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BK9100 | Ethernet TCP/IP Bus Coupler

BK9100 | Ethernet TCP/IP Bus Coupler

BK9100 | Ethernet TCP/IP Bus Coupler

Power LEDs
Bus Coupler
Input for
power contacts
Power contacts
Ethernet RJ45
Address selector
Configuration interface
Ethernet RJ45
10/100 Mbit/s
10/100 Mbit/s
BK9100 | Ethernet TCP/IP Bus Coupler

BK9100 | Ethernet TCP/IP Bus Coupler

The BK9100 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. With the K-bus extension, up to 255 Bus Terminals can be connected.

The Bus Couplers recognize the terminals to which they are connected, and perform the assignment of the inputs and outputs to the words of the process image automatically. The BK9100 Bus Coupler supports 10 Mbit/s and 100 Mbit/s Ethernet. Connection is through normal RJ45 connectors. The IP address is 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.

Unlike the BK9000, the BK9100 has an additional RJ45 port. Both Ethernet ports operate as 2-channel switches. The I/O stations can thus be configured with a line topology, instead of the classic star topology. In many applications this significantly reduces the wiring effort and the cabling costs. The maximum distance between two couplers is 100 m. Up to 20 BK9100 Bus Couplers are cascadable, so that a maximum line length of 2 km can be achieved.

The BK9100 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 BK9100 or BK9050) 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.

Product status:

regular delivery

Product information

Technical dataBK9100
Number of Bus Terminals64 (255 with K-bus extension)
Max. number of bytes fieldbus512 byte input and 512 byte output
Digital peripheral signals512 inputs/outputs
Analog peripheral signals128 inputs/outputs
Configuration possibilityvia KS2000
ProtocolTwinCAT ADS, Modbus TCP, Beckhoff real-time Ethernet
Data transfer rates10/100 Mbit/s, automatic recognition of the transmission rate
Bus interface2 x RJ45 (2-channel switch)
Data transfer medium4 x 2 twisted pair copper cable; category 3 (10 Mbit/s), category 5 (100 Mbit/s)
Power supply24 V DC (-15%/+20%)
Input current70 mA + (total K-bus current)/4, 500 mA max.
Starting current2.5 x continuous current
Recommended fuse≤ 10 A
Current supply K-bus1750 mA
Power contactsmax. 24 V DC/max. 10 A
Electrical isolation500 V (power contact/supply voltage/fieldbus)
Topologyline or star wiring
Cascadingup to 20 BK9100 or max. line length 2 km
Distance between stations100 m between hub/switch and bus coupler or between bus coupler and bus coupler
Weightapprox. 170 g
Operating/storage temperature-25…+60°C/-40…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL, ATEX, IECEx, DNV GL
Ex markingATEX: II 3 G Ex ec IIC T4 Gc
IECEx: Ex ec IIC T4 Gc
Housing dataBKxxxx, BCxxxx
Design formcompact terminal housing with signal LEDs
Dimensions (W x H x D)51 mm x 100 mm x 69 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Stripping length8…9 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

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