Industrial controller and network card with buffer negotiation
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United States of America Patent
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-
Oct 8, 2002
Grant Date -
N/A
app pub date -
Sep 30, 1999
filing date -
Sep 30, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interface for a network communication card for industrial controllers uses a dual-port memory that may be re-partitioned by values communicated through the dual-port memory itself. A default partitioning and a non re-partitionable common area allow flexible re-partitioning without disrupting the communication necessary for the partition to take place. Negotiation between the controller and network card allow maximum flexibility in re-partitioning while respecting partitioning limits characteristic of the network card and its network.
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