System and method for associating a DLPDU received by an interface chip with a data measurement made by an external circuit
    1.
    发明授权
    System and method for associating a DLPDU received by an interface chip with a data measurement made by an external circuit 有权
    用于将由接口芯片接收的DLPDU与由外部电路进行的数据测量相关联的系统和方法

    公开(公告)号:US07234084B2

    公开(公告)日:2007-06-19

    申请号:US10781372

    申请日:2004-02-18

    CPC classification number: G05B23/0229

    Abstract: A diagnostic tool has a packet based network medium attachment unit, a measurement interface, a network interface, and a microprocessor for reading DLPDUs from a network segment and for taking simultaneous measurements of DLPDUs on the segment. The measurement data is associated with a stored DLPDU if the DLPDU is still active on the network segment when the measurement data is read by the microprocessor. The diagnostic tool utilizes a currently active attribute to determine the status of a DLPDU.

    Abstract translation: 诊断工具具有基于分组的网络介质附接单元,测量接口,网络接口和用于从网段读取DLPDU并用于同时测量该段上的DLPDU的微处理器。 如果微处理器读取测量数据时DLPDU在网段上仍然有效,则测量数据与存储的DLPDU相关联。 诊断工具利用当前活动的属性来确定DLPDU的状态。

    Low latency data packet reception and processing
    2.
    发明授权
    Low latency data packet reception and processing 有权
    低延迟数据包接收和处理

    公开(公告)号:US08060668B2

    公开(公告)日:2011-11-15

    申请号:US10936421

    申请日:2004-09-08

    CPC classification number: G06F13/385

    Abstract: Devices in a process control system communicate by data messages over a communication medium segment. Each device includes a communication controller that includes a data queue and a queue of received message objects. The data queue stores a plurality of messages received on the communication medium. The received message objects contain information about a corresponding message in the data queue.

    Abstract translation: 过程控制系统中的设备通过通信介质段上的数据消息进行通信。 每个设备包括通信控制器,其包括数据队列和接收到的消息对象的队列。 数据队列存储在通信介质上接收的多个消息。 接收到的消息对象包含有关数据队列中相应消息的信息。

    Communication controller for coordinating transmission of scheduled and unscheduled messages
    3.
    发明授权
    Communication controller for coordinating transmission of scheduled and unscheduled messages 有权
    用于协调预定和未预定消息传输的通信控制器

    公开(公告)号:US07496099B2

    公开(公告)日:2009-02-24

    申请号:US10903698

    申请日:2004-07-30

    CPC classification number: H04L67/325 H04L12/1881

    Abstract: A device on a process control network transmits scheduled messages at periodic intervals and unscheduled messages between scheduled message transmissions. A dynamic time remaining value is produced by subtracting a current timer value from a next scheduled event time each time the timer is incremented. If the time required to transmit an unscheduled message is greater than the time remaining value, the message is not transmitted.

    Abstract translation: 过程控制网络上的设备以周期性的间隔发送调度的消息,并在调度的消息传输之间发送非调度的消息。 通过从每次定时器递增的下一个调度的事件时间减去当前定时器值来产生动态时间剩余值。 如果发送非调度消息所需的时间大于剩余时间值,则不会发送消息。

    System and method for preventing transmission during message reception
    4.
    发明授权
    System and method for preventing transmission during message reception 有权
    消息接收时防止传输的系统和方法

    公开(公告)号:US07444427B2

    公开(公告)日:2008-10-28

    申请号:US10903399

    申请日:2004-07-30

    CPC classification number: H04L1/188

    Abstract: A communication controller in a device on a network automatically prevents transmission of data onto the network in response to a transmit request from a CPU of the device if a message is being received or has been received but not read or acknowledged.

    Abstract translation: 如果正在接收或已经接收到但未被读取或确认的消息,则网络中的设备中的通信控制器自动防止响应于来自设备的CPU的发送请求而将数据传输到网络。

    System and method for maintaining a common sense of time on a network segment
    6.
    发明授权
    System and method for maintaining a common sense of time on a network segment 有权
    用于在网段上维持常规时间感的系统和方法

    公开(公告)号:US07058089B2

    公开(公告)日:2006-06-06

    申请号:US10781374

    申请日:2004-02-18

    CPC classification number: H04J3/0697 H04J3/0638 H04J3/0655 H04J3/0664

    Abstract: The system has a control center, a time master device and a plurality of distributed, time slave field devices in synchronization with a master clock of the time master device. The time master device periodically transmits a time distribution data unit. Each time slave field device has a timer adjustment element, a fixed rate clock and a variable clock. The timer adjustment element calculates a frequency ratio between the master clock and the fixed rate clock and uses the frequency ratio to calculate adjustment coefficients to adjust a local sense of time for each field device, such that a time stamp of each field device is synchronized to the master clock.

