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I noticed the forwarded energy counter is only for the "active session". The total energy counter from the EVCS internal website is not available on modbus yet. Are there any plans to make it available ?
Trying to the use EVCS to get some expenses back from my employer. The modbus connection works ok'ish for this purpose but for reporting to a csv on a schedule it would be far better if the total energy counter can be logged as well.
Another reason for adding cumulative charged energy into the mix is that in its current state "overload protection", if hit hard enough, will stop the session thereby loosing the session counter data.
The car was charging last night but was not fully charged this morning. Most likely as DESS has charged the battery for a few hours, causing overload protection to kick in for too long ? Either way, session data is lost as the charger stops and needs manual restarting.
Setting autocharge will surely fix the car charging problem but will probably result in multiple sessions thereby depending on timely capture of the max value.
@Lucian Popescu (Victron Energy Staff) can you elaborate on overload protection timers causing the charging process to fully stop ?
let's say you are charging with 15 A, overload is detected > it will reduce to 12A, overload again > it will reduce to 10A ........>6A. If the system still detects overload at 6A(minimum charging current), EVCS will stop and not restart.
Or you can create a custom setup in node red or any other platform that will take care of charging
It's impossible to have a perfect setup for all the systems in the world, that's why we allow external control.
Yes it is.... But re-using the flow I have in HomeAssistant for my Elvi will only ensure a full EV in the morning. I don't think the EVCS will accept 0A as input so anything below 6 will end up in a stop request. Not sure, but doing that may result in loosing session totals?
So the original request still stands. Please make the cumulative kWh from the web interface available on modbus as well :-)
Other than that I cannot integrate it with DESS easily. Whereas I know Dirk-Jan probably likes to get your charging numbers and consumption for his forecast and schedule at some point after 3.20 becomes available. Something I cannot possibly build in node-red. I'm a VRM user for DESS btw, not node-red.
In my case the values are still low so only the numbers for 5024 are changing. But that number does not contain the same value as the number in the web interface.
For example, the web interface says 704.06kW for one of the units whereas 5024 only claims 4873. Please help.
(REG5023+(2^16) + REG5024)/100 = total power in kWh(float, 2 digits after point
Google is normally my friend but with the various suggestions out there to get from uint16 to 32float I have been unable to figure this out.
Please help.
Hi @kudos50 , I believe you can calculate the energy in using the following equation (REG5023 + 2^16 * REG5024). Explanation: the energy is recorded as uint32, but is split up in two 16-bit registers.
So in this case that would be (64230 + 65536*1) = 129.7660kWh.
Are you sure you are correctly reading those values?
