Michail Pappas wrote:
Hello all,
> [...]
Now, please bear with me, my C skills are long gone and forgotten, plus my understanding of UPS operation is next to non-existent. In any case though from above, I see that NUT receives the following info:1.546786 send_to_all: SETINFO battery.voltage "2.25" [...] 5.437187 send_to_all: SETINFO battery.voltage "270.00" I think I found 2 problems, one of them an issue and another a bug. The issue first. According to the values above, NUT tries to autodetect the number of battery packs. LThe battery packs detection code in blazer.c is as follows: static double blazer_packs(const char *ptr, char **endptr) 135{ 136 const double packs[] = { 137 120, 100, 80, 60, 48, 36, 30, 24, 18, 12, 8, 6, 4, 3, 2, 1, 0.5, -1 138 }; 139 140 const char *val; 141 int i; 142 143 val = dstate_getinfo("battery.voltage.nominal"); 144 145 batt.volt.nom = strtod(val ? val : ptr, endptr); 146 147 for (i = 0; packs[i] > 0; i++) { 148 149 if (packs[i] * batt.volt.act > 1.2 * batt.volt.nom) { 150 continue; 151 } 152 153 if (packs[i] * batt.volt.act < 0.8 * batt.volt.nom) { 154 upslogx(LOG_INFO, "Can't autodetect number of battery packs [%.0f/%.2f]", batt.volt.nom, batt.volt.act); 155 break; 156 } 157 158 batt.packs = packs[i]; 159 break; 160 } 161 162 return batt.volt.nom; 163} Like I said, the VGN has battery strings of 20 batteries each. I would then expect for battery.packs to be equal to 120 (20 batteries * 6 plates per battery). This does not happen. batt.volt.nom is 271.4 and the cell has a voltage of 2.25 (see above) so the detection algorithm does not succeed when trying "120" as the packs[i] value... I am not sure whether this is an issue or not. Or, if it is one, if the detection algorithm can be improved.
Mea culpa, I must have made an error here: batt.packs should be the correct number 120, after the snippet above completes! So no problem/issue there.
The problem with the miscalc when runtime values are entered have something to do with the fact that voltage is calculated to be 270V, which is lower than the nominal value of 271.4V, as reported by the UPS...
It feels as though a correction is only possible by adjusting override.battery.voltage.nominal. Any ideas as to some decent values I could use?
Plus, in which source file is override.battery.voltage.nominal read from? BR, Michael.- _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser
