Firstly find and buy cable on aliexpress by keywords «APC Smart UPS DB9, CP2102, USB RS232, serial 9 D-Sub, cable 940-0024C, Windows 7/8/10, Mac, Linux».
After that you need install apcupsd tools.
Run command:
# lsusb Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 10c4:ea60 Silicon Labs CP210x UART Bridge Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Change or create new file (by root user) /etc/udev/rules.d/local.rules:
#Bus 001 Device 002: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
ENV{ID_BUS}=="usb", ENV{ID_VENDOR_ID}=="10c4", ENV{ID_MODEL_ID}=="ea60", SYMLINK+="apc-usb"Change config /etc/apcupsd/apcupsd.conf
UPSCABLE smart UPSTYPE apcsmart DEVICE /dev/apc-usb
And fix line in file /etc/default/apcupsd on:
ISCONFIGURED=yes
Reboot system. On success you can see this (STATUS: ONLINE) for apcaccess command:
# apcaccess APC : 001,048,1097 DATE : 2023-02-20 20:15:42 +0300 HOSTNAME : on VERSION : 3.14.14 (31 May 2016) debian UPSNAME : UPS_IDEN CABLE : Custom Cable Smart DRIVER : APC Smart UPS (any) UPSMODE : Stand Alone STARTTIME: 2023-02-20 20:00:10 +0300 MODEL : Smart-UPS SC620 STATUS : ONLINE LINEV : 240.4 Volts LOADPCT : 9.1 Percent BCHARGE : 68.0 Percent TIMELEFT : 54.0 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds MAXLINEV : 240.4 Volts MINLINEV : 236.1 Volts OUTPUTV : 240.4 Volts SENSE : High DWAKE : 0 Seconds DSHUTD : 60 Seconds DLOWBATT : 2 Minutes LOTRANS : 208.0 Volts HITRANS : 253.0 Volts RETPCT : 0.0 Percent ALARMDEL : 5 Seconds BATTV : 13.6 Volts LINEFREQ : 50.0 Hz LASTXFER : Automatic or explicit self test NUMXFERS : 0 TONBATT : 0 Seconds CUMONBATT: 0 Seconds XOFFBATT : N/A SELFTEST : NO STESTI : 336 STATFLAG : 0x05000008 REG1 : 0x00 REG2 : 0x00 REG3 : 0x00 MANDATE : 03/20/07 SERIALNO : 3S0712X04316 BATTDATE : 03/20/07 NOMOUTV : 230 Volts NOMBATTV : 12.0 Volts FIRMWARE : 726.1.I END APC : 2023-02-20 20:16:01 +0300
PS: thanks a lot for clue from Thermionix gist on github: gist.github.com.