With a SmartShunt on our DC GenSet, it shows up as both a charging source and as negative DC load. To calculate the true DC load I have to subtract the genset output.
This seems like a Venus bug.
Can you share how you have the genset wired up?
Through a shunt, to the main bus bar. The batteries are Victron Smart Lithium, so the charge current goes through the BMS’s shunt too.
There is no DC Load shunt, just the calculated difference between BMS current and charge current.
Yea, that sounds logical to me. I think you’re right in that this is a bug. What happens if you disconnect the genset shunt (just the ve.direct cable, not the shunt itself)? Does it still show the neg DC load?
Unfortunately, this has been a minor error in the calculation of loads and generation via the shunts for quite some time. However, it has already been reported… but unfortunately not yet fixed… 
Even if you “reverse” the shunt in the configuration via Victron Connect… the DC load unfortunately remains negative.
The “bigger” problem here is the permanent reduction of the “total load” in VRM …
If, for example, you “get” 2 kW from the charger … you consume 2 kW less because of the incorrectly calculated total load in VRM …
sorry if OT, but i^m fascinated of that screenshot - want to have the DC-generator Tile for my extra power supply
How did you manage to get it there?
Are there any Github or whatever projects to fake these reading with MQTT or something else?
very interesting - so it should also be possible to fake this reading, import it to DBUs