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1. 发明专利

JPS62268299A MULTIPLEX SELECTION DETECTING METHOD 失效
公开(公告)号：JPS62268299A
公开(公告)日：1987-11-20
申请号：JP11080386
申请日：1986-05-16
申请人： HITACHI LTD
发明人： TOKITO KIYOSHI , NAKAYAMA KATSUYOSHI , TAKAZAWA SEIICHI , SUZUKI ATSUYUKI
IPC分类号： H04Q9/00 , H04Q9/16
摘要： PURPOSE:To prevent a miscontrol output beforehand by providing a multiplex action detection circuit which detects the presence or absence of the multiplex action of a control output and making it possible to prevent the multiplex output of a control command in a remote supervisory and controlling equipment. CONSTITUTION:In a multiplex action detection circuit 1 after the alternative action of a position by action signal 9 from a control output circuit 13 is detected, with a group Ry action signal 7 it is detected to coincide with a group signal 3 from a control signal output circuit 2 and an individual signal 5 and is stored, then a control output (Ry) nondefective action signal 10 is transmitted to the control output circuit 13. In the control output circuit 13 a nondefective action Ry 11 (OK) is operated by the control Ry nondefective action signal 10 from the multiplex action detection circuit 1 and when a position Ry contact is separated from the multiplex action detection circuit 1 by contacts OK-b and c, the control output is constituted by an OK-a to output a control command 12. Thus when a series of control output action is completed, the control signal from a master station is released.

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