Hi list,
I looking for a way to capture data from historian or direct from object
manager in order to analize this information out of line.
The requirementes are:
Time sampling: 1 minute or less.
Data type: plain text
Variables: aprox. 100
Period of data: aprox.
We are using the normal tools that comes with Foxboro I/A DCS:
Config
Historian
Data Display
(choose current data, sample, fileter point name variables)
Reports
ASCII File
But this procedure only save four variables and we need so many variables to
save completed simultaneusly. This procedure fails when we specify more
than four variables and take so many time doing in this way.
In the past we tested a method using the crontab and prelude s.s. on a PW-OE
(PC Venix) but this procedure writes on hard disk frequently (every minute)
and the computer come slow and is dangerous because reduce life of hard disk
. On the other hand today we do not use PW-OE any more.
I would like to know other procedure to reach this purpose.
Thanks in advance.
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