Siemens 6GK1503-2CB00 Profibus Optical Link Module

Siemens 6GK1503-2CB00 PROFIBUS optical link module enables reliable, long-distance PROFIBUS communication by converting electrical PROFIBUS DP signals to fiber-optic transmission. Widely used in industrial automation, it supports integration of fiber optic links in PROFIBUS networks, assisting replacement, retrofit, and network upgrades by maintenance teams, OEMs, and system integrators. The device features a RS-485 (electrical) to fiber optic interface, uses multimode fiber, and supports transmission distances up to 3 km depending on fiber type, with data rates up to 12 Mbps. It offers 1 electrical (SUB-D) port and 2 optical ports and supports line, ring, and star network topologies. Diagnostics are provided by LED indicators for status and fault detection. The module is powered by 24 V DC, mounts on DIN rails, and has an IP20 protection rating. It is designed for use with SIMATIC S7 and PROFIBUS networks, ensuring compatibility within standard industrial automation environments. Widely deployed in manufacturing plants, process industries, and large-scale automation networks where reliable data transmission over fiber optic cables is required.