KC-P30 Charging Station
Auxiliary device
V1.03
23
© KEBA
Abbr.
Designation
Description/Possible values
TX
Reason for reading
B
... Start of the charging session
E
... End of the charging session
EF
Error indicator
4
E
... Energy
t
... Time
ST
State of the meter
RV
Value of the reading
RI
Identification of the value
In accordance with OBIS code
RU
Unit for
RV
Signature
SD
Signing of the data record
Hash encrypted with a private key for the
data for checking with the public key
1
User assignment level
●
NONE
: No assignment has been made.
●
HEARSAY
: The assignment is unsecured, e.g. authorization using RFID
card.
●
TRUSTED
: The assignment can be trusted under some conditions, e.g.
authorization using OCPP backend.
●
VERIFIED
: The assignment was verified by the signature component and
special measures.
●
CERTIFIED
: The assignment was certified by a cryptographic signature.
●
SECURE
: The assignment was established through a secure feature, e.g.
secure RFID card.
2
Time stamp
The time stamp of a signed measurement data record contains the system
time represented in accordance with ISO 8601. It is followed by the synchro-
nization state of the system clock to the legal time.
The following synchronization states are possible:
●
U
... Unsynchronized
●
I
... Time must be viewed as informative (absolutely and relatively)
●
R
... Time must be viewed as exact (relatively)
●
S
... Time is the legal time (in terms of calibration law)
The charging station only supports synchronization states
U
and
I
.
The time stamp on the measured values comes from a clock in the charging
station that is not certified in accordance with German measurement and
calibration law. Therefore, these times shall not be used for rating the mea-
sured values.
