公开(公告)号：AU3883500A

公开(公告)日：2000-10-04

申请号：AU3883500

申请日：2000-03-14

Applicant: ROSEMOUNT INC

Inventor： DAVIS BRUCE B ,  KAMMANN PAUL D

IPC: G05B15/02 ,  G05B19/042 ,  G05B19/418

Abstract: A method and apparatus are provided to allow at least portions of two fieldbus messages to be stored in a fieldbus device. The fieldbus device includes a media access unit, a fieldbus communication controller, and a controller. The media access unit is coupleable to a fieldbus loop to receive fieldbus signals and provide a digital bitstream related to the fieldbus signals. The fieldbus communication controller assembles data segments relating to at least portions of two fieldbus messages from the bitstream and stores the segments in a receive FIFO memory. The controller is adapted: to read the segments from the receive FIFO memory and act upon fieldbus messages.

公开(公告)号：BR0009092A

公开(公告)日：2002-01-15

申请号：BR0009092

申请日：2000-03-14

Applicant: ROSEMOUNT INC

Inventor： DAVIS BRUCE B ,  KAMMANN PAUL D

IPC: G05B15/02 ,  G05B19/042 ,  G05B19/418

Abstract: A method and apparatus are provided to allow at least portions of two fieldbus messages to be stored in a fieldbus device. The fieldbus device includes a media access unit, a fieldbus communication controller, and a controller. The media access unit is coupleable to a fieldbus loop to receive fieldbus signals and provide a digital bitstream related to the fieldbus signals. The fieldbus communication controller assembles data segments relating to at least portions of two fieldbus messages from the bitstream and stores the segments in a receive FIFO memory. The controller is adapted: to read the segments from the receive FIFO memory and act upon fieldbus messages.

公开(公告)号：CA2367689A1

公开(公告)日：2000-09-21

申请号：CA2367689

申请日：2000-03-14

Applicant: ROSEMOUNT INC

Inventor： KAMMANN PAUL D ,  DAVIS BRUCE B

IPC: G05B15/02 ,  G05B19/042 ,  G05B19/418

Abstract: A method and apparatus are provided to allow at least portions of two fieldb us messages to be stored in a fieldbus device (30). The fieldbus device (30) includes a media access unit (32), a fieldbus communication controller (34), and a controller (36). The media access unit (32) is coupleable to a fieldbu s loop (12) to receive fieldbus signals and provide a digital bitstream relate d to the fieldbus signals. The fieldbus communication controller (36) assemble s data segments relating to at least portions of two fieldbus messages from th e bitstream and stores the segments in a receive FIFO memory (46). The controller (36) is adapted to read the segments from the receive FIFO (46) memory and act upon fieldbus messages.