DeviceNet Bus Couplers BK5200, BK5210, BK5220
Power LEDs
Bus Coupler
Input for
power contacts
Power contacts
Fieldbus connection
Address selector
Configuration interface

BK5200, BK5210, BK5220 | DeviceNet Bus Couplers

DeviceNetThe BK5200, BK5210 and BK5220 Bus Couplers connect the DeviceNet bus system to the electronic terminal blocks, which can be extended in modular fashion. One unit consists of one Bus Coupler, any number of up to 64 terminals and one end terminal. The BK5210 "Economy" variant permits particularly economical creation of peripheral interfacing connections. Up to 64 digital input/output terminals can be connected.

With the K-bus extension technology, the “Economy plus” Bus Coupler BK5220 allows the connection of up to 255 spatially distributed Bus Terminals to one Bus Coupler. The “Economy plus” series supports all Beckhoff system Bus Terminals and it can process in its full configuration 1,020 digital signals and a maximum of 256 analog input and output channels per slave.

The Bus Coupler operates on the basis of the CAN protocol. The DeviceNet standard on which the BK52x0 Bus Coupler is based allows the operation of diverse DeviceNet devices in one network. DeviceNet is based on a definition of communication objects for the exchange of data from the sensor/actuator area that is especially oriented to automation technology.

The Bus Couplers and Bus Terminals can be parameterised on a PC using the KS2000 configuration set. Commissioning is also possible without the KS2000. Corresponding EDS data files are available for DeviceNet configuration tools.


System data DeviceNet | BK5200, BK5210, BK5220
Number of I/O stations 64
Data transfer medium screened, twisted copper wire with power supply, 5-pin
Max. cable length
500 m 250 m 100 m
Data transfer rates
125 kbaud 250 kbaud 500 kbaud
Operating modes bit strobe, polling, cyclic, change of state (COS)
DeviceNet type communications adapter
Technical data BK5200 BK5210 BK5220
Number of Bus Terminals 64 64 64 (255 with K-bus extension)
Max. number of bytes fieldbus 512 byte input and 512 byte output 32 byte input and 32 byte output 512 byte input and 512 byte output
Digital peripheral signals 512 inputs/outputs 256 inputs/outputs 1,020 inputs/outputs
Analog peripheral signals 256 inputs/outputs 256 inputs/outputs
Configuration possibility via KS2000 or the controller
Data transfer rates via Dip switch via Dip switch automatic detection
Bus interface 1 x open pluggable connector, 5-pin, included
Power supply 24 V DC (-15 %/+20 %), through bus cable 11…25 V (conforms to DeviceNet specification)
Input current 70 mA + (total K-bus current)/4, 500 mA max.
Starting current approx. 2.5 x continuous current
Recommended fuse ≤ 10 A
Current supply K-bus 1750 mA 500 mA 1750 mA
Power contacts 24 V DC max./10 A max.
Electrical isolation 500 V (power contact/supply voltage Bus Coupler)
Weight approx. 150 g approx. 130 g approx. 130 g
Operating/storage temperature 0…+55 °C/-25…+85 °C 0…+55 °C/-25…+85 °C -25…+60 °C/-40…+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 CE, UL, Ex CE, UL, Ex, GL CE, UL, Ex, GL
KS2000 configuration software for extended parameterisation
Cordsets cordsets and connectors
FC5201 | FC5202 DeviceNet PCI fieldbus cards
Ordering information Description
BK5200 DeviceNet Bus Coupler for up to 64 Bus Terminals
BK5210 DeviceNet Bus Coupler for up to 64 digital Bus Terminals
BK5220 DeviceNet “Economy plus” Bus Coupler for up to 64 Bus Terminals (255 with K-bus extension)
BK5250 DeviceNet “Compact” Bus Coupler for up to 64 Bus Terminals (255 with K-bus extension)
LC5200 DeviceNet “Low Cost” Bus Coupler for up to 64 digital Bus Terminals (255 with K-bus extension)
BC5250 DeviceNet “Compact” Bus Terminal Controller for up to 64 Bus Terminals (255 with K-bus extension)
DeviceNet For further DeviceNet products please see the system overview