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SKU: 6GK1503-2CB00

Siemens PROFIBUS OLM/G11 6GK1503-2CB00 Optical Link Module

The Siemens 6GK1503-2CB00 OLM/G11 V4.0 converts PROFIBUS RS485 signals to glass fiber optics. Features 12 Mbit/s speed support, BFOC sockets, and a 24V DC input for reliable industrial networking.

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Product Overview

The Siemens 6GK1503-2CB00 (OLM/G11 V4.0) serves as a high-performance bridge between electrical and optical PROFIBUS networks. This Optical Link Module (OLM) converts electrical RS485 signals into optical signals, allowing data to travel over glass fiber optic cables. By utilizing this module, system designers eliminate electromagnetic interference (EMI) issues and extend communication distances far beyond the capabilities of standard copper wiring.

Versatile Interface Capabilities

This module features a hybrid connection architecture that optimizes network flexibility. It provides one RS485 electrical port via a 9-pin Sub-D socket and one optical port equipped with two BFOC (ST) sockets. This configuration supports various PROFIBUS protocols and speeds, including:

  • Standard PROFIBUS: Supports data rates from 9.6 kbit/s up to 12 Mbit/s.
  • PROFIBUS PA: Supports the specific 45.45 kbit/s rate required for process automation.
  • Long-Distance Transmission: Enables reliable communication over glass fiber optic cables (up to 3000 meters depending on fiber type).

Robust Power and Safety Features

The 6GK1503-2CB00 thrives in unstable industrial power environments. It operates on a nominal 24V DC supply but maintains full functionality across a wide voltage swing from 18.8V to 28.8V DC. To ensure continuous uptime, Siemens engineers included:

  • Integrated Input Fuse: Protects the internal circuitry from external electrical faults.
  • Signaling Contact: Provides an automated alert system for monitoring the status of the optical link and power supply.
  • Diagnostic Test Port: Allows technicians to measure the quality of the optical signal without interrupting network traffic.

Professional Network Integration

Because the module weighs only 0.34 kg and utilizes a compact housing, it integrates perfectly into dense control cabinets. It primarily serves as a cornerstone for building linear, star, or redundant ring topologies in modern automation facilities. Whether you are connecting remote I/O stations or linking separate production buildings, the 6GK1503-2CB00 guarantees high data integrity and lightning protection by isolating different parts of the network through fiber optics.

Technical Specifications

  • Manufacturer: Siemens
  • Order Number: 6GK1503-2CB00
  • Version: OLM/G11 V4.0
  • Electrical Port: 1 x RS485 (9-pin Sub-D)
  • Optical Port: 1 x Glass Fiber Optic (2 x BFOC/ST sockets)
  • Supply Voltage: 24V DC (Range: 18.8V – 28.8V)
  • Current Consumption: Max 200 mA
  • Transmission Rate: 9.6 kbit/s to 12 Mbit/s
  • Operating Temperature: 0°C to +60°C
  • Dimensions: 39.5 mm x 112 mm x 74.5 mm
  • Weight: 0.34 kg
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