CC-Link “Compact” Bus Coupler BK7150
Status display
power LEDs
Bus Coupler
Input for
power contacts
Power contacts
Fieldbus connection
Baud rate selector
Configuration interface
Address selector
Address selector

BK7150 | CC-Link “Compact” Bus Coupler

CC-LinkThe “Compact” Bus Coupler BK7150 connects the CC-Link system to the electronic terminal blocks, which can be extended in modular fashion. One unit consists of the Bus Coupler, any number of up to 64 terminals and one end terminal. The K-bus extension technology allows the connection of up to 255 spatially distributed Bus Terminals to one Bus Coupler.

The Bus Coupler recognizes the connected terminals and automatically generates the affiliations of the inputs/outputs to the bytes of the process image. The first input/output signal is inserted in the first bit of one byte (LSB), beginning from the left. The Bus Coupler inserts further signals in this byte. Inputs and outputs are clearly separated. The Bus Coupler automatically begins a further byte if the number of controller inputs or outputs exceeds 8 bits.

CC-Link is an open fieldbus system. Baud rates up to 10 Mbaud can be selected via a switch, so that the transfer speed can be adapted to the requirement of the technical process.

System data CC-Link | BK7150
Number of I/O stations 64 (per link)
Number of I/O points depending on controller
Data transfer medium shielded 3-core, twisted pair cable
Max. cable length
1,200 m 900 m 400 m 160 m 100 m
Data transfer rates
156 kbaud 625 kbaud 2.5 Mbaud 5 Mbaud 10 Mbaud
Technical data BK7150
Number of Bus Terminals 64 (255 with K-bus extension)
Max. number of bytes fieldbus 32 byte input and 32 byte output
Digital peripheral signals 112 inputs/outputs
Analog peripheral signals 16 inputs/outputs
Configuration possibility via KS2000
Data transfer rates 156 kbaud…10 Mbaud
Bus interface 1 x open style connector, 5-pin, included
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 1000 mA
Power contacts max. 24 V DC/max. 10 A
Electrical isolation 500 V (power contact/supply voltage/fieldbus)
Weight approx. 100 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals/markings CE, UL, ATEX
Ex marking II 3 G Ex nA IIC T4 Gc
KS2000 configuration software for extended parameterisation
Cordsets cordsets and connectors