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Beckhoff BK9000 Ethernet Bus Coupler

Brand: Beckhoff
Model: BK9000

  • Type: Programmable Controllers
  • Number of Bus Terminals: 64
  • Power supply: 24 V DC (-15 %/+20 %)
  • Input current: 70 mA + (total K-bus current)/4, 500 mA max.

Condition: Used/refurbished
Warranty: Three Months
BECKHOFF BK9000 Manual
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Beckhoff BK9000

The BK9000 Bus Coupler connects Ethernet with the modular, extendable electronic terminal blocks. One unit consists of one Bus Coupler, any number from 1 to 64 terminals and one end terminal.

The Bus Coupler recognises the terminals to which they connected, and performs the assignment of the inputs and outputs to the words of the process image automatically. The BK9000 supports 10 Mbit/s and 100 Mbit/s Ethernet. Connection through normal RJ45 connectors. The IP address set on the DIP switch (offset to a freely selectable start address). In networks with DHCP (a service for the allocation of the logical IP address to the physical node address [MAC-ID]) the Bus Coupler obtains its IP address from the DHCP server.

The Bus Coupler supports ADS TwinCAT system communication. TwinCAT I/O makes available configuration tools and Windows NT/2000/XP drivers for programs in any desired high-level language (DLLs) and for Visual Basic applications (ActiveX). Applications with OPC interfaces can access ADS (and therefore the BK9000) via an OPC server. In addition to ADS the Bus Coupler supports Open Modbus (Modbus TCP), a simple, widespread master/slave protocol based on TCP/IP.


  • Number of Bus Terminals: 64
  • Max. number of bytes fieldbus: 512 byte input and 512 byte output
  • Digital peripheral signals: 512 inputs/outputs
  • Analog peripheral signals: 128 inputs/outputs
  • Protocol: TwinCAT ADS, Modbus TCP, Beckhoff real-time Ethernet
  • Configuration possibility: via KS2000
  • Data transfer rates: 10/100 Mbaud, automatic recognition of the transmission rate
  • Bus interface: 1 x RJ45
  • Power supply: 24 V DC (-15 %/+20 %)
  • Input current: 70 mA + (total K-bus current)/4, 500 mA max.
  • Starting current: 2.5 x continuous current
  • Recommended fuse: ≤ 10 A
  • Current supply K-bus: 1750 mA
  • Power contacts: 24 V DC max./10 A max.
  • Electrical isolation: 500 V (power contact/supply voltage/fieldbus)
  • Weight approx.: 170 g
  • Operating/storage temperature: -25…+60 °C/-40…+85 °C

BECKHOFF BK9000 Manual
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