On Nov 20, 2015, at 12:17 PM, Róbert SZAKSZ <[email protected]> wrote: > > No progress has been made: > > cable is UPS - PC > 6 - 3 > 7 - 5 > 9 - 2 >
Maybe pins 4 and 7 (ground) both need to be connected on the UPS side? > for ./blazer_ser -DDDDD -a infosec > 0.000000 send_to_all: SETINFO driver.parameter.port "/dev/ttyS1" > 0.000323 debug level is '5' > 0.103068 send_to_all: SETINFO device.type "ups" > 0.103104 send_to_all: SETINFO driver.version "2.7.3" > 0.103118 send_to_all: SETINFO driver.version.internal "1.56" > 0.103131 send_to_all: SETINFO driver.name "blazer_ser" > 0.103141 Trying megatec protocol... > 0.103687 send: 'Q1' > 1.105456 read: timeout > 1.105823 blazer_status: short reply Unfortunately, I don't think there is a safe way (in software) to determine whether the UPS is not receiving the signal, or whether the PC is not receiving the reply. If you have a multimeter, you could check pin 9 on the UPS relative to pin 4/7 to see if it is being driven negative. -- Charles Lepple clepple@gmail _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/nut-upsuser

