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- Schneider
- STBXBE1300
- BOS Internal Bus Extension Module
- France
- 25 × 80 × 130 mm
- 0.125 kg
- Xiamen, China
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Product Overview
The Schneider STBXBE1300 Modicon STB BOS Internal Bus Extension Module is used on the beginning side of an extended Modicon STB island segment. It provides the BOS (Beginning Of Segment) interface for continuing the STB internal bus to an additional group of I/O modules.
This arrangement is useful when an STB installation needs to distribute modules into separate physical groups rather than placing every module in one continuous assembly. A second I/O group can be positioned closer to the relevant machine section or field devices while remaining part of the same overall STB architecture.
The STBXBE1300 is an interconnection component rather than an I/O processing module. In practical commissioning, its operation depends on the corresponding EOS-side module, extension connection, downstream STB modules, and the overall island configuration. If an extended segment is unavailable, these elements should be checked together.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | Schneider STBXBE1300 |
| Product Type | BOS Internal Bus Extension Module |
| Series | Modicon STB |
| Function | Internal Bus Extension |
| Application | Modicon STB Distributed I/O Island |
| System Role | BOS-Side Internal Bus Extension |
| Installation | Modicon STB Island |
| Dimensions | 25 × 80 × 130 mm |
| Weight | 0.125 kg |
Product Features
- BOS internal bus extension for Modicon STB architectures.
- Provides the beginning-side interface for an extended STB segment.
- Supports physically separated groups of STB I/O modules.
- Maintains the internal bus connection between separate module groups.
- Suitable for larger or distributed STB island configurations.
- Works as part of an EOS-to-BOS internal bus extension arrangement.
Working Principle
The STBXBE1300 is installed at the BOS (Beginning Of Segment) side of the extended STB module group. It receives the internal bus connection from the preceding STB segment through the appropriate extension arrangement.
Once the extension is correctly connected, the downstream STB modules can remain part of the same island architecture. The module itself does not execute control logic or process field signals; its purpose is to maintain the internal bus connection into the additional segment.
When a downstream segment cannot communicate with the controller, the STBXBE1300 should be checked together with the extension connection, upstream EOS interface, downstream STB modules, and segment power. This approach helps distinguish an internal-bus problem from an individual I/O module fault.
Role in a Modicon STB Distributed I/O Control Architecture
| System Element | Function |
|---|---|
| STBXBE1300 BOS Module | Provides the BOS-side interface for the extended STB internal bus |
| STB EOS Extension Module | Provides the corresponding end-of-segment interface |
| STB Extension Cable | Connects the separate STB module groups |
| STB I/O Modules | Process digital and analog field signals |
| STB Network Interface Module | Connects the island to the upstream controller or network |
| STB Terminal Bases | Provide mechanical mounting and electrical interconnection |
| PLC / Controller | Executes the machine or process control program |
| Field Sensors and Actuators | Interface the distributed I/O with the physical process |
Industrial Applications
| Application | Typical Use |
|---|---|
| Distributed Machine I/O | Connecting an additional STB I/O group to a remote machine section |
| Packaging Machinery | Placing I/O modules closer to sensors and actuators |
| Material Handling | Extending I/O architecture along conveyors and handling equipment |
| Process Skids | Connecting physically separated groups of local I/O |
| Large Machine Systems | Dividing a large I/O installation into practical module groups |
| Remote I/O Sections | Extending the STB internal bus to another equipment zone |
| Factory Automation | Supporting larger modular STB island arrangements |
| Modular Control Cabinets | Connecting separate STB module sections within a distributed architecture |
Installation and Maintenance
- Confirm the BOS application: Verify that the STBXBE1300 is intended to serve as the beginning-side interface of the planned STB extended segment.
- Check the module position: Install the module at the correct beginning of the downstream STB segment.
- Verify the upstream EOS component: Confirm that the preceding STB segment contains the appropriate EOS-side extension arrangement.
- Inspect the extension connection: Check the cable or interconnection between the upstream and downstream segments for secure installation and physical damage.
- Check terminal-base seating: Make sure the STBXBE1300 is properly seated in its STB terminal base.
- Verify mechanical alignment: Ensure that the downstream module group is correctly assembled and securely mounted.
- Check segment power: Confirm that the extended STB section receives the required power before diagnosing an internal bus problem.
- Verify controller communication: After startup, confirm that the downstream I/O modules are recognized and exchange the expected data.
- Check the complete bus path: If the entire downstream segment is unavailable, inspect the EOS interface, extension connection, STBXBE1300, and downstream architecture.
- Inspect adjacent components: Check terminal bases, connectors, and neighboring modules for looseness or installation problems.
- Review system configuration: Make sure the physical extended-segment arrangement corresponds to the configured STB island architecture.
- Use the correct replacement: Verify the complete STBXBE1300 model and the associated extension components before replacing the module.
Compatible System Components
| Component | Function |
|---|---|
| Modicon STB EOS Extension Modules | Provide the upstream end-of-segment interface |
| Modicon STB Internal Bus Extension Cables | Connect separate STB module groups |
| Modicon STB I/O Modules | Process field input and output signals |
| Modicon STB Network Interface Modules | Connect the island to the control network |
| Modicon STB Terminal Bases | Provide module mounting and electrical interconnection |
| Modicon STB Power Distribution Components | Manage field power within the island |
| PLC / Controller | Controls the overall automation application |
| Field Sensors and Actuators | Interface the I/O system with the machine or process |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Schneider STBXBE1300 | Modicon STB BOS Internal Bus Extension Module | BOS-side internal bus extension |
| Schneider STBXBE1100 | Modicon STB EOS Internal Bus Extension Module | EOS-side internal bus extension |
| Schneider STB Internal Bus Extension Components | Modicon STB Extension Products | Connecting separate STB module groups |
| Schneider STB Extension Cable Series | Modicon STB Internal Bus Extension Cables | Linking extended STB segments |
| Schneider STB I/O Modules | Modicon STB Digital and Analog I/O Modules | Processing signals in the extended segment |
| Schneider STBNI Series | Modicon STB Network Interface Modules | Connecting STB islands to industrial networks |
Key Advantages
- BOS-side internal bus extension
- Supports separated STB module groups
- Maintains the STB internal bus architecture
- Suitable for distributed machine I/O
- Simplifies expansion of larger STB islands
- Clear architecture for extended I/O segments
Technical FAQs
What does BOS mean on the STBXBE1300?
BOS means Beginning Of Segment. The STBXBE1300 is used at the beginning of an extended STB module segment as part of the internal bus extension architecture.
What is the relationship between STBXBE1300 and STBXBE1100?
The two modules serve different positions in the extension arrangement. STBXBE1300 provides the BOS-side interface, while STBXBE1100 is used for the EOS-side interface.
What should be checked if the downstream STB modules are not recognized?
Check the upstream EOS interface, extension connection, STBXBE1300 seating, power to the downstream segment, and the physical and configured STB architecture. If the entire segment is affected, inspect the common internal bus path before replacing individual I/O modules.
Does the STBXBE1300 process digital or analog signals?
No. The STBXBE1300 is an internal bus extension module. Digital and analog signal processing is performed by the corresponding STB I/O modules installed in the extended segment.