Elgas DATCOM, Operating Instructions Manual

Page: 163 / 228

11
Function Description
161
11.3.4 Binary Archive
The archive stores the states of binary inputs together with status bits calculated and stored in the
system, and the errors of each device. The values can only be stored in this archive if the status
of any stored binary is changed. The record includes a time with a resolution of seconds.
11.3.5 Limit Archive
For the archived quantities, limit (minimum or maximum) reaching is stored. A value and a time
are stored. When this archive is initialized, the current measured values of the specific quantities
are set in both maximums and minimums registers.
11.3.6 Status Archive
The archive stores the date and time of an event change, the status word (64 bits) describing the
statuses of all the monitored events in the device and the state of the primary volume counter
Vm1 and the volume counter Vb1 at base conditions. The list of monitored events in the device is
listed in
Table 14
and in Table 15.
The content of the archive cannot be displayed directly, but it has to be viewed via the service PC
software.
11.3.7 Settings Archive
The settings archive stores the parameter changes, especially if they affect the metrological
properties of the device, except for changes in gas composition and the standard for gas
compressibility calculation. The ID of the person who made the change is stored in the archive, as
well. The record contains the time, person ID, activity description, and new and old parameter
values that have been set.
This archive is different from the other archives, as it is not rewritable, i.e. when filled, no records
can be stored, and further modification of the parameters is impossible. This archive cannot be
displayed directly, the contents can only be viewed on a PC.
11.3.8 Billing Archive
The device contains a billing archive. This archive is used to record data of the billing period set in
the device parameters. The records can be made in the archive in the following ways: first, as
one-off record and according to a preset time or periodically at intervals of 1,2,3,4,6 and 12
months. At this time, all current readings of the primary volume and the recalculated volume of
both the total counter and the counters of the individual tariff bands are recorded.
The device allows for setting the billing period and the time when the next billing period is due.
11.3.9 Gas Composition Archive
Changes in the gas composition or in the standard for the gas compressibility calculation are
recorded in this archive. A time stamp, information on the compressibility used and the size of gas
composition items are stored. When the archive is filled, the new data starts to overwrite the
oldest.
11.4 Device Parametrization
11.4.1 SW Parameterization Using the Service SW