    Abstract translation: 该系统具有与时间主设备的主时钟同步的控制中心,时间主设备和多个分布式时间从站现场设备。 时间主设备周期性地发送时间分布数据单元。 每个从站现场设备具有定时器调整元件,固定速率时钟和可变时钟。 定时器调整元件计算主时钟和固定速率时钟之间的频率比,并使用频率比来计算调整系数,以调整每个现场设备的局部时间感,使得每个现场设备的时间戳同步到 主时钟。

    Management of event order of occurrence on a network
    7.
    发明授权
    Management of event order of occurrence on a network 有权
    管理网络上的事件发生顺序

    公开(公告)号:US07779163B2

    公开(公告)日:2010-08-17

    申请号:US10936629

    申请日:2004-09-08

    Abstract: Devices in a process control system communicate by data messages over a communication medium segment. Each device includes a communication controller that maintains an order of occurrence of events received from and transmitted to a communication medium. The communication controller includes an order of occurrence identification (OOO_ID) counter and an event queue memory. The event queue memory sequentially stores an event type identifier for each event that is processed by the communication controller. The OOO_ID counter provides an OOO_ID to associate with each event type identifier.

    Abstract translation: 过程控制系统中的设备通过通信介质段上的数据消息进行通信。 每个设备包括通信控制器,其维持从通信介质接收和发送的事件的发生顺序。 通信控制器包括发生次序识别(OOO_ID)计数器和事件队列存储器。 事件队列存储器顺序地存储由通信控制器处理的每个事件的事件类型标识符。 OOO_ID计数器提供一个OOO_ID来与每个事件类型标识符相关联。

    Discarding a partially received message from a data queue
    8.
    发明授权
    Discarding a partially received message from a data queue 有权
    从数据队列中丢弃部分接收的消息

    公开(公告)号:US07694061B2

    公开(公告)日:2010-04-06

    申请号:US10936142

    申请日:2004-09-08

    Abstract: Devices in a process control system communicate by data messages over a communication medium segment. Each device includes a communication controller that includes a received data memory and a plurality of received message objects. When a message is received, a received message object is activated, and the initial position of a write pointer in the received data memory is stored in the received message object. During message reception, if a hardware device determines that the message is to be ignored, the received message object is deactivated, thereby preventing further writing of the message to the received data memory. The write pointer is then preferably returned to its initial position as stored in the received message object.

    Abstract translation: 过程控制系统中的设备通过通信介质段上的数据消息进行通信。 每个设备包括通信控制器,其包括接收的数据存储器和多个接收到的消息对象。 当接收到消息时,接收到的消息对象被激活,并且接收的数据存储器中的写指针的初始位置被存储在所接收的消息对象中。 在消息接收期间,如果硬件设备确定消息被忽略,则接收到的消息对象被去激活,从而防止将消息进一步写入接收的数据存储器。 然后,优选地,写入指针返回到其存储在所接收的消息对象中的初始位置。

    Multifunction aircraft windscreen wiper control system
    9.
    发明授权
    Multifunction aircraft windscreen wiper control system 失效
    多功能飞机风挡雨刮器控制系统

    公开(公告)号:US5404085A

    公开(公告)日:1995-04-04

    申请号:US910910

    申请日:1992-07-10

    CPC classification number: B60S1/08 B60S1/0807 Y10S318/02

    Abstract: A wiper control system which includes dual wiper control circuits operating from a single rotary control switch, which is mounted in a cockpit of an aircraft remote from the rest of the wipers and system components which are mounted near an aircraft windscreen in a housing from which a motor converter drive shaft protrudes generally normal to a portion of the airframe surface. The drive shaft is connected to one end of a wiper arm and the second end of the wiper arm is rotatably attached to the wiper blade. The dual wiper control circuits are electrically isolated from each other. The rotary switch includes dual voltage dividers and a single axial rotating member to create an analog voltage output signal representative of the control switch position which is interpreted by a controller circuit. The rotary switch speed selections include a HIGH speed, a LOW speed, an INTERMITTENT delay selection, and also a selection for PARK and OFF. The control circuit provides a digital signal input to a logic circuit which determines the rotary switch position and produces a digital output signal to an amplifier circuit that drives the windscreen wiper motor, which in turn drives the wiper arm at the selected speed. A function decoder and commutation logic device prevents motor overheating and power amplifier overheating.

    Abstract translation: 一种刮水器控制系统,其包括从单个旋转控制开关操作的双刮水器控制电路,其安装在远离其余擦拭器的飞行器的驾驶舱中,并且系统部件安装在壳体内的飞机挡风玻璃附近, 马达转换器驱动轴大致垂直于机身表面的一部分突出。 驱动轴连接到刮水器臂的一端,并且雨刷臂的第二端可旋转地附接到刮水片。 双刮水器控制电路彼此电隔离。 旋转开关包括双分压器和单个轴向旋转构件,以产生代表由控制器电路解释的控制开关位置的模拟电压输出信号。 旋转开关速度选择包括高速,低速,INTERMITTENT延迟选择,以及PARK和OFF的选择。 控制电路向逻辑电路提供数字信号输入,该逻辑电路确定旋转开关位置,并产生数字输出信号到放大器电路,该放大器电路驱动风挡玻璃刮水器电动机,该风挡玻璃刮水器电动机又以所选择的速度驱动雨刷臂。 功能解码器和换向逻辑器件可防止电机过热和功率放大器过热。

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