12-11-2021 11:47 AM - edited 12-11-2021 11:50 AM
I am working on a project that involves a decent number of double and boolean shared variables. The alarms and data need to be logged. By setting the resolution of double SVs, I have manged to control the amount of data logged. However, I am not yet able to handle the issue of boolean data types. (These indicate ON/OFF state of various components). I just want to log data points on value change. As I am new to DSC 2017 any suggestion would be helpful
Another small question the scf file format used in earlier DSC versions. Is it also available with DSC 2017?
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12-11-2021 08:13 PM
12-13-2021 03:37 AM
Scf files are not supported any more but there is a migration tool (under Tools->DSC), although I never used it.
The documentation I read says nothing about how logging is optimized (if ever) for a boolean value.
My guess is that logging occurs only when values change. A small test project may give you an answer quickly.
If there is no optimization, you may consider using numeric variables instead of booleans.
12-16-2021 09:48 AM
Thanks for the reply
I converted boolean SVs to Integer but no improvement. The library has 2600 SVs, I even disabled logging of Alarms but still the problem persists. As the application runs for an hour then database size is around 1.5GB..really stuck at the moment 🤔
12-21-2021 10:36 AM
By disabling the generate event on value change property on the ALARMING page I have managed to address the database size problem, the alarms are logged and retrieved fairly efficiently; so a big step forward. However, despite logging being enabled I am unable to see any data in Citadel.
Are there any special setting for logging data for boolean shared variables.
12-22-2021 09:25 AM
SOLVED: the logging option was unchecked for most SVs.
By disabling the generate event on value change property on the ALARMING page the database size remains manageable.