BC5250

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The BC5250 is a programmable bus terminal that includes a 24 V DC power supply with an input current of 320 mA max. Manufactured by Beckhoff as part of their BC Bus Terminals series, it supports 64 bus terminals, expandable to 255 with the K-bus extension. It features automatic data transfer rates up to 500 kbaud.

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Product Description:

Beckhoff is the manufacturer of BC5250 Bus Terminal. The module is a reliable and efficient solution for industrial automation applications. Belonging to BC Bus Terminals Series, the terminal is compact and durable and is designed for an effective operation.

The BC5250 bus terminal is relatively lightweight as it weighs only 100 g which facilitates easy mounting or integration into compact systems. The data that can be communicated over the fieldbus at once is 512 bytes input and 512 bytes output. The module offers a traditional communication port used for programming/configuration with flexibility in baud rates. The terminal is programmable using Beckhoff’s TwinCAT software which is common in automation and industrial systems. It has an open style connector with 5 pins which is used for connecting to the bus network. It comes with a 16 bit micro controller which controls the logic and operations of the terminal. The module has a total 64 number of bus terminals which allows connection of multiple I/O terminals, and are expandable to 255 with K-bus extension. It conforms to EN 61000-6-2 and EN 61000-6-4 which ensures it meets electromagnetic compatibility standards.

The BC5250 bus terminal can withstand industrial vibration and mechanical shock and it has flexibility to configure using TwinCat software or the controller. The PLC of this module is able to handle 2048 input / 2048 output data. The terminal has an IP20 rating which offers basic protection against fingers or large objects. The communication protocol used for industrial networking is devicenet which is popular for real time automation. It is able to withstand 500V isolation, which ensures safety against voltage surges or insulation failures. It is designed to accept DC voltage in the range 24 V (-15 % /+20 %).

Analog Peripheral Signals
128 inputs/outputs
Bus Interface
open style connector, 5-pin
Configuration Possibility
via KS2000 or fieldbus
Current Supply K-bus
1750 mA
Data Transfer Rates
automatic detection up to 500 kbaud
Digital Peripheral Signals
512 inputs/outputs
Input Current
320 mA max.
Max. Number Of Bytes Fieldbus
512 byte input and 512 byte output
Max. Number Of Bytes Process Image
512 byte input and 512 byte output
Number Of Bus Terminals
64 (255 with K-bus extension)
Operating Temperature
-25…+60°C
Power Contacts
max. 10 A
Power Supply
24 V DC (-15%/+20%)
Serial Interface
programming and configuration interface

Frequently Asked Questions about BC5250:

Q: How does the 16-bit microcontroller benefit the performance of the BC5250 module?

A: The 16-bit microcontroller in the BC5250 allows faster processing and reliable execution of automation logic. It ensures efficient real-time control across connected peripherals.

Q: Why is TwinCAT PLC important in configuring the BC5250 Bus Terminal?

A: TwinCAT PLC provides an intuitive programming interface and supports real-time task execution. It ensures seamless integration with Beckhoff systems and flexible customization.

Q: How does K-bus extension enhance the scalability of the BC5250 Bus Terminal?

A: The K-bus extension allows the BC5250 to connect up to 255 terminals. This supports large-scale installations without needing additional controllers.

Q: Why is IP20 protection class suitable for BC5250 in cabinet installations?

A: IP20 ensures safety from accidental contact with internal components. The BC5250 is designed for environments where full enclosure protection is provided externally.

Q: How does automatic baud rate detection improve usability in BC5250 Bus Terminal?

A: Automatic baud rate detection enables seamless communication setup over RS232 without manual configuration. It simplifies initial deployment and reduces setup time.


Internal Product Review

  • ‘‘The BC5250 Bus Terminal by Beckhoff is a compact, high-performance module ideal for complex control systems. With 512 digital I/O, RS232 serial interface, TwinCAT PLC compatibility, and 24 VDC power input tolerance, it ensures flexible deployment. BC5250 supports DeviceNet communication and up to 255 K-bus expansions.’’

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