BECKHOFF BC8150 RS232 Bus Terminal Controller

SKU BC8150

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12-month warranty
Free returns within 30 days

Manufacturer: BECKHOFF
Product No.: BC8150
Country of origin:Germany
Product Type: Bus Terminal Controllers
Payment: T/T, Western Union
Weight: 100g
Dimensions: 44 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months

Description

The BECKHOFF BC8150 is a compact RS232 Bus Terminal Controller designed to integrate serial communication functionality within the modular Beckhoff Bus Terminal system. Acting as a decentralized controller, this device executes local PLC programs using TwinCAT while maintaining serial communication over an RS232 interface. It provides an efficient platform for localized control and interface adaptation in automated systems.

This controller operates either as a standalone PLC or as a decentralized intelligence unit within a larger automation network. The BECKHOFF BC8150 manages connection with up to 64 Bus Terminals, which can be expanded up to 255 terminals using a K-bus extension. Its flexibility makes it highly suitable for modular machine control, serial data acquisition, and interfacing with third-party serial devices.

Features

Localized PLC functionality programmable with TwinCAT according to IEC 61131-3 standards
Integrated RS232 interface via a standard D-sub connection
Flexible protocol support including KS8000, Modbus RTU, Modbus ASCII, and serial ADS
Integrated address switch for straightforward configuration of Modbus RTU/ASCII communication
Direct control of up to 64 local Bus Terminals, expandable up to 255 terminals with a K-bus extension
Compact terminal housing with signal LEDs for real-time diagnostic and status monitoring
Standard DIN-rail mounting for direct integration into standard electrical cabinets

Applications

Decentralized machine control requiring localized processing and RS232 serial communication
Serial data acquisition networks connecting to barcode readers, industrial scales, and sensors
Modbus RTU or Modbus ASCII fieldbus node integration
Modular terminal system expansion within compact automation environments

Technical Specifications

General

Parameter	Specification
Manufacturer	BECKHOFF
Model	BC8150
Product Type	RS232 Bus Terminal Controller
Housing Material	Polycarbonate
Dimensions (W x H x D)	44 mm x 100 mm x 68 mm
Weight	approx. 100 g
Protection Class	IP20
Installation Position	Variable

Controller Performance

Parameter	Specification
Programming Software	TwinCAT (via programming interface or fieldbus)
Program Memory	48 kbytes
Data Memory	32 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 Support	Yes
Max. Process Image Bytes	512 byte input and 512 byte output
Max. Local Bus Terminals	64 (up to 255 with K-bus extension)

Electrical and Communication

Parameter	Specification
Power Supply Voltage	24 V DC (-15 % / +20 %)
Max. Input Current	320 mA
K-bus Current Supply	1750 mA
Max. Power Contacts Current	10 A
Electrical Isolation	Max. 24 V DC / Max. 10 A
Bus Interface	RS232 D-sub
Supported Protocols	KS8000, Modbus RTU, Modbus ASCII, serial ADS
Data Transfer Rates	1.2 kbaud to 38.4 kbaud

Environmental and Certifications

Parameter	Specification
Operating Temperature	-25 to +60 degC
Storage Temperature	-40 to +85 degC
Relative Humidity	95 %, non-condensing
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
Approvals and Markings	CE, UL, ATEX
Ex Marking	II 3 G Ex nA IIC T4 Gc

Connections / Interfaces

Interface or Terminal	Function
RS232 (D-sub)	Serial interface connection for fieldbus communication and parameterization
K-bus Connection	Direct mechanical and electrical interfacing with Beckhoff Bus Terminals
Power Contacts	Field-side power supply distribution across the terminal strip

Installation Guidelines

Ensure all power sources are completely disconnected and de-energized before mounting, configuring, or wiring the controller.
Mount the BECKHOFF BC8150 onto a standard 35 mm DIN rail (conforming to EN 60715) until the lock mechanism clicks securely.
Install adjacent Bus Terminals using the side-by-side double slot and key connection system.
Strip wiring to 8–9 mm and connect to the spring-actuated terminal blocks using a suitable screwdriver tool. Ensure solid or flexible conductor cross-sections conform to specifications (0.08 to 2.5 mm²).
Connect the 24 V DC power supply to the terminals, noting correct polarity and matching the 10 A maximum power contact limitations.
Connect the RS232 D-sub serial cable securely to the integrated interface.
Set the address switch to configure Modbus RTU, Modbus ASCII, or other protocol modes before powering up the system.
Turn on power and observe the diagnostic LEDs to verify correct startup and operation of the internal K-bus communication.

FAQ

How is the BECKHOFF BC8150 controller programmed?

The BECKHOFF BC8150 controller is programmed using TwinCAT software via its programming interface or fieldbus, conforming to IEC 61131-3 standards across languages such as ST, LD, and FBD.

What communication protocols are supported by the BECKHOFF BC8150?

The BECKHOFF BC8150 supports the open serial KS8000 protocol, Modbus RTU, Modbus ASCII, and serial ADS, with protocol selection configurable via built-in address switches.

How many Bus Terminals can the BECKHOFF BC8150 support?

The BECKHOFF BC8150 can directly interface with up to 64 Bus Terminals, and can be expanded up to 255 total terminals with the integration of a K-bus extension system.

What is the maximum K-bus current supply of the BECKHOFF BC8150?

The BECKHOFF BC8150 provides a maximum current supply of 1750 mA to the internal K-bus for powering connected Bus Terminals.

Does the BECKHOFF BC8150 have hazardous area certifications?

The BECKHOFF BC8150 carries ATEX approval with the Ex marking II 3 G Ex nA IIC T4 Gc, making it suitable for specific Zone 2 hazardous locations.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

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