Techno Trade TBOX MS - 13 Datalogging; Introduction

Version: 1.06 97
13. Datalogging
13.1. Introduction
Datalogging relies on the database inside TB
OX MS. Datalogging allows memorizing
events of your process, in order to visualize its history.
TB
OX MS contains 72 Kbytes of memory for recording events; the latter is what we call the
database of TB
OX MS.
There are two categories of databases:
The Chronologies
Chronologies are 'On event' recordings, by mean of changes in Tags. Each event is
recorded with the time, date, Tag and its status or value (see important note about
timestamp next page).
Example of ‘digital event’:
The changing of status of the Tag represents the events.
Example of ‘analog events’:
The variation of the Tag represents the events.
TB
OX MS stores chronologies in 2 tables: one for digital events and one for analog events.
t
0
1
t
20
40
60
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100
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