Intelligent network interface circuit

Details Intelligent network interface circuit Intelligent network interface circuit

1990-08-15

1992-10-06

Atkinson, Charles E.

Excavating

371 33, H04L 116, G08C 2502

Patent

active

051538849

ABSTRACT:
An interface circuit couples a host processor in an industrial control system to a local area communications network. In includes a protocol machine for receiving and transmitting messages on the network and an interface controller which is programmed to implement one or more protocols. As a message is received by the protocol machine, the interface controller anticipates a responsive message which it writes to the protocol machine even as the message is being received. If the message is received accurately, the responsive message is transmitted without delay.

REFERENCES:
patent: 3824547 (1974-07-01), Green et al.
patent: 4149142 (1979-04-01), Kageyama et al.
patent: 4549297 (1985-10-01), Nishimoto
patent: 4750177 (1988-06-01), Hendrie et al.

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