Emerson MVME55006E-0163 - DCS Distributed I/O Unit Module

LSN Description and Specification

The SZ controllers and CSLSs can be physically connected

as a star topology (the LSN does not support network ring topologies).

Starting with DeltaV SIS v13. the LSN Bridge (LSNB) allows

communication across multiple LSNs. The LSNB connect

to the LSN following a star topology.

Refer to the latest DeltaV SIS Installation and Planning Guide

for details of network layouts and network cable shielding

requirements and power and grounding requirements for

the overall DeltaV SIS system.

Fiberoptic Wiring

Safety network ports (SNP) on the CSLS are available for

copper only. DeltaV SIS Smart Switches can be connected

using fiberoptic cables.

Because fiberoptic cables do not conduct electricity,

they should be used in connections between buildings

or in plant areas where electromagnetic interference is present.

Fiberoptic cabling must be used where cable runs are longer

than 100 meters (328 ft.).

LSN Hardware Includes:

„ NextGen DeltaV SIS Smart Switches

„ Ethernet Isolation Ports on the SZ Controller

„ SNPs on the CSLS carrier

„ LSNB to communicate with other LSNs through a GSN.