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Written on: 30. 04. 2012 [23:24]
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martijn
martijn jansen
Topic creator
registered since: 30.12.2011
Posts: 2
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Hi, I am trying to log modbus data that is processed at 100hz via a LogicLev parameter to a file archive.
- The LogicLev parameter I use is set to calculate at 1e-2 s
- The Value Archive 'Get Data Period' is set to 10ms
- The Value Archivator value period is set at 1e-2 s
- The Value Archive for the parameter has the buffer period set to 1e-2 s
When I view the buffer values in the Value Archive page or in for example a Graphics Group they are correctly displayed with a 100hz resolution but when I use the file system archive the maximum resolution is always 20hz, Even when I increase the period (i.e. 1e-3) the resolution always stays at maximum 20hz (i.e. values at 0ms, 50ms, 100ms, etc) while the buffer values resolution changes correctly.
What could be the reason the file archive system does not work at frequencies higher than 20hz?
I use OpenSCADA 0.7.2 and I would like to thank you for the great software otherwise!
Edit: OpenSCADA reports a realtime clock resolution of 1ns
[This article was edited 2 times, at last 01.05.2012 at 12:10.]
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Written on: 01. 05. 2012 [19:17]
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roman
Roman Savochenko
Moderator Contributor Developer
registered since: 12.12.2007
Posts: 3750
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"martijn" wrote:
What could be the reason the file archive system does not work at frequencies higher than 20hz?
For me all that work fine, for DAQ.SoundCard and 48000Hz.
"martijn" wrote:
I use OpenSCADA 0.7.2 and I would like to thank you for the great software otherwise!
The version do not supported now.
"martijn" wrote:
Edit: OpenSCADA reports a realtime clock resolution of 1ns
Reported but real must not. See to "Task" tab on master page, for last version to lag time for tasks.
Learn, learn and learn better than work, work and work.
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Written on: 01. 05. 2012 [22:19]
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martijn
martijn jansen
Topic creator
registered since: 30.12.2011
Posts: 2
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I upgraded my system to 0.8.0, no change.
What I had not tried was recreating the value archivator. Originally I used the AGLKS model as a basis and modified the "1s" archive for a higher resolution. I created a new archivator and that one is working at the correctly at 100hz. The old 1s archivator with exactly the same settings however still had the problem.
Either way the problem is solved for me now. Thanks for your answer.
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Written on: 02. 05. 2012 [10:10]
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roman
Roman Savochenko
Moderator Contributor Developer
registered since: 12.12.2007
Posts: 3750
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"martijn" wrote:
What I had not tried was recreating the value archivator. Originally I used the AGLKS model as a basis and modified the "1s" archive for a higher resolution.
Sure. Changing archivator period will save early created file-archivator's files and will for that apply on new file create after the file archive size expiring.
Learn, learn and learn better than work, work and work.
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