Siemens 6ES7-972-0BA12-0XA0 Profibus DP Bus Connector

Unmarked PROFIBUS DP bus connector, part number 6ES7-972-0BA12-0XA0, is a 9-pin D-sub communication connector used to establish PROFIBUS DP network connections between PLCs, distributed I/O, HMIs, and field devices in industrial automation. It is equivalent to the Siemens SIMATIC DP bus connector and supports data transfer rates up to 12 Mbps, with an integrated, switchable terminating resistor and a 90° angled cable entry for compact installations. Cable-mounted and designed for industrial environments, it complies with PROFIBUS DP and IEC 61158 standards, ensuring reliable fieldbus communication within Siemens SIMATIC S7 systems and related equipment. Common replacements include Siemens 6ES7 972-0BB12-0XA0 and 6GK1500-0EA02, making it suitable for repair, retrofit, or expansion projects that require this form factor. The product is described as an unmarked communication connector used to connect PROFIBUS DP devices and networks in systems where stable network connectivity is essential.