Unable to understand the way to get data from a sunspec device

[phgachoud]

Hi,
Sorry but after reading many times the Interacting with a sunspec device, I'm still unable to understand how to read values from a device. I'm able to get data from common and inverter with

l_d.common.SN

In my case, I'm trying to get the informations from the power limitation of an SMA device (inverter manager). I have the following device models:

['common', 'model_11', 'model_12', 'inverter', 'nameplate', 'settings', 'status', 'controls', 'storage', 'volt_var', 'freq_watt_param', 'reactive_current', 'watt_pf', 'volt_watt',
'mppt', 'lvrt', 'hvrt', 'base_met', 'mini_met']

after using this code:

l_d = client.SunSpecClientDevice(client.TCP, l_modbus_slave_address, ipaddr=l_ip_address, timeout=l_timeout)
l_d.inverter.read() # retreives latest inverter model contents
l_d.common.read()
self.__logger.info("--> ************* device models *************: %s" % (l_d.models))   

after that, I get followings when I do a:

self.__logger.info("-->inverter ************* reactive_current *************: %s" % (l_d.reactive_current)) 

=> => =>
inverter ************* reactive_current *************:
reactive_current (128):

How can I read the data of the 128 block? or storage? I still don't understand :-(

Thx !!