Communication

Control Network: The DeltaV Control Network provides communication between

the nodes in the DeltaV network.Refer to the Installing Your DeltaV Digital

Automation Systemmanual for complete information on the Control Network.

Local Bus: The Local Bus provides communication between DeltaV controllers

and SLS 1508 Logic Solvers and between DeltaV controllers and SISnet Repeaters.

Local Peer Bus (SISNet): SLS 1508 Logic Solvers communicatewith other SLS 1508

Logic Solvers and with local SISNet Repeaters through the carriers over

a 2 channel local peer bus.

The same message is broadcasted over both channels. The localpeer bus must

be terminated at both ends. The local peer bus is terminated at the left

end through the 2-wide power/controller carrier and at the right end

through a terminated 1-wide carrier.

The SISNet Repeaters can be located anywhere on a local peer bus – between

the DeltaV Controller(s) and the terminated 1-wide carrier.

Remote Peer Ring: SISNet Repeaters hosted by one DeltaV controller communicate

with SISNet Repeaters hosted by a different DeltaV controller over a fiber-optic remote peer ring.