No value at ESS SOCLowAlarm on Modbus

Hello, I have a problem with some modbus TCP adresses.
I want to read SOCLowAlarm, but I get no values.
I look in CCGX-Modbus-TCP-register-list-3.50.xlsx and found 3 adresses
3168, 4602 and 272 but no one give a value.
I have a MP-2 with Venus GX direct on Ethernet.
Generell the communication is OK, but I have some adresses without values.
In the VRM-Portal or the remote console I can see the values.
Has some one a idear?