Network system using management frames for supervising...

Details Network system using management frames for supervising... Network system using management frames for supervising...

2007-08-21

2007-08-21

Hartman, Jr., Ronald D (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Supervisory control

C701S036000, C709S200000, C709S236000, C709S238000, C709S252000, C370S251000, C370S254000, C370S258000, C700S019000

Reexamination Certificate

active

10242616

ABSTRACT:
In a network system, each ECU transmits a start control frame when to start, and is started when it receives the start control frame from any other ECU during the stop of its operation. Besides, each ECU transmits a stop control frame cyclically during its operation, and continues its operation in spite of being capable of stopping its operation, while it is receiving the stop control frame from any other ECU. In transmitting each of the frames, each ECU affixes cause information expressive of a start cause or an operation stop incapability cause to the frame. In stopping a network, a supervisory device specifies the start ECU and the start cause thereof from the start control frame and stores them in a nonvolatile memory.

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