Fail Check Device and method for switching signal lines
    2.
    发明授权
    Fail Check Device and method for switching signal lines 失效
    故障检查设备和切换信号线的方法

    公开(公告)号:US5737199A

    公开(公告)日:1998-04-07

    申请号:US677836

    申请日:1996-07-10

    CPC分类号: H02H7/122 H02H5/10

    摘要: A fail check device and method for switching signal lines, wherein PWM signals are sent out onto PWM signal lines through a PWM signal output/survey circuit. Based on the level of the PWM signals to be sent out and the level of the PWM signals actually sent out, a PWM mismatch signal (logical) is produced. The produced PWM mismatch signal (logical) has a value which indicates a fault when the PWM signal lines are in a state of breakage or short circuit to a ground or the PWM signal lines in a predrive circuit are short-circuited to the positive wiring of a power source. Therefore, by using the PWM mismatch signal (logical), a breakage in the PWM signal lines or a fault in the predrive circuit can be detected by a control CPU.

    摘要翻译: 用于切换信号线的故障检查装置和方法,其中PWM信号通过PWM信号输出/测量电路发送到PWM信号线上。 基于要发送的PWM信号的电平和实际发送的PWM信号的电平,产生PWM失配信号(逻辑)。 产生的PWM失配信号(逻辑)具有指示当PWM信号线处于接地断线或短路状态时的故障或预制电路中的PWM信号线短路到正极的正极 电源。 因此,通过使用PWM失配信号(逻辑),可以通过控制CPU检测PWM信号线的断线或预驱动电路的故障。

    Diagnostic system and method for detecting retardation of an object
controlled by a programmable controller
    3.
    发明授权
    Diagnostic system and method for detecting retardation of an object controlled by a programmable controller 失效
    用于检测由可编程控制器控制的物体的延迟的诊断系统和方法

    公开(公告)号:US5315500A

    公开(公告)日:1994-05-24

    申请号:US828177

    申请日:1992-01-30

    CPC分类号: G05B19/058 Y02P90/265

    摘要: A diagnostic system and method for detecting retardation of a object controlled by a programmable controller. The system may include a microprocessor system with a keyboard, a printer, a memory card, and a telecommunications line which is connected to one or more programmable controllers. This system reads operational commands and signals, representing the completion of an operation, through the telecommunications line. If any retardation occurs, the diagnostic system fetches a series of operation commands, and identifies the logical address where retardation occurs.

    摘要翻译: 一种用于检测由可编程控制器控制的物体的延迟的诊断系统和方法。 该系统可以包括具有键盘,打印机,存储卡和连接到一个或多个可编程控制器的电信线路的微处理器系统。 该系统通过电信线路读取表示操作完成的操作命令和信号。 如果发生任何延迟,诊断系统将获取一系列操作命令,并识别发生延迟的逻辑地址。