Feature request: EM24 Ethernet grid meter, phase to phase voltage monitor

Q&A and troubleshooting
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1

Hi, just run into a unpleasant situation where the grid malfunctioned, no voltage (or shorted somwhere on the way to me) between 2 phases.

Fronius reported an error but nothing clear.

Looking on the VRM, the grid meter is showing ~235V on all phases.

Had to go on site and cycle through EM24 menu to see that L1-L3 voltage is zero, L1-L2 - 405V, L2-L3 - 409V.

It would be great to also have access to other parameters measured by EM24, especially phase to phase voltage. Tried custom widget on VRM but no such data is exposed.

2

Not sure if this is just not exposed in VRM in general (which seems to be the case, from a quick look), a VM-3P75CT meter shows those values via the Home Assistant Integration via HACS.

3

The Carlo Gavazzi software show all data available on meter display, over the same ethernet connection.

It might only be a matter of reading extra registers/addresses through Venus OS.