EDS-408A/405A Series User’s Manual Featured Functions
3-10
DIP Switch Setting Description
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Serves no function (reserved for future use).
ON
Enables the EDS-408A/405A to be the Ring Master in a Turbo
Ring topology, and enables the Turbo Ring break warning. If
the EDS-408A/405A is the Master of this Turbo Ring, and the
Turbo Ring is broken, the relay will form an open circuit.
MASTER
OFF
Disables the EDS-408A/405A from being the Ring Master in a
Turbo Ring topology, and disables the Turbo Ring break
warning.
ON
Enables the Turbo Ring coupling function. Uses ports 5 and 6 of
EDS-408A (ports 2 and 3 of EDS-405A) to form the Ring
Coupler path.
COUPLER
OFF Disables the Turbo Ring coupling function.
ON
Enables plug-and-play Turbo Ring redundancy. Ports 7 and 8 of
EDS-408A (ports 4 and 5 of EDS-405A) are used to form a
Turbo Ring.
TURBO RING
OFF Disables plug-and-play Turbo Ring redundancy function.
DIP Switch Hardware Configuration
DIP Switch
Turbo Ring DIP
Switch
Description
ON y Turbo Ring Ports
EDS-405A: Port 4 & Port 5
EDS-408A: Port 7 & Port 8
y Coupling Ports
EDS-405A: Port 2 & Port 3
EDS-408A: Port 5 & Port 6
y Automatically adds the Turbo Ring and Ring Coupling
ports to the VLANs that you already specified using
the web interface.
Enable
OFF The DIP Switch for Coupler and Master will not take
effect; you can also set up the Turbo Ring by software
ON
Disable
OFF
The DIP Switch for Coupler and Master will not take
effect; you can also set up the Turbo Ring by software
NOTE
To switch on the Master or Coupler functions of the DIP switch, you must enable the Turbo Ring
DIP Switch first.
NOTE
If you do not enable any of the EDS-408A/405A switches to be the Ring Master, the Turbo Ring
protocol will automatically choose the EDS-408A/405A with the smallest MAC address range to
be the Ring Master. If you accidentally enable more than one EDS-408A/405A to be the Ring
Master, these EDS-408A/405A switches will auto-negotiate to determine which one will be the
Ring Master.
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