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FANUC Robotics America GFK-1541B Manuel D’Utilisation

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Configuring Full-Duplex Operation
Before setting the module to Full-Duplex operation, be certain that it is connected directly to a
managed hub or switch that is manually configured for full-duplex operation on the port
connected to the IC693CMM321.
The default setting for the module is Half-Duplex.  The Full Duplex parameter is an “advanced
user parameter” that can only be changed by using the CHPARM (Change Parameter) command
in the Station Manager softwar. Refer to GFK-1186, the TCP/IP Ethernet Communications
Station Manager Manual
, for additional information on using Station Manager.
Warning
Contrary to the recommendation of IEEE Std. 802.3, this Ethernet Interface
module does NOT support autonegotiation of half/full-duplex.  Attempting full-
duplex operation of this interface with a repeater or half-duplex network
(including auto-negotiating hubs and switches) can cause severe network
performance degradation, increased collisions, late collisions, CRC errors, and
undetected data corruption.
If the module is configured in the Full-Duplex mode (see above), you can change it back to its
default value of Half-Duplex by using the Station Manager CHPARM command.
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