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- Backplane Extension Cable
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- 0.8 meters
- 3 kg
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Product Overview
The Schneider BMXXBC008K Backplane Extension Cable is an industrial automation cable designed to support backplane extension and interconnection functions within compatible Schneider Electric Modicon control systems. As a dedicated connection component, the BMXXBC008K helps extend the communication or electrical interconnection between automation system assemblies while maintaining an organized and serviceable control-system architecture.
Backplane extension is an important requirement in modular PLC systems where control components cannot always be installed directly beside one another. Depending on the system architecture, an extension cable can allow compatible racks, backplanes, or associated assemblies to be positioned at a practical distance while maintaining the required connection between them.
The Schneider BMXXBC008K has a cable length of 0.8 meters, providing a compact extension option for installations where a short separation between compatible system components is required. The supplied shipping weight is 3 kg, which should be understood as a logistics or packaging-related value rather than the net weight of the cable itself.
The exact electrical characteristics, connector configuration, supported communication architecture, and compatible backplane equipment should be verified against the specific Schneider Electric automation platform before installation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | BMXXBC008K |
| Product Type | Backplane Extension Cable |
| Product Family | Modicon Industrial Automation |
| Primary Function | Backplane extension and system interconnection |
| Cable Length | 0.8 meters |
| Shipping Weight | 3 kg |
| Installation | Compatible Schneider Electric automation equipment |
| Application | Modular PLC and industrial control systems |
| Connection Type | Backplane extension connection |
| Typical Use | Rack/backplane interconnection and system expansion |
Note: The 3 kg value is specified as shipping weight and should not be interpreted as the cable’s actual net weight.
What Is the Schneider BMXXBC008K?
The BMXXBC008K is a Schneider Electric Backplane Extension Cable intended to connect compatible automation system assemblies when a direct backplane arrangement is not practical.
Modular PLC systems are generally built from several interconnected components. These can include processors, power supplies, input/output modules, communication modules, and other specialized devices. The physical arrangement of these components is often determined by cabinet space, machine layout, wiring requirements, environmental considerations, and maintenance accessibility.
A backplane extension cable can provide greater flexibility when the system needs to be arranged across separate compatible assemblies.
A simplified architecture can be represented as:
PLC Backplane / Rack → BMXXBC008K → Extended Backplane / Compatible Assembly
The actual topology depends on the specific Schneider Electric system and the components being interconnected.
Function of a Backplane Extension Cable
The primary role of the BMXXBC008K is to provide an extension connection between compatible automation system assemblies.
In a modular PLC architecture, the backplane provides an organized electrical and communication structure through which installed modules interact with the control system. When additional physical separation is required, a dedicated extension cable can maintain the required interconnection without forcing every module into a single compact rack arrangement.
The BMXXBC008K can therefore contribute to:
- Backplane extension
- Rack interconnection
- Modular system expansion
- Cabinet layout flexibility
- Distributed equipment arrangement
- Industrial control-system integration
- Maintenance accessibility
- Control-panel organization
The precise functions supported by the cable depend on the host platform and the equipment to which it is connected.
How the BMXXBC008K Fits Into a PLC System
A modern industrial PLC system typically contains multiple hardware layers.
For example:
Power Supply → PLC CPU → Backplane → I/O Modules → Field Devices
When an extended system arrangement is required, the architecture can include a dedicated interconnection cable:
Main Backplane → BMXXBC008K → Extended Backplane → Additional Modules
This allows system designers to arrange compatible components according to cabinet space and application requirements.
The BMXXBC008K itself does not execute application logic, process analog values, or directly control field devices. Instead, it serves as an infrastructure component that supports the physical and electrical interconnection of the automation system.
Industrial Applications
The Schneider BMXXBC008K can be used in compatible industrial automation installations where modular PLC equipment requires a backplane extension.
Potential application environments include:
Manufacturing Automation
Production machinery often contains multiple control cabinets or equipment sections. A backplane extension cable can help provide the required interconnection between compatible assemblies.
Process Automation
Industrial process systems may contain distributed control hardware arranged according to equipment zones or cabinet layouts.
Machine Automation
Large machines may require control modules to be arranged in locations that cannot be accommodated by a single compact rack.
Material Handling
Conveyor and material-handling systems can benefit from flexible control-panel layouts where automation hardware must be arranged around mechanical equipment.
Water and Utility Systems
Pump stations, treatment systems, and utility installations can contain distributed control equipment that requires organized interconnection.
Industrial Control Cabinets
The BMXXBC008K can also support cabinet designs where physical separation between compatible backplane assemblies is necessary.
