[Nut-upsuser] MGE ESV+ and Power Trim

[Charles Lepple]

On Mar 3, 2017, at 8:21 AM, Charles Lepple <clepple at gmail.com> wrote:
> 
> On Mar 2, 2017, at 3:38 PM, David Baker <david at baker.im> wrote:
>> 
>> I’ve read the documentation, and it would appear that this can be set by the U-Talk protocol (page 34 of http://networkupstools.org/protocols/mge/9261zwfa.pdf) but I can’t seem to figure out how to send the device the command, or manage to terminal into the unit (once disabling NUT services) and send the command.
>> 
>> I think the command would be Lv 24000.
>> 
> In theory, you could change the following line:
> 
> https://github.com/networkupstools/nut/blob/v2.7.4/drivers/mge-utalk.h#L220
> 
> from "{ "output.voltage", 0, 0, "Lv", "%05.1f", VOLT, TRUE },"
> 
> to "{ "output.voltage", ST_FLAG_RW | ST_FLAG_STRING, 5, "Lv", "%05.1f", VOLT, TRUE },"
> 
> This would allow you to use the "upsrw" command to set the voltage (with appropriate scaling).
> 
> Do you have a development environment set up for the Raspberry Pi?

Sorry, I think I read the protocol document too quickly.

Is it maybe "Iv 24000" (inverter voltage)? It doesn't look like the current driver reads or writes the inverter settings.

Arnaud, do you have any additional insight on the difference between setting output voltage and inverter voltage?