Elgas DATCOM, Operating Instructions Manual

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11
Function Description
160
Gas compressibility factor - mean value yes yes yes
Minimum/maximum conversion, gas
compressibility factor
yes yes yes 2)
Binary quantities
Binary input - state yes yes
Binary output - state yes yes
Setpoints - state yes yes
Device and transducer communication errors -
state
yes yes
Binary internal yes yes
Other quantities
Counter/ timer - absolute yes
Device status yes yes yes
Notes:
1) The day or hour is stored together with the value (or in combination, where suitable)
2) The date and time of reaching the minimum/maximum is stored together with the value
Table 30 Quantities archiving options
11.3.1 Monthly Archive
The values are recorded in the archive once a month at the set "gas" hour (usually 6:00 am). The
record time is stored in the archive along with the values. When the archive is filled, the new data
starts to overwrite the oldest. There is an option to store statistical values for gas consumption
and analogue quantities (see Table 30).
Therefore, a record dated 01.06. means statistical values of quantities in the interval 1.05. 6:00 to
1.06. 6:00.
11.3.2 Daily Archive
The features are similar to the monthly archive (for the list of options see Table 30). Also in this
archive, the statistical values of gas consumption and analogue quantities can be stored. The
values are recorded in the archive once a day at the scheduled "gas" hour (usually 6:00 am).
Therefore, a record dated 13.06. means statistical values of quantities in the interval 1.05. 6:00 to
1.06. 6:00.
11.3.3 Data Archive
Archiving period: adjustable from 1s to 1h
In this archive, the quantities are stored in the defined period, which can be set by the user. The
default value is 1 h. For status variables, the occurrence of the active state in the archive period is
stored in the archive. For binary inputs, the active status can be set according to the actual
parameter setting. Log1 is the active status for setpoints and errors.