MAC: UPS signalling via serial ports

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  • japlytic
    Badcaps Legend
    • Oct 2005
    • 2086
    • Australia
    #1

    MAC: UPS signalling via serial ports

    I have stumbled across a "smart" signalling UPS cable for a Macintosh (http://www.networkupstools.org/cables/mac-940-0024C.png) and I am wondering if there were any "dumb" signalling (Power Fail, Battery Low, and Shutdown) cables and software for Macs.

    The serial port has TxD (+/-), RxD (+/-), HSKi (Handshake IN), HSKo (Handshake Out - not fitted on 128K, 512K(e)), and +12V (128K, 512K(e) only).
    To use the serial port in RS-232 mode, RxD+ needs to be grounded.
    Some of the UPS cable wiring diagrams for PCs are on http://www.opennet.ru/docs/HOWTO/UPS-HOWTO-8.html
    Does anyone know of any "dumb" UPS signalling cables and software for the Macintosh?
    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.
    Tags: None
    • willawake
      Super Modulator
      • Nov 2003
      • 8457
      • Greece
      #2
      Re: MAC: UPS signalling via serial ports

      i dont know much at all about macs but APC has dumb and smart cables.

      are you talking about an APC ups?

      apcupsd works with usb and osx
      http://www.apcupsd.org/
      there is some more pinouts in the manual
      capacitor lab yachtmati techmati

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