The safe switching method and device of automation bus system

The safe switching method and device of automation bus system

  • CN 103,186,133 B
  • Filed: 07/22/2005
  • Issued: 11/07/2017
  • Est. Priority Date: 07/22/2004
  • Status: Active Grant
First Claim
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1. a kind of operation automation system (1) is so as to the method in accordance with safety standard, wherein the automated system (1) has extremelyA few bus system (2) with connected bus user (21-29), and with central control equipment (3),Wherein, bus user can be switched to quasi- safe condition from normal operating state, and can be switched back into just from quasi- safe conditionNormal mode of operation is switched to safe end-state,And wherein, for quasi- safe condition, the programming of the bus user and/or parametrization can provide quasi- safe condition and only tie upThe maximum period of time of definable is held,Methods described includes:

  • By the control device (3) at least one bus user (24;

    27) parameterized and/or programmed,Pass through at least one described bus user (24;

    27) interruption related to the control device (3) is recognized,Pass through at least one described bus user (24;

    27), enter as pair identification of the interruption related to the control device (3)Row parametrization and/or the function of programming, at least one described bus user (24 of control;

    27) at least one output (241,242;

    272);

    At least one wherein described bus user (24;

    27) there is at least one input (271), and methods described includes passing through instituteState at least one bus user (24;

    27) signal of the input is estimated;

    Methods described also includes:

    If at least one described bus user (24;

    27) in the time interval (t than rule0) the long and execution in bus systemThe cycle very first time (t needed for handoff procedure1) in do not receive any signal from the control device (3), then it is described at leastOne bus user is identified by losing the regular time interval (t0) on it is data communication, with the control deviceRelated data communication short interruption, and transition status is switched to, wherein the transition status is quasi- safe condition, describedUnder quasi- safe condition, bus user (24;

    27) response by control device advance parametrization and/or programming Control and by totalAt least one component of line user'"'"'s control works on and the generation that is safe from danger at least one described component, andIf data communication is than the cycle very first time (t1) long the second time cycle (t2) in be resumed, then it is described totalLine user (24;

    27) normal operating is switched back into from quasi- safe condition, andIf data communication is than the cycle very first time (t1) long the second time cycle (t2) in be not resumed, then instituteState bus user (24;

    27) safe end-state is switched to from quasi- safe condition, under the safe end-state, by busAt least one component of user'"'"'s control is cut off and enters benign state.

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