Cable Length and System Layout
The specified cable length of the BMXXBC008K is 0.8 meters.
This relatively short length can be useful when compatible system assemblies need to be positioned with a limited physical separation.
During cabinet design, engineers should consider:
- Distance between connected assemblies
- Cable routing
- Minimum bend requirements
- Connector accessibility
- Cabinet door clearance
- Mechanical interference
- Separation from high-power wiring
- Maintenance access
- Strain on connectors
The cable should be routed in a manner that avoids unnecessary mechanical stress.
Although the BMXXBC008K provides 0.8 meters of cable length, the usable routing distance may be less depending on the cabinet arrangement and the required bend path.
Installation Guidelines
Correct installation is important for maintaining reliable system communication and avoiding mechanical damage.
Verify the Part Number
Before installation, confirm that the cable is the correct Schneider BMXXBC008K model for the intended automation system.
Inspect the Cable
Before connection, inspect the cable for:
- Damaged insulation
- Bent or damaged connectors
- Cuts or abrasion
- Contamination
- Signs of excessive bending
- Packaging or transportation damage
Verify the Connected Equipment
Both ends of the cable should be connected only to compatible equipment.
The correct connector orientation should be confirmed before insertion. Do not force a connector into an incompatible interface.
Route the Cable Properly
The 0.8-meter cable should be routed without sharp bends, excessive tension, or unnecessary mechanical loading.
Avoid routing the cable directly alongside high-power conductors when system installation requirements call for separation.
Secure the Cable
Where appropriate, cable routing hardware should be used to prevent excessive movement or vibration from being transferred to the connectors.
Commissioning and System Verification
After installation, the extended automation system should be inspected before normal operation.
A practical commissioning procedure can include:
- Confirm the BMXXBC008K part number.
- Verify the compatibility of the connected backplanes or assemblies.
- Inspect both connectors.
- Confirm that the cable is correctly seated.
- Check cable routing and mechanical clearance.
- Energize the control system according to the approved startup procedure.
- Check controller and module status indicators.
- Verify that the connected modules are recognized correctly.
- Check the relevant controller diagnostics.
- Perform a functional test of the complete PLC system.
If the connected system does not operate correctly, troubleshoot the entire interconnection path rather than immediately assuming that the cable is defective.
Troubleshooting the BMXXBC008K
A backplane extension cable can contribute to system communication or module-recognition problems if it is incorrectly installed or physically damaged.
Extended Modules Are Not Recognized
If modules connected through the extended arrangement are not detected, check:
- BMXXBC008K part number
- Cable connections
- Connector seating
- Backplane compatibility
- Power supply status
- Controller diagnostics
- Cable condition
- System configuration
A missing module can result from problems elsewhere in the system, so the cable should not be considered the only possible cause.
Intermittent Communication
Intermittent behavior may be associated with:
- Loose connectors
- Mechanical vibration
- Cable damage
- Excessive cable movement
- Electrical interference
- Incorrect system configuration
- Backplane problems
Inspecting the physical connection and cable routing is an important first step.
System Fails After Cable Installation
If the system worked correctly before the extension cable was installed but fails afterward, check:
- Correct cable model.
- Correct connector orientation.
- Proper connector seating.
- Compatibility of the connected assemblies.
- Power and grounding conditions.
- Controller diagnostics.
- Configuration of the extended system.
Visible Cable Damage
If the cable has damaged insulation, crushed sections, exposed conductors, or damaged connectors, it should be removed from service and replaced according to the plant’s maintenance procedure.
Maintenance Recommendations
The BMXXBC008K is generally a low-maintenance component, but regular inspection can help prevent unexpected system interruptions.
Inspect Cable Routing
Ensure that the cable remains free from excessive tension, sharp bends, abrasion, or mechanical interference.
Check Connectors
During scheduled maintenance, inspect connector seating and physical condition.
Monitor System Diagnostics
Unexpected module communication or recognition faults should be investigated promptly.
Protect Against Mechanical Stress
Avoid using the cable as a mechanical support or allowing its weight or movement to place unnecessary stress on the connectors.
Maintain Spare-Part Identification
Keep the complete BMXXBC008K part number in maintenance documentation to prevent accidental substitution with an incompatible cable.
Replacement Considerations
When replacing a Schneider BMXXBC008K, the complete model number should be verified.
Important identification information includes:
- Manufacturer
- Model number
- Cable type
- Cable length
- Connector configuration
- Host PLC platform
- Backplane type
- System architecture
- Existing installation arrangement
The 0.8-meter cable length should also be checked to ensure that the replacement can follow the existing routing path.
