 307 (e.g., 6ES7307-1EA01-0AA0)
- STEP 7 / TIA Portal Engineering Software – for configuration and diagnostics
Compliance & Industry Standards
- PROFIBUS International (PI) certified – IEC 61158 / IEC 61784
- CE marked – EMC Directive 2014/30/EU & Low Voltage Directive 2014/35/EU
- UL listed for industrial control equipment
- RoHS compliant – Directive 2011/65/EU
- Manufactured under ISO 9001 quality management system
Quality Assurance & Sourcing
Every 6ES7972-0BB50-0XA0 unit shipped from Konmask.com undergoes the following verification process:
- Authenticity Check – Visual inspection of Siemens holographic labels, date codes, and packaging integrity.
- Functional Pre-test – Bus termination switch operation and connector pin continuity verified before dispatch.
- Traceability – Batch and serial records retained for full supply-chain traceability.
- Secure Packaging – Anti-static ESD bag + foam-lined carton to prevent transit damage.
We source exclusively from authorized distributors and verified industrial surplus channels. Counterfeit-free guarantee backed by our return policy.
How to Source This Part
- Add the 6ES7972-0BB50-0XA0 to your cart and proceed to checkout.
- For volume orders (>10 units) or project-based procurement, contact us directly for a formal quotation with lead-time confirmation.
- Urgent requirements? Email support@konmask.com or call +0086 19859288691 — we respond within 4 business hours.
- Export documentation (CO, packing list, commercial invoice) available on request for international shipments.
Application-Specific FAQ
Q: Is the 6ES7972-0BB50-0XA0 compatible with S7-400 DP masters?
A: Yes. The connector is electrically compatible with any PROFIBUS DP master regardless of CPU family, as it is a passive bus connector, not a CPU-specific module.
Q: Can I use this connector at both ends of a PROFIBUS segment?
A: Yes. Enable the on-board termination switch only at the two physical ends of the segment; leave it off for all intermediate nodes.
Q: What is the maximum cable length at 12 Mbit/s?
A: Per PROFIBUS specification, maximum segment length at 12 Mbit/s is 100 m. Use repeaters to extend beyond this distance.
Q: Does the integrated PG port affect bus timing?
A: No. The PG port is a passive tap and does not introduce additional bus load or affect cycle time.
Q: What cable type is required?
A: PROFIBUS Type A cable (shielded, 150 Ω impedance) is required for speeds above 500 kbit/s. Siemens 6XV1830-0EH10 is the recommended cable.
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Contact: support@konmask.com | +0086 19859288691
