Apc uses a propietary serial cable and your convertar for sure it's wired standard. Refer to the following link for info. https://pinoutguide.com/UPS/apc_smart_cable_pinout.shtml
Good luck On Tue, 28 May 2019, 15:13 , <gru...@mailfence.com> wrote: > a friend gave me an old apc smart-ups 1250 > it has a rs232 interface but i have no pc with a rs232 port > i attempted to use a rs232 to usb adapter but the ups goes nuts > i connected the ups to batteries and verified it was working properly > when i plug the usb cable into the pc the ups shuts down > when i attempt to turn it on it beeps twice and shuts down > this all occurs before i start the nut software > other than give up or buy a new ups, any suggestions > > _______________________________________________ > Nut-upsuser mailing list > Nut-upsuser@alioth-lists.debian.net > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
_______________________________________________ Nut-upsuser mailing list Nut-upsuser@alioth-lists.debian.net https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
