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BC4000 | Interbus Bus Terminal Controller

The Bus Terminal Controller BC4000 is a Bus Coupler with integrated PLC functionality and has a fieldbus interface for the Interbus. The BC4000 is an intelligent slave and can be used as a decentralised intelligence in the Interbus system. Interbus has been established as an open fieldbus system since 1987. It has a ring structure, and up to 256 stations can be operated in a ring. Data transmission takes place at 500 kbaud. Therefore sensor and actuator data can be transferred over great distances.

One unit consists of the Bus Terminal Controller, any number of terminals between 1 and 64, and a bus end terminal. The Bus Terminal Controller is programmed using the TwinCAT programming system according to IEC 61131-3. The configuration and programming interface on the BC4000 is used to load the PLC program.

The controller recognises 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 word (LSB), beginning from the left. The controller inserts further signals in this word. Inputs and outputs are clearly separated. The controller automatically begins a further word if the number of inputs or outputs exceeds 16 bits.

Controller for distributed signal processing

The programming system TwinCAT for the BC4000 operates, independently of the manufacturer, in accordance with IEC 61131-3. The PLC programs can be written in five different programming languages (IL, FBD, LD, SFC, ST). In addition, TwinCAT offers extensive debug functionalities (breakpoint, single step, monitoring, …), which facilitate commissioning. It is also possible to perform adjustment and measurement of the cycle time.

PLC dataInterbus | BC4000
Programming TwinCAT (via programming interface or fieldbus)
Program memory 32/96 kbytes
Data memory 32/64 kbytes
Remanent data 508 bytes
Runtime system 1 PLC task
PLC cycle time approx. 3 ms for 1,000 instructions (without I/O cycle, K-bus)
Programming languages IEC 61131-3 (IL, LD, FBD, SFC, ST)
Online change

 

Technical dataBC4000
Number of Bus Terminals 64
Max. number of bytes fieldbus 64 byte input and 64 byte output
Max. number of bytes process image 512 byte input and 512 byte output
Digital peripheral signals 512 inputs/outputs
Analog peripheral signals 128 inputs/outputs
Configuration possibility via KS2000
Data transfer rates 500 kbaud
Bus interface 2 x D-sub plug, 9-pin, plug and socket with screening and vibration lock
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 1,750 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 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 CE, UL, Ex

 

Accessories 
KS2000 configuration software for extended parameterisation
TwinCAT PLC programming system conforms to IEC 61131-3
Cordsets cordsets and connectors

 

Ordering informationDescription
BC4000 Interbus Bus Terminal Controller for up to 64 Bus Terminals
BK4xx0 Interbus Bus Coupler

 

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