SIEMENS 6ES7972-0BB42-0XA0

Siemens SIMATIC DP Bus Connector for PROFIBUS

Description

The Siemens 6ES7972-0BB42-0XA0 is a standard bus connector for building PROFIBUS DP networks with transmission speeds of up to 12 Mbit/s. It features a convenient 90-degree (inclined) cable outlet, ideal for installations where space is limited. A key feature is the integrated terminating resistor which can be switched on or off, providing essential signal integrity for the first and last nodes on a bus segment. This connector is a fundamental component for connecting PROFIBUS nodes like PLCs, HMIs, and distributed I/O.

Specifications

• Manufacturer: Siemens
• Part Number: 6ES7972-0BB42-0XA0
• Product Line: SIMATIC DP
• Product Type: Bus Connector
• Network Protocol: PROFIBUS DP
• Transmission Rate: Up to 12 Mbit/s
• Cable Outlet: 90-degree angled
• Features: Selectable terminating resistor with isolating function

Label Info

• Model: 6ES7 972-0BB42-0XA0
• Serial: C-D4S83879
• EAN: 4025515078296

Application

This bus connector is widely used in industrial automation to connect devices to a PROFIBUS DP network. It is suitable for applications in manufacturing, process control, and machine building where reliable, high-speed data communication is required between controllers and field devices.

Country of Origin

Made in Germany.

CO2 Impact

By purchasing this reused component, you are helping to avoid 2.0 kg of CO2 emissions. This saving is comparable to the emissions from driving a standard car for 10 kilometers.

Availability

This item is a new old stock (NOS) product, supplied in its original, sealed manufacturer packaging. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the purpose of the terminating resistor switch on this connector?

The switch activates an internal terminating resistor. This must be set to ‘ON’ for the first and last device on a PROFIBUS segment to prevent signal reflections and ensure reliable communication. For all other devices in the middle of the segment, it should be ‘OFF’.

Can this connector be used with PROFIBUS PA networks?

No, this connector is specifically designed for high-speed PROFIBUS DP (Decentralized Peripherals) networks using RS-485 physics. PROFIBUS PA (Process Automation) uses a different physical layer (MBP) and requires different connectors and cabling.

What is the maximum transmission rate supported by the 6ES7972-0BB42-0XA0?

This bus connector supports the full range of PROFIBUS DP speeds, up to a maximum of 12 Mbit/s, making it suitable for a wide variety of industrial applications.

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Last Update: Friday, March 13, 2026