This allows the integration of two separate Profibus electrical segments into an optical network, e.g., a redundant ring. The OLM P22 variant is suitable for plastic fiber optic cable, while the OLM G22 is designed for glass fiber optic cable. Both feature a signaling contact and measurement terminals for monitoring optical signal quality. Siemens Profibus OLMs enable the construction of Profibus optical networks with various topologies: linear, star, and redundant ring. The transfer rate over a three-kilometer optical segment is 12 Mbps and is independent of the distance covered.
Siemens offers a wide range of Profibus components for electrical and optical networks. OLM components act as the gateway between these two types of networks, enabling hybrid topologies.

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