BECKHOFF BK9100 Bus Terminal Ethernet TCP/IP Bus Coupler

SKU BK9100

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12-month warranty
Free returns within 30 days

Manufacturer: BECKHOFF
Product No.: BK9100
Country of origin:Germany
Product Type: Ethernet Bus Couplers
Payment: T/T, Western Union
Weight: 170g
Shipping port: Xiamen
Warranty: 12 months

Description

Integrating industrial I/O signals directly into Ethernet networks, the BECKHOFF BK9100 functions as a high-performance Ethernet TCP/IP bus coupler designed for modular Bus Terminal configurations. This interface module bridges the fieldbus-independent K-bus system with standard Ethernet networks, permitting efficient decentralized automation architectures.

The unit features an integrated 3-port switch (configured as a 2-channel switch and one internal port), facilitating line topology and star topology physical wiring without requiring external network switches. Communication capabilities include multi-protocol support, enabling seamless integration within TwinCAT ADS systems, Modbus TCP networks, and Beckhoff real-time Ethernet environments. Configuration and diagnostics are conveniently handled via the KS2000 software interface.

Features

Dual-Channel Switch: Equipped with 2 x RJ45 ports for cost-efficient line topology cascading of up to 20 BK9100 units.
Flexible Expansion: Connects up to 64 Bus Terminals directly, with scalability up to 255 terminals using a K-bus extension.
Multi-Protocol Support: Compatible with TwinCAT ADS, Modbus TCP, and Beckhoff Real-Time Ethernet protocols.
Auto-Negotiation: Detects transmission speeds of 10 or 100 Mbit/s automatically.
Reliable Isolation: Features 500 V electrical isolation between power contacts, supply voltage, and the fieldbus network.

Applications

Process control and industrial automation networks
Decentralized data acquisition systems
Factory floor I/O expansion in line and star topologies
Water and wastewater management systems
Material handling and building automation infrastructure

Technical Specifications

Manufacturer	BECKHOFF
Part Number / Model	BK9100
Number of Bus Terminals	64 (up to 255 with K-bus extension)
Max. Number of Fieldbus Bytes	512 bytes input / 512 bytes output
Digital Peripheral Signals	512 inputs / 512 outputs
Analog Peripheral Signals	128 inputs / 128 outputs
Configuration Capability	Via KS2000 software
Protocols	TwinCAT ADS, Modbus TCP, Beckhoff real-time Ethernet
Data Transfer Rates	10/100 Mbit/s (automatic detection)
Bus Interface	2 x RJ45 (2-channel switch)
Data Transfer Medium	4 x 2 twisted pair copper cable; Category 3 (10 Mbit/s), Category 5 (100 Mbit/s)
Power Supply	24 V DC (-15% / +20%)
Input Current	70 mA + (total K-bus current)/4, 500 mA maximum
Starting Current	2.5 x continuous current
Recommended Fuse	Less than or equal to 10 A
Current Supply K-Bus	1750 mA
Power Contacts	Max. 24 V DC / Max. 10 A
Electrical Isolation	500 V (power contact / supply voltage / fieldbus)
Operating Temperature	-25 to +60 Celsius
Storage Temperature	-40 to +85 Celsius
Relative Humidity	95%, no condensation
Vibration and Shock Resistance	Conforms to EN 60068-2-6 / EN 60068-2-27
EMC Immunity and Emission	Conforms to EN 61000-6-2 / EN 61000-6-4
Protection Rating	IP20
Installation Position	Variable
Weight	Approx. 170 g

Installation Guidelines

Mounting: Designed for standard 35 mm DIN rail installation conforming to EN 60715. Ensure correct seating and secure snapping mechanism alignment.
Wiring: Use Category 5 shielded twisted-pair (STP) copper cables for 100 Mbit/s operation to ensure robust immunity against electromagnetic interference.
Grounding: Connect the DIN rail to a low-impedance protective earth ground. Ensure shield continuity across all RJ45 connections.
Network Cascading: In line topologies, the maximum physical distance between stations is 100 m. Up to 20 BK9100 units can be cascaded, with a maximum total line length of 2 km.

Compliance and Certifications

CE: Yes
UL: Yes
DNV GL: Marine Certified
ATEX Ex-Marking: II 3 G Ex ec IIC T4 Gc
IECEx Ex-Marking: Ex ec IIC T4 Gc

FAQ

How many Bus Terminals can be connected to the Beckhoff BK9100?

The BK9100 can connect up to 64 Bus Terminals directly. With a K-bus extension, the network can be expanded to support up to 255 Bus Terminals.

Which communication protocols does the BK9100 support?

The BK9100 supports TwinCAT ADS, Modbus TCP, and Beckhoff real-time Ethernet protocols.

Does the BK9100 support daisy-chain topology?

Yes, because it includes an integrated 2-channel switch (2 x RJ45 ports), you can cascade up to 20 BK9100 units in a line topology without requiring external switches.

What is the maximum current supply capacity for the internal K-bus?

The BK9100 delivers a maximum current supply of 1750 mA to the internal K-bus system.

What cables are recommended for connection to the BK9100?

A Category 3 (10 Mbit/s) or Category 5 (100 Mbit/s) 4 x 2 twisted-pair copper cable is recommended for reliable data transfer.

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30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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