BC5150 Beckhoff
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The Beckhoff BC5150 is part of the BC Bus Terminals series and features a CANopen fieldbus interface. It includes a program memory of 48 kbyte, a data memory of 32 kbyte, and 128 kbyte of source code memory. The device supports up to 255 bus terminals and measures 100 mm in height and 68 mm in depth.
Internal Product Review
The BC5150 is a Beckhoff BC Bus Terminal controller with a CANopen fieldbus interface and a COM1 serial interface. Support for up to 255 bus terminals and 2048 bytes of PLC input data gives the unit impressive flexibility in distributed automation layouts. A 48 kbyte program memory makes the platform a very capable choice for compact PLC control.
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Product Description:
The BC5150 is a compact programmable Bus Terminal Controller manufactured by Beckhoff as part of the BC Bus Terminals series. It functions as both a PLC and a communication gateway, connecting a stack of modular I/O terminals to a higher-level control network. The controller also executes localized logic required for distributed motion, sensing, and general machine control in industrial automation environments.
The controller holds 32 kbyte of data memory that buffers variables during each scan cycle. User instructions reside in a dedicated program space of 48 kbyte, permitting sizable state machines and arithmetic routines to run on the device. A separate source code store of 128 kbyte keeps commented projects on board for later retrieval. Individual variable objects may occupy up to 16 kbyte, placing limits on array or structure sizes without constraining typical PLC tasks. Communication with plant-wide networks is provided through a built-in CANopen fieldbus interface, enabling direct participation in networks with CiA-compliant motion drives, sensors, and other distributed nodes.
Up to 255 Beckhoff Bus Terminals can be mounted to the right of the controller, and the internal K-bus adds only 68 mm of panel depth. The IEC 61131 runtime supplies an input process image of 2048 bytes to the single PLC task and maps an equally sized output image back to the terminals after execution. A retain segment of 2 kbyte preserves selected variables through a power loss so counters and configuration parameters remain available after a restart. Online changes allow logic updates without halting production, reducing interruptions when control routines require adjustment. The housing has a height of 100 mm, aligning with standard DIN-rail spacing while leaving the front-mounted COM1 serial port and power connectors accessible for configuration and diagnostics.
