Omnitron Systems Technology iConverter 2FXM User Manual - Manual (Page 7)

transmitting traffic to its link partner and store incoming frames from the other port in the internal buffer
until the congestion clears. If the internal buffer of the 2FXM becomes congested, it will transmit a Pause
frame to its link partner.
3.2.1.2 SW2 - Fiber Port 1 Full/Half-Duplex “FDX/HDX”
When the DIP-switch is in the Full Duplex “FDX” position (factory default), the fiber port will facilitate a
connection that supports Full-Duplex operation. Setting this DIP-switch to Half-Duplex “HDX” facilitates
a connection that supports only Half-Duplex.
3.2.1.3 SW3, SW4 - Reserved
These DIP-switches are for factory use only.
NOTE: DIP-switches marked Reserved must be kept in the LEFT (factory default) position.
3.2.1.5 SW5 - Fiber Port 2 Full/Half Duplex “FDX/HDX”
When the DIP-switch is in the Full Duplex “FDX” position (factory default), the fiber port will facilitate a
connection that supports Full-Duplex operation. Setting this DIP-switch to Half-Duplex “HDX” facilitates
a connection that supports only Half-Duplex.
3.2.1.6 SW6, SW7, SW8 - Link Modes
These three DIP-switches configure the link mode settings. The following table details possible Link Mode
DIP-switch configurations.
PI SA
SW6 SW7 SW8 Result
Left Left Left Enables Link Segment mode (LS).
Right Left Left Enables Link Propagate mode (LP).
Left Right Left
Enables Remote Fault Detection mode plus
Link Segment mode (RFD+LS).
Right Right Left
Enables Remote Fault Detection mode plus
Link Propagation mode (RFD+LP).
Left Left Right Enables Symmetrical Fault Detect mode (SFD).
Right Left Right Illegal setting. LS mode is enabled.
Left Right Right Illegal setting. LS mode is enabled.
Right Right Right Illegal setting. LS mode is enabled.
SW6 SW7 SW8 Result
Down Down Down Enables Link Segment mode (LS).
Up Down Down Enables Link Propagate mode (LP).
Down Up Down
Enables Remote Fault Detection mode plus
Link Segment mode (RFD+LS).
Up Up Down
Enables Remote Fault Detection mode plus
Link Propagation mode (RFD+LP).
Down Down Up Enables Symmetrical Fault Detect mode (SFD).
Up Down Up Illegal setting. LS mode is enabled.
Down Up Up Illegal setting. LS mode is enabled.
Up Up Up Illegal setting. LS mode is enabled.
NOTE: Connecting two converters set to any of the RFD modes are illegal and will cause a “deadly
embrace” lockup.
NOTE: It is recommended to keep the LS setting (default) until initial configuration is complete.
For detailed information on the operation of the different Link Modes, download the application note
“iConverter Link Modes” available on Omnitron’s web page:
http://www.omnitron-systems.com/downloads.php
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