Vaisala WMS302 Podręcznik Użytkownika Pobierz pdf (Strona 140)

User's Guide ______________________________________________________________________

138 __________________________________________________________________M210630EN-B

setup is created. The approximate maximum logging period for a setup

where 10 measured values are logged is shown in Table 17 on page 138.

Log files are automatically deleted after a given period, so that there is

always a certain amount of logged data saved in the Flash memory. The

period is adjustable in the setup and can vary from 0 (= at midnight, the

previous day's file will be deleted to free up memory) to never delete

(=log memory will be filled up completely). To ensure some data

backup, for example, a value of 4 days is feasible. If the delete interval

is set negative with MAWS Lizard Setup Software, the old log files will

not be deleted automatically.

Log Data Format

A log entry is generated at the time defined in the setup file. When

entries are retrieved with the logshow command, the produced output

includes two parts: the header and the log entry information.

In Figure 121 on page 139, the example of a log query shows 10 entries

of logged items 1 and 2 starting at 6 AM on December 9, 2003.

Table 17 Log Memory Capacity

Logging Interval Maximum Logging Period

1 second 5 hours

10 seconds over 2 days

1 minute 2 weeks

10 minutes over 4 months

1 hour Almost 2 years

1 2 ... 135 136 137 138 139 140 141 142 143 144 145 ... 261 262

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Vaisala WMS302 Podręcznik Użytkownika Strona 140