User's Manual

Operation: C1SD, C1ST, and C1SL Versions
CENTRON Meter Technical Reference Guide 5-19
The maximum number of pulses is 4095; therefore, the smallest pulse weight (PW)
that can be used is:
Data Storage
The Load Profile register stores data in mass memory at the end of each interval.
This data stored is the pulse data for that interval. This process continues for each
interval until sixty intervals have been recorded. The mass memory is grouped into
segments of sixty intervals defined as a record or block. In addition to the profile
data, each record contains the following information:
Recording Duration
Use the following equation to determine the recording duration for the load profile
register:
M= Memory size in kilobytes
I = Interval Length in minutes
PW Min,
12 000Wh,
4095P
-----------------------------
2.94Wh
Pulse
---------------------
==
Time Tag Specifies the month, day, and hour of the end of the data
record (or block).
Power Outage Status bit is set for each interval during which a power
outage occurs (interval status).
Status Bits There are four types of status bits written into each data
block:
Time Adjust Status bit set along with power outage bit when time is
adjusted with Load Profile running.
Saturation Status bit is set when the pulse count for any interval in
the block exceeds 4,095 pulses.
RAM Error Status bit is set if any memory address within the record
fails the memory check (block status).
Field Test Status bit is set if Test mode is activated during an interval.
Register Readings A register reading is maintained in the data record to be
used for data validation. This register reading is updated
at the end of each interval.
Duration (days)
M 1024×
107
------------------------
I
24
------
×=
Truncate all decimals before multiplying by I/24.