EV Charger can't read any 5xxx Modbus Register, 38xx work

[vicky]

My EVCS is connected to a VenusGX which perfectly works to read/write the 38xx registers using ioBroker/Modbus adapter V6.3.2.
However I am unable to read/write the 5xxx registers which offer a lot more EVCS functionality.
Tried various settings for hours, no success yet

I tried to use the EVCS IP 192.168.178.117 directly and use ID 1, no success either

[vicky]

I did a Test using QModMaster. Same result. I can read the 38xx registers, but I cannot read any of the 5xxx registers. So it is not an ioBroker issue. Is there anybody out there - having had success to read the 5xxx registers?

[vicky]

I did’t have any success yet. Still hoping there is somebody using the 5xxx registers to monitor and control the EV Charger.
Any help apprecciated

[Nicolas]

Hello @vicky. 5xxx registers are located on the EVCS, 38xx registers are located on the GX.
So, double-check these points:

1. The PC where you run QModMaster or iobroker. Modbus has access to EVCS(ie, EVCS and your PC in the same network)
2. 5xxx registers should be requested from the EVCS IP address
3. Port 502, function 3(read holding registers)
4. Maybe increase the response delay up to seconds(1-3) and decrease pull rate(up to 3-5 times per second).

[vicky]

@Nicolas
Using the EV Chargers IP worked right away. Stupid I - should have figured this out on my own…
Thank you for the help