With User State of Charge, you can set a range of usable real SOC. To set this range you need to go to Control Panel -> Configuration -> SOC/SOH -> User SOC config Parameters.
When the real value for the SoC is lower than ‘0% User SoC from Real SOC’ parameter, user SOC will be considered as 0%. Meanwhile if the real value for the SOC is higher than ‘100% User SoC from Real SOC’ value, then user SoC will be considered as 100%.
As Control Unit sends User SoC value, usable capacity will be limited, helping to extend battery life by setting the range in which the battery can be operated.