Description
The REXROTH BOSCH DBS03.1-FW is an INTERBUS-S slave interface plug-in module designed for Bosch Rexroth DIAX/CLC-D motion-control systems. The associated full type code is FWC-DBS3.1-CI1-02VRS-NN.
The DBS03.1-FW is installed directly into a compatible control module and provides the interface required to integrate the CLC-D control system into an INTERBUS-S network. Bosch Rexroth documentation identifies the DBS03.1-FW specifically as an INTERBUS-S slave module for CLC-D control modules.
⚙️ Key Features
- Bosch Rexroth / INDRAMAT DBS03.1-FW module
- Full configuration: FWC-DBS3.1-CI1-02VRS-NN
- INTERBUS-S slave interface
- Plug-in module for compatible CLC-D control systems
- Designed for DIAX motion-control architectures
- Incoming and outgoing INTERBUS-S interfaces
- Galvanically isolated bus interfaces
- Suitable for legacy machine and drive-system maintenance
- Useful as a replacement spare for discontinued motion-control equipment
📋 Technical Datasheet
| Parameter | Specification |
|---|---|
| Brand | REXROTH BOSCH / INDRAMAT |
| Model | DBS03.1-FW |
| Full Type Code | FWC-DBS3.1-CI1-02VRS-NN |
| Product Series | DIAX / CLC-D Motion Control System |
| Product Name | INTERBUS-S Slave Interface Module |
| Product Type | Plug-In Fieldbus Interface Board |
| Fieldbus | INTERBUS-S |
| Interface | Incoming / Outgoing INTERBUS-S, RS-485 based |
| Connector | 9-Pin D-Sub Interface |
| Product Status | Legacy Industrial Automation Spare |
🔌 INTERBUS-S Communication Function
The primary purpose of the DBS03.1-FW is to connect a compatible CLC-D control module to an INTERBUS-S network.
The module provides both incoming and outgoing bus connections, allowing the drive-control system to participate in the INTERBUS-S ring. The documented interface uses a galvanically isolated RS-485-based connection with 9-pin D-sub connectors.
This makes the board particularly relevant when maintaining older Bosch Rexroth motion-control installations where the original fieldbus architecture must remain operational.
🧩 CLC-D System Integration
The DBS03.1-FW is designed as a plug-in module and is mechanically combined with the CLC-D control module. Bosch Rexroth documentation notes that additional modules can also be installed with the DBS03.1-FW, so the complete slot configuration should be recorded before disassembly.
A typical communication path can be represented as:
PLC / INTERBUS-S Master → INTERBUS-S Network → DBS03.1-FW → CLC-D Control Module → Drive / Motion-Control System
Correct hardware and firmware configuration should be verified before commissioning.
🏭 Typical Applications
The module is suitable for legacy applications including:
- Bosch Rexroth DIAX motion-control systems
- CLC-D control modules
- INTERBUS-S machine networks
- Servo-drive systems
- CNC and machine-tool equipment
- Automated production machinery
- Packaging and material-handling systems
- Industrial motion-control cabinets
- Legacy machine refurbishment
- Drive-system spare-parts replacement
🛠️ Installation & Commissioning
Before replacement, disconnect the control cabinet from its electrical supply and follow the applicable machine safety procedure.
Record the original module position and all bus connections. Check the identification label to confirm DBS03.1-FW and the complete configuration code FWC-DBS3.1-CI1-02VRS-NN.
After installation:
- Verify the module is correctly seated.
- Check the incoming and outgoing INTERBUS-S connections.
- Inspect the D-sub connectors and cable shielding.
- Confirm the network topology and termination arrangement.
- Power the control system according to the machine procedure.
- Check bus diagnostics and controller status.
- Perform a controlled motion test before returning the machine to production.
🔍 Troubleshooting
INTERBUS-S communication failure:
Check both incoming and outgoing bus connections, connector condition, cable continuity, and network topology.
Slave not detected:
Verify that the DBS03.1-FW is correctly installed in the compatible CLC-D control module and that the configured hardware matches the machine application.
Intermittent bus faults:
Inspect D-sub connectors, shielding, grounding, cable routing, and mechanical seating of the module.
Controller diagnostic alarm:
Check the CLC-D diagnostic information and compare the installed module configuration with the original system documentation.
No communication after replacement:
Confirm the complete type code and revision before investigating the wider INTERBUS-S network.
🧰 Maintenance
For spare-parts storage, keep the PCB in an antistatic protective package and avoid exposure to moisture, dust, and excessive temperature.
Recommended maintenance includes:
- Inspect D-sub connectors for oxidation or mechanical damage.
- Check the PCB for visible component damage.
- Inspect INTERBUS-S cables and shielding.
- Record the module type code and revision.
- Keep the original bus configuration documentation.
- Maintain a tested spare for production-critical legacy machinery.
🔄 Replacement Considerations
The DBS03.1-FW should be matched using the complete identification rather than the basic model number alone.
Before ordering or installing a replacement, compare:
- DBS03.1-FW identification
- FWC-DBS3.1-CI1-02VRS-NN configuration
- Hardware revision
- CLC-D controller type
- Connector arrangement
- Existing INTERBUS-S network configuration
The part number R911269069 is also associated with DBS03.1-FW in Bosch Rexroth/Indramat spare-part records.
❓ FAQ
What is the DBS03.1-FW used for?
It is an INTERBUS-S slave interface module for compatible Bosch Rexroth CLC-D motion-control systems.
What is the full configuration code?
The supplied configuration is FWC-DBS3.1-CI1-02VRS-NN.
What fieldbus does it support?
The DBS03.1-FW is designed for INTERBUS-S communication.
Is it a complete drive controller?
No. It is a plug-in interface module used with a compatible control system.
What is the associated part number?
DBS03.1-FW is associated with Bosch Rexroth part number R911269069.
Does it use a D-sub connector?
Yes. The documented INTERBUS-S interfaces use 9-pin D-sub connectors.
Can it be used as a general PLC communication card?
It is a dedicated interface for the applicable Bosch Rexroth motion-control architecture and should not be treated as a universal fieldbus card.
What should be checked before replacement?
Verify the DBS03.1-FW type, full configuration code, controller type, hardware revision, connector arrangement, and existing INTERBUS-S configuration.
📦 Related REXROTH BOSCH Models & Components
- REXROTH DBS03.1-FW INTERBUS-S Slave Module
- REXROTH DBS02.1-FW Interface Module
- REXROTH DBS04.1-FW INTERBUS-S Module
- REXROTH CLC-D02.1M-FW Control Module
- REXROTH CLC-D02.2M-FW Control Module
- REXROTH DEA04.2 Plug-In Module
- REXROTH DEF01.1 Plug-In Module
- REXROTH DPF02.1 Interface Module
- REXROTH DLF01.1 Module
- REXROTH DIAX02 Motion-Control System
✅ Product Summary
The REXROTH BOSCH DBS03.1-FW FWC-DBS3.1-CI1-02VRS-NN is a specialized INTERBUS-S slave interface board for Bosch Rexroth CLC-D/DIAX motion-control systems. Its incoming and outgoing fieldbus interfaces make it an important replacement component for maintaining legacy servo and machine-control installations.
For replacement work, verify the DBS03.1-FW model, complete FWC configuration, hardware revision, CLC-D controller, and INTERBUS-S wiring before installation.
