Siemens SIMATIC NET PROFIBUS manual Optical Link Module OLM

Active Components for Optical Networks

8.2Optical Link Module OLM

Figure 8-2 Optical Link Module (OLM)

Uses

With the PROFIBUS OLM (Optical Link Module), Version 3, PROFIBUS networks can be implemented as bus, star and redundant ring structures.

The transmission rate of a fiber-optic path is not dependent on the distance and can range from 9.6 Kbps to 12 Mbps.

OLMs can be used in system buses based on PROFIBUS, inter-building networks with glass fiber-optic cables, mixed networks with electrical and optical segments, large-span networks (road tunnel, traffic control systems), networks in which high availability is required (redundant ring networks) etc.

8-4	PROFIBUS Networks SIMATIC NET
	6GK1970-5CA20-0AA1 Release 2 05/2000