Siemens 6GK1503-3CA01 PROFIBUS OLM/P12 V4.1 optical link module

Siemens identifies 6GK1503-3CA01 as a PROFIBUS OLM/P12 V4.1 optical link module. The Siemens data sheet specifies one RS-485 interface, two plastic FOC interfaces, 9.6 kbit/s to 12 Mbit/s PROFIBUS transfer rates, and 24 V DC supply.

System function and position

Rebuilt from individual evidence

Siemens identifies 6GK1503-3CA01 as a PROFIBUS OLM/P12 V4.1 optical link module.

The Siemens data sheet specifies one RS-485 interface, two plastic FOC interfaces, 9.6 kbit/s to 12 Mbit/s PROFIBUS transfer rates, and 24 V DC supply.

Unknown: fiber installation loss, topology limits, installed configuration, and current commercial availability require separate evidence.

The module bridges an electrical PROFIBUS segment and plastic-fiber optical links in an industrial communication network.

Exact reference: 6GK1503-3CA01
Category: PLC / CPU
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Converts PROFIBUS traffic between the RS-485 interface and plastic-fiber optical links.
System position: Sits between an electrical PROFIBUS segment and the optical network path in the automation system.
Upstream / inputs: Receives PROFIBUS traffic through the RS-485 interface and operating power through the 24 V DC supply.
Downstream / outputs: Transmits converted PROFIBUS traffic through the two plastic FOC interfaces.
Limitations: Unknown: fiber installation loss, topology limits, installed configuration, and current commercial availability require separate evidence.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens identifies 6GK1503-3CA01 as a PROFIBUS OLM/P12 V4.1 optical link module.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
The Siemens data sheet specifies one RS-485 interface, two plastic FOC interfaces, 9.6 kbit/s to 12 Mbit/s PROFIBUS transfer rates, and 24 V DC supply.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

The module bridges an electrical PROFIBUS segment and plastic-fiber optical links in an industrial communication network.
Confidence: medium
Rationale: The system position follows from the documented product function and the named upstream or downstream interface.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: fiber installation loss, topology limits, installed configuration, and current commercial availability require separate evidence.
Confidence: low
Missing evidence: The captured sources do not establish installation-specific compatibility or current commercial conditions.

System position diagram

A flow from the upstream system interface through 6GK1503-3CA01 to the downstream control system. — The diagram shows the documented position of the exact reference in an industrial control path.

View Mermaid source

flowchart LR
  U["Upstream system interface"] -->|"documented input"| P["6GK1503-3CA01"]
  P -->|"documented output"| D["Downstream control system"]

View diagram labels

Nodes: Siemens 6GK1503-3CA01 PROFIBUS OLM/P12 V4.1 optical link module
Edges: Documented system data path

Next action

Siemens identifies 6GK1503-3CA01 as a PROFIBUS OLM/P12 V4.1 optical link module.

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