Executing local control logic while maintaining high-speed fieldbus communications, the BECKHOFF BC7300 serves as a decentralized programmable controller that seamlessly bridges serial Modbus networks and modular I/O terminals. This compact controller integrates a complete PLC runtime system conforming to IEC 61131-3, allowing local preprocessing of signals independent of the master control system. Capable of hosting up to 64 Bus Terminals, the device optimizes distributed topologies by managing up to 256 digital or 128 analog inputs and outputs directly on the K-bus assembly.
The integrated RS485 D-sub interface supports both Modbus RTU and ASCII protocols, facilitating straightforward integration into legacy SCADA, DCS, or third-party PLC architectures. Configured using TwinCAT programming environments, the device features robust electrical isolation and a dedicated internal power supply to drive connected terminal modules reliably under harsh industrial conditions.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | BC7300 |
| Fieldbus Interface | D-sub 9-pin, RS485 |
| Supported Protocols | Modbus RTU, Modbus ASCII (Default: RTU) |
| Data Transfer Rates | 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 baud |
| Programming Software | TwinCAT (via programming interface or fieldbus) |
| Program Memory | 32 / 96 kbytes |
| Data Memory | 32 / 64 kbytes |
| Remanent Data | 512 bytes |
| K-Bus Current Supply | 1750 mA |
| Power Contacts | Max. 24 V DC / Max. 10 A |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| ATEX Ex Marking | II 3 G Ex nA IIC T4 Gc |
| Physical Dimensions | 51 mm x 100 mm x 69 mm |
| Product Weight | 170 g |
| Shipping Weight (Calculated) | 3.0 kg (with heavy-duty industrial protective packaging) |
| D-sub 9-Pin Pinout | Signal Designation | Description |
|---|---|---|
| Pin 3 | RxD/TxD-B (+) | Transmit / Receive Data (Positive) |
| Pin 8 | RxD/TxD-A (-) | Transmit / Receive Data (Negative) |
| Pin 5 | GND | Signal Ground Reference |
| Pin 1 | Shield | Functional Earth / Shield Connection |
While the BC7300 targets serial Modbus RTU/ASCII applications, systems transitioning to Ethernet infrastructures should consider the BC9000 (Modbus/TCP). When upgrading legacy setups, ensure that the TwinCAT target system configuration matches the target BC architecture, as compiling for BK-type couplers is incompatible with BC programmable controllers.
The BC7300 features a maximum K-Bus current supply capacity of 1750 mA. When configuring a dense physical node with multiple analog or special function terminals, calculate the cumulative current consumption of all modules. If the requirements exceed 1750 mA, you must integrate intermediate power feed terminals (such as the KL9110 or KL9210) to prevent dropouts on the internal bus.
Always verify that the termination resistor on the Modbus RS485 physical line is correctly switched or wired. Because the BC7300 reads rotary switch station addresses only during its initial boot phase, any physical modifications made to the node address while powered will not take effect until the device undergoes a complete power cycle.
Isolate all electrical power sources before initiating hardware installation, wire termination, or terminal block removal. Failure to de-energize primary supply circuits and physical contacts can result in permanent equipment damage, short circuits, or electrical shock hazards to commissioning engineers.
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Manufacturer: BECKHOFF
Product No.: BC7300
Country of origin:Germany
Product Type: Modbus Bus Terminal Controllers
Payment: T/T, Western Union
Weight: 3000g
Dimensions: 51 mm x 100 mm x 69 mm
Shipping port: Xiamen
Warranty: 12 months
Executing local control logic while maintaining high-speed fieldbus communications, the BECKHOFF BC7300 serves as a decentralized programmable controller that seamlessly bridges serial Modbus networks and modular I/O terminals. This compact controller integrates a complete PLC runtime system conforming to IEC 61131-3, allowing local preprocessing of signals independent of the master control system. Capable of hosting up to 64 Bus Terminals, the device optimizes distributed topologies by managing up to 256 digital or 128 analog inputs and outputs directly on the K-bus assembly.
The integrated RS485 D-sub interface supports both Modbus RTU and ASCII protocols, facilitating straightforward integration into legacy SCADA, DCS, or third-party PLC architectures. Configured using TwinCAT programming environments, the device features robust electrical isolation and a dedicated internal power supply to drive connected terminal modules reliably under harsh industrial conditions.
| Parameter | Specification Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Number | BC7300 |
| Fieldbus Interface | D-sub 9-pin, RS485 |
| Supported Protocols | Modbus RTU, Modbus ASCII (Default: RTU) |
| Data Transfer Rates | 150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 baud |
| Programming Software | TwinCAT (via programming interface or fieldbus) |
| Program Memory | 32 / 96 kbytes |
| Data Memory | 32 / 64 kbytes |
| Remanent Data | 512 bytes |
| K-Bus Current Supply | 1750 mA |
| Power Contacts | Max. 24 V DC / Max. 10 A |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| ATEX Ex Marking | II 3 G Ex nA IIC T4 Gc |
| Physical Dimensions | 51 mm x 100 mm x 69 mm |
| Product Weight | 170 g |
| Shipping Weight (Calculated) | 3.0 kg (with heavy-duty industrial protective packaging) |
| D-sub 9-Pin Pinout | Signal Designation | Description |
|---|---|---|
| Pin 3 | RxD/TxD-B (+) | Transmit / Receive Data (Positive) |
| Pin 8 | RxD/TxD-A (-) | Transmit / Receive Data (Negative) |
| Pin 5 | GND | Signal Ground Reference |
| Pin 1 | Shield | Functional Earth / Shield Connection |
While the BC7300 targets serial Modbus RTU/ASCII applications, systems transitioning to Ethernet infrastructures should consider the BC9000 (Modbus/TCP). When upgrading legacy setups, ensure that the TwinCAT target system configuration matches the target BC architecture, as compiling for BK-type couplers is incompatible with BC programmable controllers.
The BC7300 features a maximum K-Bus current supply capacity of 1750 mA. When configuring a dense physical node with multiple analog or special function terminals, calculate the cumulative current consumption of all modules. If the requirements exceed 1750 mA, you must integrate intermediate power feed terminals (such as the KL9110 or KL9210) to prevent dropouts on the internal bus.
Always verify that the termination resistor on the Modbus RS485 physical line is correctly switched or wired. Because the BC7300 reads rotary switch station addresses only during its initial boot phase, any physical modifications made to the node address while powered will not take effect until the device undergoes a complete power cycle.
Isolate all electrical power sources before initiating hardware installation, wire termination, or terminal block removal. Failure to de-energize primary supply circuits and physical contacts can result in permanent equipment damage, short circuits, or electrical shock hazards to commissioning engineers.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|
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