Modbus: is there an equivalent register for "acu"

[git5any]

Hi,
I use MQTT to read and control my go-E charger (homefix 11kw HW v3 FW 60.5).
Right now I start with modbus and it works quite well, but I'm missing a register with the acu: How many ampere is the car allowed to charge now?
Is it available or do I need to read the AMP_L1-3, 114-119 an do some calculation on it?

Thank you very much for any help

[git5any]

and another question is the Error:
the API says, Key "err" = charge ctrl error, null if no connection to charge ctrl established (None=0, F iAc=1, FiDc=2, Phase=3, Overvolt=4, Overamp=5, Diode=6, PpInvalid=7, GndInvalid=8, ContactorStuck=9, ContactorMiss=10, StatusLockStuckOpen=12, StatusLockStuckLocked=13, FiUnknown=14, Unknown=15, Overtemp=16, NoComm=17, CpInvalid=18, RdcSelfTestFailed=23)

The modbus register 30108(107) ERROR = 1: RCCB (Residual current circuit breaker)
3: PHASE (phase disturbance)
8: NO_GROUND (Ground detection)
10, default: INTERNAL (Others)

As I have never seen an error (and I hope that stays like it is) it would be nice to know which values can be seen in modbus-register.