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21January2021/Version 0
LEM International SA
Chemin des Aulx 8
1228 PLAN-LES-OUATES Switzerland
www.lem.com
6.5.2. State symbols
The transaction screens are spread into 3 categories. Each category is associated to a symbol,
displayed during the whole duration of the category.
Transac
�
on
beginning
In progress
Transac
�
on
end
Transac
�
on
stop
Figure 37: State machine for transaction screens
6.5.3. Transaction energy register
During the whole sequence and until the return to the Idle screen, the transaction energy counter
is displayed.
Before the end of the transaction, the counter increments according to measured energy. The
currently incrementing register is the one displayed: either import or export register.
Registers can be identified using an associated symbol.
Import energy
i.e. from the energy grid to the vehicle
Export energy
i.e. from the vehicle back to the energy grid
Figure 38: Transaction energy register
After the end of the transaction, the final definitive value of the energy register is displayed. If the
import energy register is displayed alone, it means the export energy register was not used and
vice-versa (an unused register has an energy exactly equal to 0.000 kWh). In case both registers
were used, both are displayed successively.
