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Beckhoff BC3150

Render Technology Solutions deal with all kinds of Beckhoff Products


Render Technology Solutions deal with all kinds of Beckhoff Products

Beckhoff BC3150 Compact Bus terminal Controller 48-KB PROFIBUS

The Bus Terminal Controllers BC3100 and BC3150 are Bus Couplers with integrated PLC functionality and have a fieldbus interface for PROFIBUS. They are intelligent slaves and can be used as distributed intelligence in the PROFIBUS system. In the BC3100 Bus Terminal Controller, one unit consists of the controller, between 1 and 64 terminals, and a bus end terminal.

The Compact” BC3150 Bus Terminal Controller is housed in a cost-optimised and compact housing. Unlike the BC3100, the BC3150 supports up to 255 Bus Terminals via the K-bus extension. Both PROFIBUS controllers offer automatic baud rate detection up to 12 Mbaud and two address selection switches for address assignment.

The Bus Terminal Controller is programmed using the TwinCAT programming system according to IEC 61131-3. The configuration/programming interface of the BC31xx is used to load the PLC program. If the software PLC TwinCAT is in use, the PLC program can also be loaded via the fieldbus. The inputs and outputs of the connected Bus Terminals are assigned in the default setting of the PLC. Each Bus Terminal can be configured in such a way that it exchanges data directly through the fieldbus with the higher-level automation device. Similarly, pre-processed data can be exchanged between the Bus Terminal Controller and the higher-level controller via the fieldbus.

Controller for distributed signal processing

The programming system TwinCAT for the BC3100 and BC3150 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.


Beckhoff BC3150

Beckhoff BC3150 | PROFIBUS Bus Terminal Controller


PLC data BC3150
Programming TwinCAT (via programming interface or fieldbus)
Program memory 48 kbytes
Data memory 32 kbytes
Remanent data 2 kbytes
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 yes
Technical data BC3150
Number of Bus Terminals 64 (255 with K-bus extension)
Max. number of bytes fieldbus 128 byte input and 128 byte output
Max. number of bytes process image 512 byte input and 512 byte output
Digital peripheral signals 2,040 inputs/outputs
Analog peripheral signals 128 inputs/outputs
Configuration possibility via KS2000 or fieldbus
Data transfer rates automatic detection up to 12 Mbaud
Bus interface 1 x D-sub socket, 9-pin
Power supply 24 V DC (-15 %/+20 %)
Input current 320 mA max.
Starting current 2.5 x continuous current
Current supply K-bus 1750 mA
Power contacts max. 24 V DC/max. 10 A
Electrical isolation 500 V (power contact/supply voltage)
Weight approx. 100 g
Operating/storage temperature -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