Appendix E; 14.1 Fieldbus Wiring Considerations; Fieldbus Topologies; Figure 50 Overview Of Fieldbus Wiring Topologies - Honeywell Series A User Manual

14.1 Fieldbus Wiring Considerations

Fieldbus topologies

The following figure illustrates the Spur, Daisy Chain, and Tree type wiring topologies
that can be used to connect fieldbus devices to one another and a host.
Spur Topology
Reguires layout design
Requires taps
Difficult to change
Daisy Chain Topology
Requires layout design
Difficult to change
Difficult to maintain
Tree Topology
Conforms to present
practices
Wiring savings are
realized only in
"home run" cable
R400 Experion PKS Series A Fieldbus Interface Module User's Guide
July 2010

14. Appendix E

Control Room
Terminator
Host
I.S.
Barrier
(Optional)
Terminator
Host
I.S.
Barrier
(Optional)
Terminator
Host
I.S.
Barrier
(Optional)

Figure 50 Overview of fieldbus wiring topologies

Honeywell
Spurs
(Unterminated)
FD FD
"Home Run" Cable (Trunk)
FD
FD
Junction Box
and Terminator
"Home Run" Cable (Trunk)
Junction Box
and Terminator
FD
Junction Box
and Terminator
FD
FD
FD
FD
511