公开(公告)号：EP1864268A2

公开(公告)日：2007-12-12

申请号：EP06738640.9

申请日：2006-03-16

申请人： Rosemount, Inc.

发明人： LONGSDORF, Randy, J. ,  HUISENGA, Garrie, D. ,  JOHNSON, James, A.

IPC分类号： G08C19/02

CPC分类号： G01R19/2509 ,  G05B19/0425 ,  G05B2219/25189 ,  G05B2219/25428 ,  G08C19/02

摘要： A process device (12) is configured for coupling to a two wire process control loop (18) . Loop current output circuitry (60) is configured to apply an output current to the two wire process control loop (18) . Loop current verification circuitry (64) is coupled to the two wire process control loop (18) and configured to detect errors in the applied output current. At least a portion of the loop current verification circuitry (64) is independent from the loop current output circuitry (60) .

公开(公告)号：EP0830646B1

公开(公告)日：2001-10-24

申请号：EP96920591.3

申请日：1996-05-31

申请人： ROSEMOUNT INC.

发明人： WESTFIELD, Brian, L. ,  ANDERSON, Stephen, D. ,  LOUWAGIE, Bennett, L. ,  PIECHOWSKI, Todd, A.

IPC分类号： G05B19/042 ,  G05B19/418

CPC分类号： G05B19/0423 ,  G05B19/4185 ,  G05B2219/25189 ,  G05B2219/25191 ,  G05B2219/31121 ,  G05B2219/31126 ,  G05B2219/31135 ,  G05B2219/33197 ,  Y02P90/18

摘要： Conversion circuitry (40) for use in a process control system (10) is adapted for coupling to a primary process control loop (26). Digital receiver circuitry (46, 52) in the conversion circuitry (40) receives a digital signal transmitted over the primary process control loop (26) from a field transmitter (22) and responsively provides a digital output. A microprocessor (50) receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry (62) for coupling to a secondary process control loop (58) receives the secondary loop control output from the microprocessor (50) and responsively controls current flowing through the secondary process control loop (58). The current flowing through the secondary process control loop (58) is related to the digital signal transmitted by the field transmitter (22).

公开(公告)号：EP0301736B1

公开(公告)日：1994-03-30

申请号：EP88306519.5

申请日：1988-07-15

申请人： DISTRIBUTED MATRIX CONTROLS INC.

发明人： McLeish, Anthony Barrington ,  Hill, Anthony ,  Darling, Jim ,  Dean, David Michael Moore

IPC分类号： G05B19/04

CPC分类号： G05B19/0423 ,  G05B2219/21012 ,  G05B2219/21085 ,  G05B2219/21086 ,  G05B2219/21087 ,  G05B2219/21088 ,  G05B2219/21113 ,  G05B2219/21117 ,  G05B2219/21119 ,  G05B2219/21126 ,  G05B2219/21127 ,  G05B2219/21137 ,  G05B2219/23368 ,  G05B2219/25088 ,  G05B2219/25089 ,  G05B2219/25127 ,  G05B2219/25189 ,  G05B2219/25428

公开(公告)号：EP0301736A1

公开(公告)日：1989-02-01

申请号：EP88306519.5

申请日：1988-07-15

申请人： DISTRIBUTED MATRIX CONTROLS INC.

发明人： McLeish, Anthony Barrington ,  Hill, Anthony ,  Darling, Jim ,  Dean, David Michael Moore

IPC分类号： G05B19/04

CPC分类号： G05B19/0423 ,  G05B2219/21012 ,  G05B2219/21085 ,  G05B2219/21086 ,  G05B2219/21087 ,  G05B2219/21088 ,  G05B2219/21113 ,  G05B2219/21117 ,  G05B2219/21119 ,  G05B2219/21126 ,  G05B2219/21127 ,  G05B2219/21137 ,  G05B2219/23368 ,  G05B2219/25088 ,  G05B2219/25089 ,  G05B2219/25127 ,  G05B2219/25189 ,  G05B2219/25428

摘要： This invention relates to a device (2) for sequentially sensing any input signals and providing any output signals, comprising; a microprocessor (6); a programmable memory (8) for defining said input signals and said output signals as having a selected form; multiplexers (12, 14, 16) controlled by said microprocessor (6) to sequentially select said input signals and said output signals; electrical components (20) controlled by said microprocessor (6) and programmable memory (8) for generating a digital bit stream for each sequentially selected input signal and output signal; circuitry (28, 30, 40) for translating said digital bit streams to an analogue signal; signal conditioning circuitry (18) activated by said analogue signal for sensing any input signal and providing any output signal defined by said programmable memory (8).

摘要翻译： 本发明涉及一种用于顺序感测任何输入信号并提供任何输出信号的装置（2），包括： 微处理器（6）; 用于将所述输入信号和所述输出信号定义为具有选定形式的可编程存储器（8） 由所述微处理器（6）控制的多路复用器（12,14,16）以顺序地选择所述输入信号和所述输出信号; 由所述微处理器（6）和可编程存储器（8）控制的电气部件（20），用于为每个顺序选择的输入信号和输出信号产生数字比特流; 用于将所述数字比特流转换为模拟信号的电路（28,30,40）; 由所述模拟信号激活的用于感测任何输入信号并提供由所述可编程存储器（8）定义的任何输出信号的信号调理电路（18）。

公开(公告)号：EP1864268B1

公开(公告)日：2016-09-21

申请号：EP06738640.9

申请日：2006-03-16

申请人： Rosemount Inc.

发明人： LONGSDORF, Randy, J. ,  HUISENGA, Garrie, D. ,  JOHNSON, James, A.

IPC分类号： G08C19/02

CPC分类号： G01R19/2509 ,  G05B19/0425 ,  G05B2219/25189 ,  G05B2219/25428 ,  G08C19/02

公开(公告)号：EP0830646A1

公开(公告)日：1998-03-25

申请号：EP96920591.0

申请日：1996-05-31

申请人： ROSEMOUNT INC.

发明人： WESTFIELD, Brian, L. ,  ANDERSON, Stephen, D. ,  LOUWAGIE, Bennett, L. ,  PIECHOWSKI, Todd, A.

IPC分类号： G05B11 ,  G05B19 ,  H04L25

CPC分类号： G05B19/0423 ,  G05B19/4185 ,  G05B2219/25189 ,  G05B2219/25191 ,  G05B2219/31121 ,  G05B2219/31126 ,  G05B2219/31135 ,  G05B2219/33197 ,  Y02P90/18

摘要： Conversion circuitry (40) for use in a process control system (10) is adapted for coupling to a primary process control loop (26). Digital receiver circuitry (46, 52) in the conversion circuitry (40) receives a digital signal transmitted over the primary process control loop (26) from a field transmitter (22) and responsively provides a digital output. A microprocessor (50) receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry (62) for coupling to a secondary process control loop (58) receives the secondary loop control output from the microprocessor (50) and responsively controls current flowing through the secondary process control loop (58). The current flowing through the secondary process control loop (58) is related to the digital signal transmitted by the field transmitter (22).