Citect FileFormat

Hi everone.


I wonder if someone knows how citect HST fileformat is upbuilded?
It would be very grejt.

Its kind of a binary fileformat contains of logged data, and im now doing a program for my own purpose, that tries to read my own data from the loggers that i have.

Thanks.

Do you want to read them purely to see the logged data for your own testing\checking, if so there are several applications on the Citect Website (you need a valid Citect agreement to download them) that enable you to open the files to view the data.

If you want to read data from the files for use in another applications you really should be logging to DBF or SQL or even Citect Reports which willl give you an Excel output from the trend files.

No i just want to see how they was stored in the fileformat, thats all, an then use own application for reading that FileFormat.
I guess i will have to go directly to Citect. There fileformat seems not to be open state for all. So i will proberly have to get some license for doing this, i think.


Thanks.

OK, then this below may be of interest to you, and just looking on the Citect support website under the Toolbox section there is a few custom functions to automate this process so it is possible to do without much trouble.

Trend data into dBase Format



Article number: Q1076
Created on: 11/1/94
For Citect versions: 1.00 1.01 1.10 1.11 2.00 2.01

[size=+]Summary[/size]
How do I get trend information into dBase Format.

[size=+]Solution[/size]
Citect does not write trending information directly in the dBase format, as this would not provide the required performance in logging or displaying the history data. To get trending data into dBASE format, you should get Citect to create the normal trending files. Define a dBase device in the Device form with the fields {TIME} {DATA}. Then extract the data you require from the trend files using the function TrnGetTable() and write into a dBase Device using the DevAppend() function.

Once the trend data is in dBase format, the trending data can be used in databases, spreadsheet and any other program that supports the dBase format.