Mennekes ACU Instructions D'installation page 52

Unknown Offline Authorization
With the activated "Unknown Offline Authorization"
function, charging is possible even if there is a
communication failure to the backend. Then everybody can
charge, even if they are not authorized with existing
communication.
Note the following points:
 The Open Charge Point Protocol v1.5 stores the
charging processes in the ACU and sends them to the
backend as soon as communication is restored.
 The Mennekes binary protocol does not save the
charging processes.
ACU Administration – Local Meter
With the ACU v3, a local EDL21 meter can be
connected directly to the ACU via the RJ-10 port. If a
local meter is connected directly to the ACU, additional
settings are required:
Fig. 9: ACU Administration – Local Meter
Parameters Description
Local Meter Activate when using a local meter
installed connected directly to the ACU v3.
Meter Only for meters according to IEC 61107.
address Address of the local meter connected
directly to the ACU v3 RJ10 port.
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