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| Place of Origin: | Germany |
| Brand Name: | Siemens |
| Certification: | COC & COO |
| Model Number: | 6GK1503-2CB00 |
Siemens 6GK1503-2CB00 Profibus OLM/G11 V4.0 Optical Link Module With Test Port
The Siemens 6GK1503-2CB00 is a high-performance PROFIBUS Optical Link Module (OLM) from the SIMATIC NET industrial communication portfolio, designed to enable robust, long-distance, and electrically isolated PROFIBUS DP networks using fiber-optic cabling. Specifically part of the OLM/G12 series, this module supports multi-mode fiber with ST connectors and provides dual electrical PROFIBUS interfaces plus one optical interface, making it ideal for creating ring, line, or star topologies in demanding industrial environments.
Widely deployed in automotive plants, power stations, water/wastewater facilities, mining operations, and large-scale manufacturing systems, the 6GK1503-2CB00 eliminates ground loops, suppresses electromagnetic interference (EMI), and extends PROFIBUS segment distances up to 3,800 meters per fiber link—far beyond the limits of copper-based RS-485 cabling. Its rugged metal housing, wide temperature range, and DIN-rail mounting ensure reliable operation in harsh conditions where signal integrity and network uptime are critical.
Product Overview: Siemens 6GK1503-2CB00
| Manufacturer | Siemens |
| Part Number | 6GK1503-2CB00 |
| Function | PROFIBUS OLM/G12 – Optical-Electrical Converter |
| Electrical Ports | 2 × RS-485 (Sub-D 9-pin) |
| Optical Port | 1 × multi-mode ST |
| Fiber Core Size | 50/125 µm or 62.5/125 µm |
| Max Distance | 3,800 m (with 62.5/125 µm) |
| 6GK1503-2CA01 | 6GK1503-3CB00 |
| 6GK1503-3CD00 | 6GK1503-2CC00 |
| 6GK1503-3CC00 | 6GK1503-4CB00 |
| 6GK1502-2CB10 | 6GK1502-2CC10 |
| 6GK1502-3CB00 | 6GK1503-2CB01 |
| 6GK1503-2CE00 | 6GK1503-3CE00 |
| 6GK1503-2CB20 | 6GK1503-2CB30 |
| 6GK1503-3CB10 | 6GK1503-2CB50 |
| 6GK1503-3CB50 | 6GK1503-2DB00 |
| 6GK1503-3DB00 | 6GK5734-1FX00-0AA0 |
