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6-5
If the historical record was recorded after powering up or the log was reset, the record does not
contain information covering a full interval and the most significant bit of the second’s byte will be
set. If the historical record was recorded after time was adjusted, the record might contain more or
less than a full interval’s worth of data. If time is advanced within the current interval, or advanced
or rolled back to outside the current interval, the record contains leass than a full interval’s worth of
data and the most significant bit of the minute byte will be set. If time is rolled back within the
same interval, the record contains more than a full interval’s worth of data and the bit before the
most significant bit (bit 6) of the minute byte will be set.
Q
If the Historical Log 2 Time of Use Enable byte (45952) is disabled, the remaining bytes are the
values requested by the Historical Log 2 Data Pointers (45333-45460). If the first Data Pointer is
requesting V
BN
a 4 byte value, then the next 4 bytes in the Record are V
BN
. This continues, Data
Pointer for Data Pointer, until all Data Pointers have been satisfied, or the number of bytes is equal
to the Historical Log 2 Record Size.
6.4:
Limit
Trigger
Log
Format
Profile Information is in the Programmable Settings Block.
Q
The Limit Trigger Log records an entry every time limit values monitored by the EPM meter change
their state. The log records information about the limits—for example, which limits are currently
exceeded, which limits have just changed—and records a snapshot of values as specified by the
Historical Profile for Log 1.
Q
Record Format: A Record contains 32 bytes.
• The first eight bytes in each record is the Time Stamp. The format of the Time Stamp is:
Byte Format Range Description
0 binary 0 – 99 century
1 binary 0 – 99 year
2 binary 1 – 12 month
3 binary 1 – 31 day
4 binary 0 – 23 hour
5 binary 0 – 59 minute
6 binary 0 – 59 second
7 binary 0 – 99 + MSB centisecond
Note: This log does not record records during Test Mode.
An additional piece of information is contained in the centisecond byte. The most significant bit
indicates whether this SOE record is contiguous in monitoring with the previous record. If the bit is
1, then this is the first record recorded after a power-down, reset or download and all unfinished
durations prior to this record are lost. If the bit is zero, then monitoring was continuous between the
last record and this one.
• The next four bytes are a bitmap for the current state of the Value 1 Comparisons of the Limits.
The first bit (the most significant bit of the first byte) is the current state of the 1
st
Limit's Value
1 Comparison. The last bit (the least significant bit of the fourth byte) is the current state of the