Physical similarity alone should not be used to determine compatibility because industrial automation cables can have similar appearances while serving different electrical or communication functions.
System Integration Considerations
The BMXXBC008K should be considered as part of a complete automation system.
Typical associated equipment may include:
| Component | Typical Function |
|---|---|
| PLC CPU | Executes control logic |
| Power Supply | Provides system power |
| Main Backplane | Provides module interconnection |
| Extended Backplane | Provides additional module positions or system expansion |
| I/O Modules | Interface with field devices |
| Communication Modules | Connect PLC system to industrial networks |
| BMXXBC008K | Provides backplane extension connection |
| HMI | Operator monitoring and control |
| Engineering Software | Programming and system configuration |
The exact components and architecture depend on the Schneider Electric platform being used.
Engineering Best Practices
Several engineering practices can improve the reliability of an installation using the BMXXBC008K.
Plan the Cabinet Layout First
The 0.8-meter cable length should be considered during cabinet design rather than treated as an afterthought.
Minimize Mechanical Stress
Cable routing should provide enough flexibility without creating unnecessary slack that could interfere with cabinet equipment.
Maintain Connector Accessibility
Connectors should remain accessible for inspection and maintenance.
Separate Signal and Power Wiring
Where required by the system installation rules, keep the backplane extension cable away from high-power switching conductors and other potential sources of electrical interference.
Document Cable Connections
Maintenance drawings should identify the connected assemblies and cable path so that future technicians can verify the installation quickly.
Use Correct Replacement Parts
The full BMXXBC008K model should be recorded in spare-parts lists and maintenance documentation.
Physical and Logistics Information
The Schneider BMXXBC008K has a specified cable length of:
0.8 meters
The supplied logistics information gives a shipping weight of 3 kg.
The shipping weight should not be interpreted as the net physical weight of the cable. Shipping weight can include packaging and other logistics-related material.
For warehouse and procurement purposes, this distinction is important when calculating transportation requirements and inventory handling.
Key Advantages
0.8-Meter Extension Length
The BMXXBC008K provides 0.8 meters of cable length for compatible backplane extension applications.
Flexible PLC System Layout
An extension cable can allow compatible automation assemblies to be positioned with greater physical flexibility.
Supports Modular Automation Architecture
The cable can form part of a modular PLC system where backplane expansion or separation is required.
Simplified Cabinet Planning
A dedicated extension connection can help engineers organize automation equipment around the physical requirements of a control cabinet.
Maintenance-Friendly Architecture
Properly planned backplane extensions can provide greater flexibility when accessing or servicing individual system assemblies.
Technical FAQs
What is the Schneider BMXXBC008K?
The Schneider BMXXBC008K is a Backplane Extension Cable intended for compatible Schneider Electric Modicon industrial automation systems.
What is the cable length?
The specified cable length is 0.8 meters.
What is the shipping weight?
The supplied shipping weight is 3 kg. This is a logistics value and should not be interpreted as the actual net weight of the cable.
What is the purpose of a backplane extension cable?
A backplane extension cable provides the required connection between compatible automation system assemblies when they need to be physically separated or arranged in an extended configuration.
Is the BMXXBC008K a PLC module?
No. The BMXXBC008K is a cable assembly, not a CPU, I/O module, or communication processor.
Can any PLC cable replace the BMXXBC008K?
No. A replacement cable should be confirmed for compatibility with the specific Schneider Electric automation platform, backplane architecture, connector configuration, and system requirements.
What should be checked if extended modules are not recognized?
Check the cable part number, connector seating, backplane compatibility, controller diagnostics, power conditions, system configuration, and physical condition of the cable.
How should the cable be maintained?
Routine maintenance should focus on connector condition, cable routing, mechanical stress, insulation condition, and system diagnostics.
Conclusion
The Schneider BMXXBC008K Backplane Extension Cable is an industrial automation interconnection component designed to support compatible Modicon control-system architectures requiring backplane extension. By providing a specified 0.8-meter cable length, it can help engineers arrange compatible automation assemblies with greater physical flexibility while maintaining the required system interconnection.
The BMXXBC008K does not perform PLC processing or direct field I/O functions. Instead, it serves as part of the infrastructure connecting compatible control-system assemblies. Correct connector installation, appropriate cable routing, mechanical protection, and system compatibility are therefore essential for reliable operation.
For procurement, replacement, and maintenance, the complete BMXXBC008K model should be verified together with the target Schneider Electric automation platform and connected backplane equipment. The supplied 3 kg shipping weight should be treated as a logistics specification rather than the net weight of the cable.