Electrical computers and digital processing systems: multicomput – Multiple network interconnecting
Reexamination Certificate
2006-09-12
2006-09-12
Maung, Zarni (Department: 2151)
Electrical computers and digital processing systems: multicomput
Multiple network interconnecting
C709S223000, C714S004110, C714S799000, C714S819000
Reexamination Certificate
active
07107358
ABSTRACT:
A bridge usable in a highly reliable industrial control system provides an interface between a producer module transmitting redundant messages in accordance with a communication protocol and a consumer module receiving the messages in accordance with a different communication protocol. The bridge includes a first network interface receiving two messages from the producer, a microprocessor capable of converting the messages from the producer communication protocol to consumer communication protocol, and a second network interface transmitting the messages to the consumer. One of the messages is reversible altered with respect to the other message. The altered message is uninverted in the consumer module, and compared to the other message to ensure that no transmission errors have occurred.
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Lenner Joseph A.
Vasko David A.
Baxter Keith M.
Maung Zarni
Phillips Hassan
Rockwell Automation Technologies Inc.
Speroff R. Scott
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