发明公开
EP0047114A1 Data transmission system and an industrial robot using the system
失效
System zurÜbertragungvon Daten und ein Industrieroboter mit Verwendung des Systems。
- 专利标题： Data transmission system and an industrial robot using the system
- 专利标题（中）： System zurÜbertragungvon Daten und ein Industrieroboter mit Verwendung des Systems。
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申请号： EP81303831.2申请日： 1981-08-21
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公开(公告)号： EP0047114A1公开(公告)日： 1982-03-10
- 发明人: Inaba, Hajimu , Miyashita, Hideo
- 申请人： FANUC LTD.
- 申请人地址： 3580, Shibokusa Aza-Komanba, Oshinomura Minamitsuru-gun, Yamanashi 401-05 JP
- 专利权人： FANUC LTD.
- 当前专利权人： FANUC LTD.
- 当前专利权人地址： 3580, Shibokusa Aza-Komanba, Oshinomura Minamitsuru-gun, Yamanashi 401-05 JP
- 代理机构： George, Sidney Arthur (GB)
- 优先权： JP119828/80 19800901
- 主分类号： H04L1/22
- IPC分类号： H04L1/22 ; G05B23/02 ; G01R31/02 ; G05B19/42 ; B25J9/18
摘要：
A circuit for switching transmission lines and capable of detecting an interruption in the transmission lines comprises a plurality of pairs of transmission lines (24) which can transmit sets of digital signals with an opposite polarity to each other. A plurality of drivers (D 1 ,D 2 ---D n ) feed the signals to the transmission lines and a plurality of receivers (R 1 ,R 2 ---R n ) receive the transmitted signals. A plurality of AND gates (A 1 ,A 2 ---A n ) receive outputs from the receivers and an OR gate (23) receives the outputs from the AND gates. A respective exclusive-OR gate(31) is connected to each pair of transmission lines, and a respective filter (32) receives the output from each exclusive-OR gate and drives the respective AND gate. Thereby, when a transmission line (24) is interrupted, detection of the interrupted transmission line is carried out, and the transmission line is switched out so that the transmitted signal is not interrupted.
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