apc_modbus: follow-up wanted regarding Main Outlet Group operations

[jimklimov]

          > Cheers, how is it going here? Do you plan to post some updates shortly, or is (from your viewpoint) the change OK to merge as is and follow up on specific problems and improvements later?

Sorry, it has been difficult for me to find time to work on this lately. I just was able to test the outlet commands and it seems that the outlet specific commands for outlet group 1, which is the only one I have, all work for me. What does not work are the outlet commands that specify the MOG (main outlet group). I'm not sure if that group is actually supposed to be switchable. I'll check the documentation some more.

Originally posted by @EchterAgo in #2184 (comment)

NOTE: Possibly some more questions raised in that PR and original issue #2119 are to be followed up too.

[piotrekszala]

Hi, I have APC SMT-750IC connected using driver apc_modbus (v2.8.2) over TCP.
Reading data from UPS also works as expected but commands to shutdown or switch load/output do not work at all.
However commands to trigger: test.battery.start or test.panel.start work just fine.
This issue actually prevents nut from performing a UPS shutdown when FSD occurs.

Here are the reported available commands:

sudo /usr/local/ups/bin/upscmd -l smart-ups@localhost
Instant commands supported on UPS [smart-ups]:

beeper.mute - Temporarily mute the UPS beeper
bypass.start - Put the UPS in bypass mode
bypass.stop - Take the UPS out of bypass mode
calibrate.start - Start run time calibration
calibrate.stop - Stop run time calibration
driver.killpower - Tell the driver daemon to initiate UPS shutdown; should be unlocked with driver.flag.allow_killpower option or variable setting
driver.reload - Reload running driver configuration from the file system (only works for changes in some options)
driver.reload-or-error - Reload running driver configuration from the file system (only works for changes in some options); return an error if something changed and could not be applied live (so the caller can restart it with new options)
driver.reload-or-exit - Reload running driver configuration from the file system (only works for changes in some options); exit the running driver if something changed and could not be applied live (so service management framework can restart it with new options)
load.off - Turn off the load immediately
load.off.delay - Turn off the load with a delay (seconds)
load.on - Turn on the load immediately
load.on.delay - Turn on the load with a delay (seconds)
outlet.0.load.cycle - Description unavailable
outlet.0.load.off - Description unavailable
outlet.0.load.on - Description unavailable
outlet.0.shutdown.return - Description unavailable
outlet.1.load.cycle - Description unavailable
outlet.1.load.off - Turn off the load on outlet 1 immediately
outlet.1.load.on - Turn on the load on outlet 1 immediately
outlet.1.shutdown.return - Turn off the outlet 1 and return when power is back
outlet.2.load.cycle - Description unavailable
outlet.2.load.off - Turn off the load on outlet 2 immediately
outlet.2.load.on - Turn on the load on outlet 2 immediately
outlet.2.shutdown.return - Turn off the outlet 2 and return when power is back
outlet.3.load.cycle - Description unavailable
outlet.3.load.off - Description unavailable
outlet.3.load.on - Description unavailable
outlet.3.shutdown.return - Description unavailable
shutdown.reboot - Shut down the load briefly while rebooting the UPS
shutdown.reboot.graceful - Delay briefly then shut down the load while rebooting the UPS
shutdown.return - Turn off the load and return when power is back
shutdown.stayoff - Turn off the load and remain off
test.battery.start - Start a battery test
test.battery.stop - Stop the battery test
test.panel.start - Start testing the UPS panel

Running any of the failing commands returns OK but no action is performed:

sudo /usr/local/ups/bin/upscmd -u apc -p XXXXXX smart-ups@localhost shutdown.reboot
OK