apcsmart-old - Driver for American Power Conversion Smart Protocol UPS equipment

       Nigel Metheringham <Nigel.Metheringham@Intechnology.co.uk> (drawing heavily on the original apcsmart
       driver by Russell Kroll).

       This driver was called newapc for a time and was renamed in the 1.5 series.

       In 2.6.2 the driver was renamed to apcsmart-old, being superseded by updated version with new features
       which currently holds the apcsmart name.

       Some older APC UPS models return bogus data in the status register during a front panel test. This is
       usually detected and discarded, but some other unexpected values have occasionally slipped through.

       APC UPS models with both USB and serial ports require a power cycle when switching from USB communication
       to serial, and perhaps vice versa.

       This driver expects to see a 940-0024C cable or a clone by default. You can switch to the 940-0095B
       dual-mode cable support with the cable= definition described below.

       If your 940-0024C cable is broken or missing, use this diagram to build a clone:

       https://www.networkupstools.org/cables/940-0024C.jpg

       This driver supports the following optional settings in the ups.conf(5):

       cable=940-0095B
           Configure the serial port for the APC 940-0095B dual-mode cable.

       sdtype=num
           Use shutdown type num, according to this table:

           0
               soft shutdown or powerdown, depending on battery status

           1
               soft shutdown followed by powerdown

           2
               instant power off

           3
               power off with grace period

           4
               "force OB" hack method for CS 350

       Modes 0 and 1 will power up the load when power returns. Modes 2 and 3 will keep the load turned off when
       the power returns.

       Mode 4 exploits an oddity in the CS 350 models since they only seem to support the S command, but then
       only when running on battery. As a result, the driver will force the UPS to go on battery if necessary
       before sending the shutdown command. This ensures that the load gets reset.

       apcsmart-old - Driver for American Power Conversion Smart Protocol UPS equipment

Thecoredriver:nutupsdrv(8)

   Internetresources:
       The NUT (Network UPS Tools) home page: https://www.networkupstools.org/historic/v2.8.3/

Network UPS Tools 2.8.3                            07/08/2025                                    APCSMART-OLD(8)

       apcsmart-old should recognize all recent APC models that use a serial protocol at 2400 bps. This is
       primarily the Smart-UPS, Matrix-UPS and Back-UPS Pro lines.

       The driver attempts to support every bell and whistle of the APC reporting interface, whether or not this
       is strictly sensible.

       Some older hardware may only report a handful of variables. This is usually not a bug—they just don’t
       support anything else.

apcsmart-old -h

       apcsmart-old -a UPS_NAME [OPTIONS]

           Note

           This man page only documents the hardware-specific features of the apcsmart-old driver. For
           information about the core driver, see nutupsdrv(8).