DESS / Modbus Registers

Q&A and troubleshooting DESS
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1

Having had a quick search around, I’ve not yet found a means of obtaining a central status from say the Cerbo surrounding what activity is being carried out by the DESS schedule.

For example, a system is running with DESS using Optimised without BatteryLife……

MPPT is feeding loads and charging battery.

DESS has now from schedule decided to charge from the grid. I can see the import figuratively from the grid and obviously via the schedule graph.

Previously, I would identify behaviour by checking the ESS mode - ie I used “keep batteries charged” and “w/o BatteryLife” as a “mode” to identify and set system behaviour. Is there a DESS status register that states what action the system is currently undertaking?

I’ve been through the Modbus register list and didn’t notice anything obvious against documentation.

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Nothing on modbus, but on the dbus you can check com.victronenergy.system and everything under the /DynamicESS path. Easiest way to read those values is probably using Node-RED with a custom input node. Also check that path under com.victronenergy.settings.

Haven’t gotten around yet to add a specific node for Dynamic ESS, but that will come.

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Excellent! Thanks @dfaber !
I’ll take a look at dbus. Does that mean that modbus will eventually get an update?