6ES7972-0BB12-0XA0 | PROFIBUS DP Bus Connector with PG Port, 90° Cable Outlet
6ES7972-0BB12-0XA0 PROFIBUS DP / MPI bus connector (RS485). 90° cable outlet, integrated PG/diagnostic port, screw terminals, for S7-300/400/ET 200M networks up to 12 Mbps.
Product Overview
The 6ES7972-0BB12-0XA0 is a PROFIBUS DP / MPI RS485 bus connector (sub-D 9-pin) used to terminate and interconnect nodes in a SIMATIC S7, S5, or ET 200 distributed I/O network. It features a 90° (right-angle) cable outlet, integrated PG/PC diagnostic port (AUX) for online monitoring without disconnecting the bus, and screw terminals for quick cable shield/drain wire termination. This is the standard bus connector for PROFIBUS segments running at up to 12 Mbit/s.
Technical Specifications (Electrical & Network)
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Parameter
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Specification
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Order Number
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6ES7972-0BB12-0XA0
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Product Family
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SIMATIC NET — PROFIBUS / MPI Bus Connector
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Interface Type
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RS-485 (EIA-485) via Sub-D 9-pin Female (EN 50170 / IEC 61158 Type 3 PROFIBUS DP)
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Connector Style
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90° Cable Outlet (Right-Angle) — for tight panel / rail spacing
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Max. Baud Rate Supported
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12 Mbit/s (PROFIBUS DP-V0/V1)
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Integrated PG/PC Port
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Yes (AUX Port — Sub-D 9-pin Female) — allows passive tap for programming/diagnostics
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Bus Termination (Onboard Switch)
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No — termination is provided by DIP switch on some variants (this -0BB12 uses external termination plug or built-in switch on newer -0BAxx) — typically last node is terminated with a 6ES7972-0BA50-0XA0 terminator plug
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Cable Type
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PROFIBUS / RS485 shielded twisted pair (A/B signals) — e.g., 6XV1830-0EH10
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Technical Specifications (Mechanical & Environmental)
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Parameter
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Specification
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Cable Entry / Strain Relief
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Integrated clamp with screw-down shield/drain wire terminal
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Housing Material
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ABS/PC (Plastic)
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DIN Rail / Panel Mount
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Plugs directly onto PLC MPI/DP port or repeater — no separate mounting
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Operating Temperature
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0 … +60 °C
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Storage Temperature
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-40 … +85 °C
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Protection Class
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IP20 (Cabinet Install)
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Dimensions (L×W×H)
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~60 × 15 × 35 mm (approx., 90° version)
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Weight
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~0.03 kg
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Key Features
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PG/PC Diagnostic Tap: The auxiliary AUX port lets you connect a PG/PC or analyzer to the live bus without breaking the segment — essential for commissioning and troubleshooting.
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90° Low-Profile Design: Right-angle cable exit saves space in shallow cabinets or tight rack groupings vs. the 35° variant (6ES7972-0BA12-0XA0).
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Screw Shield Termination: Dedicated drain wire screw terminal ensures proper shielding practice per EN 50174 — no crimp ferrule needed for shield.
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Ecosystem Native: Direct plug-in to CPU 31x/41x MPI/DP ports, CP 5611/5621 cards, IM 153-2 DP interfaces, and Y-Link repeaters.
Applications
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PROFIBUS DP Network Build: Connecting S7-300/400 CPUs, ET 200M/ET 200S stations, drives (G120/G130 with PROFIBUS option), and HMI panels into a multi-drop RS485 segment.
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MPI Programming Link: Temporary PG connection to S7-300/400 CPUs for STEP 7 download/upload via the AUX port.
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Bus Troubleshooting: Tapping live segments with a laptop running SIMATIC NET or third-party PROFIBUS analyzers.
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Legacy S5 / S7 Hybrid Networks: Also compatible with MPI protocol (up to 187.5 kbps S7, 1.5 Mbps S5) for mixed-vintage plants.
Note: For the 35° cable outlet version (more common in deep cabinets), see 6ES7972-0BA12-0XA0 (no PG port) or 6ES7972-0BB41-0XA0 (35° with PG port — newer FastConnect design). Bus termination is applied at the two end nodes using either a built-in DIP switch (on -0BA50/-0BB50 variants) or a 6ES7972-0BA50-0XA0 terminator plug on the last connector's AUX port. Always use screened PROFIBUS cable (e.g., 6XV1830-0EH10) and connect the shield to the designated screw terminal.
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
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Frequently Ask & Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.
