Siemens 6ES7972-0BA60-0XA0 – PROFIBUS DP RS‑485 Bus Connector for Reliable Field Wiring

The Siemens 6ES7972-0BA60-0XA0 is a PROFIBUS DP RS‑485 bus connector used to attach PLCs, remote I/O, HMIs, and drives to a DP segment via a 9‑pin Sub‑D. From my experience, this model is a solid field spare when you need a straight, dependable replacement—termination is integrated on the connector and the angled cable outlet keeps wiring neat in compact panels. You might notice that installation is quick: seat the Sub‑D on the device, lock the screws, terminate the cable, and set the termination switch at the segment end.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week for in-stock; no more than 1 month at the latest
• Payment method: 50% advance payment, full payment for delivery
• Express delivery: FedEx, UPS, DHL
• Pre‑shipment checks: visual inspection and connector latch check, ESD‑safe packing

Key Features

• RS‑485 PROFIBUS DP connector – 9‑pin Sub‑D device plug with integrated bus termination for segment ends.
• Angled cable outlet – The angled exit (typically 90° on this series) helps with shallow enclosures and tidy routing.
• High‑speed capable – Designed for typical PROFIBUS DP data rates up to 12 Mbit/s when installed correctly.
• Service‑friendly – Termination switch accessible at the connector; reduces time during commissioning or swap‑outs.
• Rugged housing – Robust shell and captive screws hold up well in 24/7 duty and frequent service cycles.
• Field‑proven compatibility – Works with SIMATIC S7, ET 200, and most PROFIBUS‑DP devices using Sub‑D connectors.

Technical Specifications

Application Fields

You’ll see this connector across most PROFIBUS DP installations where reliability and quick service swaps matter:

• SIMATIC S7 controllers to ET 200 stations in distributed panels.
• VFDs and soft starters using DP control/diagnostics on production lines.
• Process skids with DP‑based instruments and valve islands.
• OEM machines where standardized DP cabling speeds assembly and FAT.

A service tech told me last quarter, “We flipped the termination, tightened the Sub‑D screws, and the BF cleared immediately.” That’s been my typical experience with these 6ES7 972 bus connectors.

Advantages & Value

• Reliability – Robust connector mechanics reduce intermittent faults from vibration or handling.
• Compatibility – Fits standard PROFIBUS DP Sub‑D ports across Siemens and many third‑party devices.
• Time savings – Integrated termination and an angled exit typically speed commissioning in tight cabinets.
• Cost control – A simple spare that often fixes bus faults without touching the PLC or program.
• Support – We can help confirm the right outlet angle/termination style to match your enclosure layout.

Installation & Maintenance

• Cabling: Use PROFIBUS‑DP shielded twisted pair; maintain the shield 360° at the connector.
• Topology: Bus line with short device stubs; enable termination only on the first and last node.
• Strain relief: Secure the cable; respect bending radius to avoid reflections, especially ≥1.5 Mbit/s.
• Grounding & EMC: Bond the shield to panel ground; route away from VFD motor leads and high‑current conductors.
• Service checks: During outages, re‑torque Sub‑D screws, inspect termination switch position, and check cable cuts/IDC seats if used.
• Spare strategy: Keeping a couple of identical connectors per line is, in many cases, the fastest fix for BF/communication alarms.

Quality & Certifications

• Produced under Siemens quality management, typically aligned with ISO 9001.
• RoHS compliant; CE marking applies on relevant variants for EMC.
• Warranty: 365 days repair/replace coverage from delivery.