Microsoft KB Archive/98885

= Pin Connections for Cabling Between APC UPS and RS-232 =

Article ID: 98885

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1

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This article was previously published under Q98885



SUMMARY
If you are having difficulty getting your American Power Conversion (APC) uninterruptable power supply (UPS) system to work with Windows NT, it may be due to the serial cable you are using. The following information applies to APC Back-Ups models 250, 400, 450, 600, 900, and 1250.

Make sure the following pins are connected:   DB9 9-Pin Female Connector              DB9 9-Pin Male Connector (to PC serial port)                   (to UPS connector) Pin #5--Ground--Pin #4 Pin #8--Power Failure---Pin #2 Pin #4--UPS ShutdownPin #1 Pin #1--Low Battery-Pin #5--[10k ohm]--Pin #8 Note: unlisted pins need not be connected.



MORE INFORMATION
APC provides a cable that correctly connects their power supply unit to a PC. You can contact APC and order part #940-0020B.

Additional query words: prodnt

Keywords: kbhardware KB98885

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