| 摘要 |
<p>PURPOSE:To restore electrical equipment to a nonhazaedous state so quickly by installing a malfunction detector and a safety circuit in a control station which controls the electrical equipment on the basis of control data being fed out of other control stations. CONSTITUTION:An information processing circuit judges that there is something wrong by the specified trouble criterion when it has read a signal in an abnormal condition, and thereby it delivers control data having a trouble monitoring part varied if it is abnormal. Accordingly, when such control data that the trouble monitoring part is varied are received by control stations 3a-3f controlling electrical equipment 9 on the basis of the control data, a malfunction detector 7 outputs a malfunction detection signal through which a safety circuit 8 forcedly leads this electrical equipment 9 to a specified safety state. In this connection, since the information processing circuit delivers such control data that the trouble monitoring part is not changed at a normal condition, the malfunction detector 7 of the control stations 3a-3f does not output the malfunction detecting signal, so that the electrical equipment 9 is controlled as the control data.</p> |
