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- Siemens
- 6AG1503-3CB00-2AA0
- Optical Link Module
- Germany
- 39.5 × 112 × 74.5 mm
- 0.424 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Siemens 6AG1503-3CB00-2AA0 SIPLUS NET OLM/G12 V4.0 Optical Link Module is an industrial optical communication module used to connect compatible PROFIBUS networks through fiber-optic transmission paths. It belongs to the SIPLUS NET OLM family and is suited to automation systems where communication equipment must operate in demanding industrial environments.
The module is typically installed between electrical PROFIBUS segments and optical communication links. This arrangement allows network sections located in different control cabinets, production areas, or electrically noisy environments to communicate through fiber while maintaining the required network topology.
In a plant network, the OLM/G12 can be used as part of a distributed communication infrastructure rather than as a controller or I/O device. Its role is to handle the physical communication conversion between compatible electrical and optical network segments, allowing higher-level automation controllers and field devices to exchange data across the connected network.
The SIPLUS version is appropriate for installations where the communication infrastructure is exposed to environmental conditions beyond those normally associated with standard automation cabinets, subject to the applicable product specifications and installation requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6AG1503-3CB00-2AA0 |
| Product Family | SIPLUS NET OLM |
| Product Series | OLM/G12 V4.0 |
| Product Type | Optical Link Module |
| Primary Function | PROFIBUS optical communication interface |
| System Role | Industrial network communication module |
| Typical Application | PROFIBUS network and fiber-optic communication |
| Dimensions | 39.5 × 112 × 74.5 mm |
| Weight | 0.424 kg |
Product Features
- SIPLUS NET OLM/G12 V4.0 Optical Link Module
- Provides an interface between compatible electrical and optical PROFIBUS network segments
- Supports fiber-optic communication within distributed automation architectures
- Suitable for communication routes exposed to electrical interference
- Useful for extending or segmenting compatible industrial communication networks
- Supports cabinet-to-cabinet and area-to-area communication arrangements
- Suitable for Siemens automation systems using compatible PROFIBUS infrastructure
- SIPLUS construction for applicable demanding industrial installation conditions
Working Principle
The 6AG1503-3CB00-2AA0 receives PROFIBUS communication from a connected network segment and transfers the data through the appropriate optical communication path. At the opposite side of the link, the optical signal is converted back into the corresponding electrical communication interface for the connected PROFIBUS segment.
PROFIBUS Electrical Segment → OLM/G12 → Fiber-Optic Link → OLM / Compatible Network Segment → PROFIBUS Devices
The optical link separates the communication path from many of the electrical limitations associated with long copper connections. Fiber can also help reduce the effects of electromagnetic interference when communication routes pass through electrically noisy production areas.
The module itself does not execute PLC control logic or process field signals. It operates at the communication layer, maintaining the network connection between compatible PROFIBUS segments so that controllers, remote I/O stations, drives, and other network devices can exchange data.
Role in a PROFIBUS Fiber-Optic Communication Architecture
The OLM/G12 occupies the physical network infrastructure layer between electrical PROFIBUS equipment and fiber-optic communication routes.
PLC / PROFIBUS Master → Electrical PROFIBUS Segment → OLM/G12 → Fiber-Optic Network → OLM / Network Segment → Remote PROFIBUS Devices
| System Element | Function |
|---|---|
| PROFIBUS Master / Controller | Executes automation and process-control logic |
| Electrical PROFIBUS Segment | Carries network communication between local devices |
| 6AG1503-3CB00-2AA0 | Interfaces the PROFIBUS network with the optical link |
| Fiber-Optic Network | Transfers communication between separated locations |
| Remote OLM / Network Device | Provides the corresponding network-side interface |
| Remote I/O / Field Devices | Exchanges process data with the controller |
| Engineering Station | Supports configuration, commissioning, and diagnostics |
The optical communication layer can be particularly useful when PROFIBUS devices are distributed across different cabinets or plant areas and the communication route requires a fiber-based connection.
