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Beckhoff's Bus Terminal Controllers are Bus Couplers with integrated PLC functionality. The BC7300 controller has a fieldbus interface for Modbus, which can be used as a non-central intelligence in the Modbus system. The Bus Terminal Controllers are intelligent slaves. One unit consists of a Bus Terminal Controller, any number of terminals between 1 and 64, and a bus end terminal.
The inputs and outputs of the connected Bus Terminals are assigned in the mini-PLC's default setting. Each Bus Terminal can be configured to exchange 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. Configuration is performed using the KS2000 configuration software. The programming system TwinCAT for the BC7300 operates in accordance with IEC 61131-3. The PLC programs can be written in 5 different programming languages (IL, FBD, LD, SFC, ST).
Supply voltage: 24 V DC; Input current: 70mA + (total K-Bus current)/4 500 mA max; Configuration facility via KS2000 or the controller; Number of Bus Terminals: 64; Digital peripheral signals: 256 inputs/outputs; Analog peripheral signals: 128 inputs/outputs; Baud rate From 150 baud to 38400 baud; Protocol RTU and ASCII
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