Biocontrol HHR 3000 PRO, Руководство программиста

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Appendix C : Log
Log is a 2 nd table which user can use to save information in database about events,
or make space-saving records which contain small amount of information.
Log is freely definable similarly to Table it takes 7 parameters, the way to define
column in Log is analogical to defining columns in Table, refer to Table Section
chapter.
The idea of log has been found to help you operate on information about
events(user-defined) concerning one specified column in TABLE section (ex.
Transponder number). In the other words you are able to see one record from
TABLE and appropriate record from LOG, there is a possibility to display next or
previous records from LOG concerning selected record in TABLE. If you are
familiar with database technique Table and Log are related by 1 to ∞.
Creating relation between columns in Table and Log is managed by Join function
described in Function Assembly.
HHR enables you to display all the data from Log according to relation(Join
function), you can manage displaying process by Sorting function, the function is
described in Function Assembly.
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The syntax of any line in LOG section.
<col_name max 12ch>;<col_type 1ch>;<unique 1ch>;<edit 1ch>;
<null 1ch>;<col_mask max 25ch>;<default_val max 25ch>;
It is important to make default value match declared mask .