Moxa Technologies EtherDevice User Manual page 77

When you enable "Turbo Ring with EDS series", you could connect both
ED6008s and other EDSs within one Turbo Ring and use this kind of ring
coupling topology shown as above.
STEP 1
Select two EDSs in left Turbo Ring and two EDSs in the right Turbo Ring that
will be coupling channels between left and right Turbo Ring. Then enter
Communication Redundancy page and select "Turbo Ring with EDS series"
from "Protocol of Redundancy" for each one among these four EDSs
STEP 2
Only check the circled EDS with "Enable Redundant Ring Coupling"
STEP 3
Connect two EDSs' port 5 of left Turbo Ring to another two EDSs' port 5 of
right Turbo Ring as the coupling line. Then connect circled EDS's port 6 with
another EDS's port 6 in left Turbo Ring as the control line.
The line connected to the port 5 of the circled EDS with "Enable Redundant
Ring Coupling" will be the backup path.
NOTE Checking "Enable Redundant Ring Coupling" before connecting
coupling line.
Only check one of four EDSs with "Enable Redundant Ring
Coupling."
Port 5 is designated as the coupling port, whereas port 6 is
designated as the control port.
MOXA EtherDevice Server User's Manual 3-49
Featured Functions