How to use ModArcPostgreSql?

[kcks66]

Hi Mikhail,

I installed v6 in a different PC this round and tried to use PostgreSql as my main achieve again.

However I am facing error in this PC, error log as below:

https://ibb.co/cXJh9yS

FYI, this PC is administrator password protected.
Pls advice and thank you.

[kcks66]

Hi Mikhail,

My mistake; I thought Rapid SCADA will automatically create the rapid_scada database in PostgreSQL.

I manually create the rapid_scada database and everything works as expected.

[Mikhail]

Hi,
Yes, the rapid_scada database should be created manually.
Thank you for the update.

[Mikhail]

Hi,
Try the new module ModDiffCalculator. The configuration example is included in the archive. The module is compatible with Rapid SCADA 6.2.x. In case of questions, create a new topic.

[kcks66]

Hi Mikhail,

I want to ask what is the function of Pull to period as below:

https://ibb.co/nN27xFmV

I want to ask what is the function of Use in-memory cache with cache size ratio as below:

https://ibb.co/ZRFyw8M3

Thank you.

[Mikhail]

Hi,
> what is the function of Pull to period
For example, you set it to 10 seconds. If a timestamp of the point is 10:59:51, it will be changed to 11:00:00.

> what is the function of Use in-memory cache
Caching will be useful when data from multiple devices arrive at the same time stamp. This usually happens when a new hour begins. In this case, the channel values ​​for this time stamp, which are necessary for calculations using formulas, will be read from the DB only once. If the project has many thousands of channels with formulas, the difference in data processing speed will be significant.

A driver should support reading archives from your devices.

[kcks66]

Hi Mikhail,

Thanks for your explanations.

[Author]

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