Industrial Applications
| Application | Typical Use |
|---|---|
| Process Automation | Fiber-based PROFIBUS communication between control areas |
| Manufacturing Lines | Communication between separated automation cabinets |
| Power and Utility Systems | Network links across electrically demanding plant areas |
| Machine Automation | Connecting remote PROFIBUS equipment through optical links |
| Distributed I/O Systems | Communication between controller and remote I/O infrastructure |
| Industrial Plants | Fiber communication across separated equipment locations |
| Electrically Noisy Areas | PROFIBUS communication where fiber helps reduce EMI exposure |
Installation and Maintenance
- Verify that the 6AG1503-3CB00-2AA0 is suitable for the intended PROFIBUS and fiber-optic network architecture.
- Confirm the network topology and identify each connected electrical and optical segment before installation.
- Install the OLM in the approved control-panel or communication-equipment location.
- Verify the PROFIBUS cable connections and connector assignments before energizing the module.
- Confirm that the optical interfaces are connected to the correct fiber paths.
- Keep fiber connectors protected from dust and contamination during installation and maintenance.
- Avoid excessive bending, pulling, or mechanical stress on the fiber-optic cables.
- Check the communication wiring and fiber routing for possible mechanical damage or interference sources.
- Apply power and verify the module’s communication and diagnostic indications.
- Check communication between the connected PROFIBUS devices after commissioning.
- If communication becomes intermittent, inspect the electrical segment, optical path, connectors, and corresponding network equipment separately.
- After replacement, verify the complete PROFIBUS communication path and confirm that the affected controllers, remote I/O stations, and field devices exchange data normally.
Compatible System Components
| Component | Function |
|---|---|
| Siemens SIMATIC S7 Controller | Provides PROFIBUS master or control functions |
| PROFIBUS Network Components | Provides the electrical fieldbus communication path |
| Fiber-Optic Cable | Transfers communication between optical link modules |
| PROFIBUS Connectors | Provides electrical network connections |
| Remote I/O Stations | Exchanges process signals with the automation controller |
| PROFIBUS Drives | Receives control commands and returns drive information |
| Additional OLM Units | Establishes corresponding optical network interfaces |
| Engineering Station | Supports network configuration and diagnostics |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Siemens 6AG1503-2CA01-2AA0 | SIPLUS NET OLM/P11 V4.1 Optical Link Module | PROFIBUS optical communication |
| Siemens 6AG1503-2CB00-2AA0 | SIPLUS NET OLM/G11 V4.0 Optical Link Module | PROFIBUS fiber-optic network connection |
| Siemens 6AG1503-2CC00-2AA0 | SIPLUS NET OLM/G11-1300 V4.0 Optical Link Module | PROFIBUS optical communication |
| Siemens 6AG1503-3CA01-2AA0 | SIPLUS NET OLM/P12 V4.1 Optical Link Module | PROFIBUS optical communication |
| Siemens SIPLUS NET OLM Series | Optical Link Module Family | Industrial PROFIBUS network infrastructure |
| Siemens PROFIBUS Network Components | Fieldbus Communication Components | PROFIBUS network construction |
| Siemens SIPLUS PROFIBUS Components | Ruggedized Network Components | Demanding industrial communication systems |
Key Advantages
- Provides optical communication interfacing for compatible PROFIBUS networks.
- Supports fiber-based communication between separated automation areas.
- Useful where electrical interference makes long copper communication routes less desirable.
- Helps connect distributed PROFIBUS segments within a larger automation architecture.
- Suitable for cabinet-to-cabinet and plant-area communication links.
- Fits into Siemens SIPLUS-based industrial communication infrastructure.
Technical FAQs
When is an OLM/G12 optical link preferable to a conventional copper PROFIBUS connection?
An optical link can be useful when PROFIBUS network sections are separated by long routes, different equipment areas, or electrically noisy environments. The complete network topology and the compatible optical interface should be checked before selecting the module.
What should be checked if PROFIBUS communication is lost after connecting the OLM/G12?
Check the electrical PROFIBUS connections first, followed by the optical interfaces and fiber path. The diagnostic indications on the communication modules can then be compared with the network status to determine whether the fault is local to the electrical segment, optical link, or remote network section.
Can the 6AG1503-3CB00-2AA0 be used as a standalone PROFIBUS controller?
No. The OLM/G12 functions as a communication interface within the PROFIBUS network. Control logic remains with the connected PLC, controller, or other PROFIBUS master device.
What is important when replacing an existing OLM/G12 module?
The replacement should match the existing network architecture and optical connection arrangement. Fiber paths, PROFIBUS connections, topology, and communication status should all be verified after installation before the network is returned to normal service.