Siemens SIMATIC NET User Manual

Planning/configuring
7.1 Network topologies
Optical link module
Operating Instructions, 01/2020, C79000-G8976-C270-06
61
NOTICE
Functional disruption due to incorrect transmission medium
No
plastic fiber-optic cable may be connected to an OLM that uses glass fiber-optic cable
and vice versa.
7.1.5.2 Redundant optical ring with two OLMs
Setting up a redundant optical ring with two PROFIBUS OLMs can be seen as special case
of the redundant optical ring and can be implemented with the following two configurations.
Figure 7-4 Configuration 1
Figure 7-5 Configuration 2

Siemens SIMATIC NET Specifications

General

Category	Industrial Communication Software
Manufacturer	Siemens
Operating Systems	Windows, Linux
Protocols Supported	PROFIBUS, PROFINET, OPC UA
Compatibility	Siemens PLCs, Third-party devices with supported protocols