MCS301 - 3ph meter Page 54 of 142
MCS301 meter - product Manual 1.25 MetCom Solutions GmbH
13.1.2 Buffer reading
The reading of the buffer can be done by two different methods as follows:
•
Normal Reading;
•
Compressed Reading;
In “Normal Reading”, all buffer entries within the “From/To” range (Time-based selective
access by Range) including the values at the boundaries of range, will be returned.
In “Compressed Reading”, the compressed method introduced in IDIS Package 2 is used
and offers 3 possibilities
•
(01b) – No Compression,
•
(10b) – Partial Compression (entries with midnight timestamp are not compressed)
•
(11b) – Total Compression
13.1.3 Profile Status
The Profile Status provides complementary information about the stored values in profiles
buffer. The HES/MDM system will use this information to decide about the validity of
collected values. The content of Profile Status is captured for every entry (in buffer). The size
of the Profile Status is one byte. Each bit shows a critical situation in the meter as shown in
following figures for different profile status.
7 PDN
Power down:
This bit is set to indicate that a total power outage has been detected during
the affected capture period.
6 RSV
Reserved: The reserved bit is always set to 0.
5 CAD
Clock adjusted: The bit is set when the clock has been adjusted by more than
the synchronization limit
4 RSV
Reserved: The reserved bit is always set to 0.
3 DST
Daylight saving: Indicates whether or not the daylight saving time is currently
active. The bit is set if the daylight saving time is active (summer) and cleared
during normal time (winter).
2 DNV
Data not valid: Indicates that the current entry may not be used for billing
purposes without further validation because a special event has occurred
1 CIV
Clock invalid: The power reserve of the calendar clock has been exhausted.
The time is declared as invalid. At the same time the DNV bit is set.
0 ERR
Critical error: A serious error such as a hardware failure or a checksum error
has occurred. If the ERR bit is set then also the DNV bit is set.
Table 136: Profile status Bits
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