| 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 |
Beckhoff BK3150: Profibus DP Bus Terminal Controller / Compact Bus Coupler
The Beckhoff BK3150 is a state-of-the-art Profibus DP Bus Coupler designed to form the core of a highly flexible and modular I/O system. As a Bus Terminal Controller for the Beckhoff Bus Terminal (BT) and EtherCAT Terminal (EL/ET) series, it acts as the gateway between your central Profibus master and a wide array of digital, analog, and special function I/O modules.
This compact bus coupler is the ideal solution for decentralizing your control cabinet, reducing wiring costs, and achieving a scalable machine architecture. It brings the power and versatility of Beckhoff’s renowned I/O system to the widely adopted Profibus network.
Key Features and Technical Specifications
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Fieldbus System: Profibus DP according to IEC 61158/EN 50170, supporting baud rates up to 12 Mbaud.
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I/O Connectivity: Connects up to 256 bytes of input and 256 bytes of output data across a virtually unlimited number of I/O terminals (practical limits apply).
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Modular Design: Supports the entire range of Beckhoff Bus Terminals, allowing for the mixing of digital, analog, serial, and other specialized signals on a single, compact bus station.
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K-Bus Cycle Time: Features a fast internal bus cycle for efficient communication with all connected I/O terminals.
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Diagnostics: Comprehensive diagnostic capabilities including power monitoring, bus failure indication, and module-specific error reporting via LEDs and the Profibus telegram.
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Compact Form Factor: Designed for high-density mounting on standard DIN rail, saving valuable control cabinet space.
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Power Supply: 24 V DC operating voltage (typ. 500 mA K-bus current for the connected terminals).
Primary Applications
The BK3150 Profibus Bus Coupler is perfectly suited for a vast range of automation applications, including:
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Decentralized Periphery (DP) Systems: Extending I/O points close to sensors and actuators on the machine.
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Machine Automation: Packaging, plastic molding, assembly, and material handling systems.
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Process Control: Integration of analog signals and serial communication for monitoring and control.
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Plant Modernization: Easily integrating modern, modular I/O into existing Profibus-based factory infrastructures.
