Siemens ESM - Manual (Page 15)

Introduction
Industrial Ethernet OSM/ESM
C79000-Z8976-C068-10
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1.1.3 OSM ITP53
Possible Attachments
The OSM ITP53 allows attachment of up to five DTEs or network segments using
the ITP connector. By coupling an OSM via ports 7 and 8 it is possible to create
optical bus and ring structures. The OSM TP53 can be coupled with other OSM
TP53, OSM TP62, OSM ITP22, OSM ITP62, and OSM BC08 modules via the
optical ports.
The additional FO port of the OSM ITP53 (port 1) also allows redundant coupling of
rings via fiber-optic cable (see Section 3.3).
The OSM ITP53 also has eight digital inputs. The states of the inputs are available
in a management information base (MIB) and can be read using an SNMP get
request. Depending on the configuration of the device, changes at these inputs can
also trigger the sending of E-mails, SNMP traps and/or entries in the log of the
OSM. The use of these functions is described in the OSM/ESM Network
Management User Manual /1/.
Figure 3: OSM ITP53