Product Overview

The Siemens 6AG1503-3CC00-4AA0 SIPLUS NET OLM/G12-1300 V4.0 Optical Link Module is an industrial optical communication module used to extend and interconnect compatible PROFIBUS network sections through fiber-optic communication. It belongs to the SIPLUS NET OLM family and serves as part of the communication infrastructure in distributed automation systems.

In a typical installation, the module is positioned between an electrical PROFIBUS segment and an optical network path. This arrangement is useful when automation equipment is distributed across different control cabinets, machine areas, or plant sections and a fiber-optic connection is preferred for the interconnecting route.

The OLM/G12-1300 handles communication at the network-interface level rather than performing application control. PLCs, PROFIBUS masters, remote I/O stations, drives, and other field devices continue to perform their respective control and process functions while the optical link module transfers network communication between compatible segments.

The SIPLUS configuration is intended for applicable industrial environments where communication infrastructure may require a more demanding environmental specification than standard automation hardware. Correct network topology, fiber connections, and compatible communication equipment remain essential for commissioning and maintenance.

Technical Specifications

Product Features

• SIPLUS NET OLM/G12-1300 V4.0 Optical Link Module
• Supports optical communication within compatible PROFIBUS architectures
• Provides an interface between electrical PROFIBUS segments and fiber-optic links
• Suitable for distributed automation systems with separated network sections
• Useful for communication routes where electromagnetic interference is a concern
• Supports network connections between remote control cabinets and field areas
• Suitable for Siemens PROFIBUS communication infrastructure
• SIPLUS configuration for applicable demanding industrial environments

Working Principle

The 6AG1503-3CC00-4AA0 receives PROFIBUS communication from the connected electrical network and transfers the communication through the optical link. At the corresponding remote interface, the optical transmission is converted back into the appropriate network connection for the receiving PROFIBUS segment.

PROFIBUS Segment → OLM/G12-1300 → Fiber-Optic Link → Remote Optical Interface → PROFIBUS Segment

The fiber path allows communication to pass between separated equipment locations without requiring a continuous copper connection across the entire route. This can be particularly useful where network cables pass between control areas or through electrically noisy industrial environments.

The module does not execute PLC programs or directly control field equipment. Its function is concentrated at the communication layer, maintaining data exchange between compatible PROFIBUS network sections and the devices connected to them.

Role in a PROFIBUS Optical Communication Architecture

The OLM/G12-1300 forms the communication bridge between the electrical PROFIBUS infrastructure and the fiber-optic network section.

PROFIBUS Master / PLC → Electrical PROFIBUS Segment → OLM/G12-1300 → Fiber-Optic Network → Remote OLM / Interface → PROFIBUS Devices

The communication architecture can be arranged around the physical layout of the plant, allowing optical links to connect equipment areas that are separated by distance or environmental conditions.

Industrial Applications

Installation and Maintenance

1. Verify that the 6AG1503-3CC00-4AA0 matches the intended PROFIBUS and optical communication architecture.
2. Confirm the existing network topology and identify the electrical and optical segments before installation.
3. Install the OLM/G12-1300 in the approved control-panel or communication-equipment location.
4. Check the PROFIBUS cable connections and connector assignments before applying power.
5. Confirm that each fiber-optic connection is routed to the intended remote optical interface.
6. Protect fiber connectors from dust, moisture, and contamination during installation.
7. Avoid excessive bending, pulling, twisting, or mechanical stress on the fiber-optic cable.
8. Inspect electrical connectors and optical interfaces for damage or poor seating.
9. Apply power and check the module’s diagnostic and communication indications.
10. Verify communication between local PROFIBUS devices and the remote network section.
11. If communication becomes intermittent, inspect the PROFIBUS segment, optical path, connectors, and remote interface separately.
12. After replacement, perform a complete communication test across the affected PROFIBUS network before returning the automation system to normal operation.

Compatible System Components

Recommended Related Models

Key Advantages

• Provides optical communication interfacing for compatible PROFIBUS networks.
• Supports fiber-based communication between separated automation areas.
• Useful for network routes where electromagnetic interference is a concern.
• Helps connect distributed PROFIBUS equipment through an optical infrastructure.
• Suitable for cabinet-to-cabinet and remote-area communication arrangements.
• Integrates into Siemens SIPLUS industrial communication architectures.

Technical FAQs

What is the role of the OLM/G12-1300 V4.0 in a PROFIBUS network?

It functions as an optical communication interface within a compatible PROFIBUS architecture, linking electrical network sections with an optical transmission path. The PLC or PROFIBUS master remains responsible for automation control.

How should the optical path be checked during a network fault?

The local PROFIBUS connections should be checked first, followed by the optical connectors, fiber route, and corresponding remote optical interface. Diagnostic indications can help determine which section of the communication path requires further investigation.

Can the 6AG1503-3CC00-4AA0 be selected solely because another OLM/G12-1300 is installed?

No. The exact order number, network topology, optical interface arrangement, and connected communication equipment should all be considered when selecting a replacement or additional module.

What can cause intermittent communication through an OLM/G12-1300 link?

Possible causes include poor electrical connections, contaminated optical connectors, damaged fiber, excessive cable bending, or a problem at the remote optical interface. The complete communication path should be inspected rather than assuming the OLM itself is defective.