Introduction to the Siemens 6ES7972-0BA42-0XA0 PROFIBUS Connector
When connecting PROFIBUS stations to a bus cable, signal integrity and mechanical robustness are critical. The 6ES7972-0BA42-0XA0 from Siemens is a PROFIBUS bus connector designed for RS-485 networks. It features a screw-type connection without a programming port and a 35° cable outlet. This connector supports transfer rates from 9.6 kbit/s up to 12 Mbit/s, making it suitable for high-speed PROFIBUS DP applications.
Key Features and Technical Specifications
The 6ES7972-0BA42-0XA0 delivers dependable performance in industrial environments. Its design includes an integrated terminating resistor that can be activated via a slide switch, providing proper line termination without external components. The connector is silicon-free, which is essential for paint shop and coating applications. With a compact footprint of 15.8 mm width, 54 mm height, and 39.5 mm depth, it fits neatly into space-constrained cabinets.
- Transfer rate: 9.6 kbit/s to 12 Mbit/s for PROFIBUS DP
- Electrical connections: 2 for PROFIBUS cables, 1 for network components or terminal equipment
- Connection type: Screw for PROFIBUS cables; 9-pin sub-D for network components
- Integrated terminating resistor with isolating function, connectable via slide switch
- 35° cable outlet for angled cable routing
- Operating temperature: -25 °C to +60 °C
- Storage and transport temperature: -40 °C to +70 °C
- Protection class: IP20
- Net weight: 29 g
- RoHS compliant and UL approved
One distinctive feature is the screw-type connection, which simplifies field wiring and ensures a secure, vibration-resistant termination. This is particularly beneficial in environments with mechanical stress.
Applications and Use Cases
The 6ES7972-0BA42-0XA0 is used to connect PROFIBUS stations such as PLCs, drives, and remote I/O devices to a PROFIBUS DP network. Its 35° cable outlet allows flexible cable routing in control panels, reducing strain on the cable and connector.
Installation and Setup
Installing the 6ES7972-0BA42-0XA0 is straightforward. Strip the PROFIBUS cable and secure the wires using the screw terminals. Connect the 9-pin sub-D connector to the PROFIBUS station. If the connector is at the end of the bus segment, set the terminating resistor slide switch to the ON position. Ensure the cable outlet is oriented to avoid sharp bends, as the 35° design helps maintain the minimum bend radius.
Maintenance and Reliability
Routine inspection of the connector and cable is recommended to ensure reliable operation. Check that the screw terminals remain tight, especially in high-vibration environments. The integrated terminating resistor reduces signal reflections, which enhances network stability. The silicon-free construction prevents contamination in sensitive industrial processes, contributing to long service life.
Compatibility and Integration
As a PROFIBUS DP connector, the 6ES7972-0BA42-0XA0 works with any PROFIBUS DP network operating between 9.6 kbit/s and 12 Mbit/s. It is compatible with Siemens SIMATIC S7 PLCs and other PROFIBUS masters. The connector supports RS-485 electrical specifications, ensuring interoperability with standard PROFIBUS cables.
Troubleshooting and Common Issues
Common issues with PROFIBUS connectors include loose terminations and incorrect terminating resistor settings. If communication errors occur, verify that the slide switch is set correctly for the connector's position on the bus. Also, confirm that the cable is properly stripped and secured in the screw terminals. For troubleshooting, consult the Siemens SIMATIC NET documentation or contact AutoDCSTech for technical support.
Product Support and Availability
The 6ES7972-0BA42-0XA0 is available from AutoDCSTech. Contact our team to confirm stock and lead times.
Availability & Condition at AutoDCSTech
| Part Number | 6ES7972-0BA42-0XA0 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
