Installation - Siemens SIMATIC NET OLM12M Description And Operating Manual

6ZB5530–3AB00–0BA0/01
6.7

Installation

Connecting the Optical LAN cables
Figure 18: View from Below the Modules with Optical Channels 2 and 3
1 = CH3, optical transmitter
2 = CH3, optical receiver
3 = CH2, optical transmitter
4 = CH2, optical receiver
Connect the optical link modules together using a duplex FO cable with duplex connectors or
pairs of connectors.
For a single-fiber ring topology, use an FO cable with connectors.
Make sure that in each case an optical input is connected to an optical output (crossover
connection).
Make sure that the strain relief for the FO cable is adequate and do not exceed the minimum
bending radii of the FO cable.
Close unused fiber-optic sockets with the supplied dust caps. Extraneous light, particularly in
brightly lit areas can cause disturbances on the network.
Set all unused optical channels to the 'Inactive' mode.
Make sure that the length of the FO cable is within the limits set by the minimum and
maximum lengths and that you use only the fiber types specified in Table 1 and in the technical
data.
Make sure that no dust can infiltrate optical components. Dust in optical components can make
them unusable.
Copyright Siemens AG 1997
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SIMATIC NET OLM12M