I attach upsesp2.c. Could you please run it on your upses (first stop nut to free the port) and send me the output. It will be helpful in providing a new driver version. Some new commands were discovered that give input & output phases. (They depend on bit-range measurements, i.e. value comes from bitx through bity for ups response). I also attach a compiled version. compile with: gcc upsesp2.c -o upsesp2 run with : ./upsesp2 /dev/ttyS0 thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.alioth.debian.org/pipermail/nut-upsdev/attachments/20100411/b826c94c/attachment-0001.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: upsesp2.zip Type: application/zip Size: 19893 bytes Desc: not available URL: <http://lists.alioth.debian.org/pipermail/nut-upsdev/attachments/20100411/b826c94c/attachment-0001.zip>