DalyBMS current fluctuating/jumping around

[misterm15]

Describe the problem

Hello,

i´ve one daly BMS (12S Li-Ion) running via Dbuserial on my CerboGX. I see all data and everything seems to be fine. One thing which i discover is a hughe fluctuating in current values compared to the charger or AC power values. In attached picture you can see that the charger is more or less constanly or stable outputting a current while the bms jumps around.

Do you know if this is a known bug in dbusserial or is already the BMS data invalid / the issue?

Driver version

v1.0.2023053

Venus OS device type

Cerbo GX

Venus OS version

3.14

BMS type

Daly Smart BMS

Cell count

12

Battery count

1

Connection type

Serial USB adapter to TTL

Config file

BMS_TYPE = Daly
 INVERT_CURRENT_MEASUREMENT = -1
 MAX_BATTERY_CHARGE_CURRENT = 35.0
 MAX_BATTERY_DISCHARGE_CURRENT = 35.0
 MIN_CELL_VOLTAGE   = 3.40
 MAX_CELL_VOLTAGE   = 4.13
 FLOAT_CELL_VOLTAGE = 4.05
 CVCM_ENABLE = False
 BLOCK_ON_DISCONNECT = True
 LINEAR_LIMITATION_ENABLE = False
 CCCM_CV_ENABLE = False
 DCCM_CV_ENABLE = False
 CCCM_T_ENABLE = False
 DCCM_T_ENABLE = False

Relevant log output

not needed

Any other information that may be helpful

No response

[rbeudel]

Take a look into the Daly Software. There will be same jumping. If it is, call your Daly Dealer for a inverter firmware for your special BMS Hardware.

[mr-manuel]

I never saw a fluctiation caused by the driver. The driver only gets the data from the BMS and is not modified in this case for the current. As @rbeudel said, check directly on your BMS.