PLCs, Power Supplies & Others

Robust Network Connectivity and Signal Integrity

This PROFIBUS bus connector provides a reliable physical connection for fieldbus network segments. It features fast connection technology for easy and secure cable termination. The Siemens 6ES7972-0BA12-0XA0 includes a built-in termination resistor with a sliding switch for network configuration. It supports PROFIBUS DP and MPI communication protocols for versatile applications. The connector achieves a transmission rate of up to 12 Mbps for high-speed data exchange. Its 9-pin D-sub design ensures compatibility with standard PROFIBUS interfaces.

Physical Dimensions and Construction Details

The unit measures 65 mm in height, 35 mm in width, and 20 mm in depth. It weighs approximately 0.08 kg with all housing and contact elements included. The 6ES7972-0BA12-0XA0 connects directly to PROFIBUS stations and devices. Its rugged plastic housing provides protection against mechanical stress and environmental factors. This compact design enables installation in tight spaces within control cabinets.

Interface Connectivity and Cable Termination

A 9-pin D-sub connector serves as the primary interface to the PROFIBUS device. The Siemens 6ES7972-0BA12-0XA0 features a screw-type cable clamp for secure wire retention. It accommodates PROFIBUS cables with diameters ranging from 6 to 12 mm. The sliding switch enables simple activation or deactivation of the bus termination resistor. LED indicators on the connector display network activity and power status.

Internal Architecture and Electrical Specifications

The PCB contains the termination resistor network and signal conditioning components. The 6ES7972-0BA12-0XA0 uses a 220 Ω termination resistor for proper bus line matching. It includes a 100 µF capacitor for local noise filtering on the power supply line. The connector provides galvanic isolation between the bus cable and the device port. Its contacts feature gold-plated surfaces for reliable signal transmission over time.

Recommended Installation Practices

Insert the Siemens 6ES7972-0BA12-0XA0 securely into the PROFIBUS port of the device. Strip the cable insulation carefully before inserting wires into the clamp terminals. Position the termination switch to ON only for the last device on each segment. Use the OFF position for all intermediate nodes on the bus network. Verify proper termination by checking the bus voltage levels with a multimeter. Inspect the connector periodically for signs of corrosion or loose connections.

Details