Increase the update rate of data in PI Vision displays
As a PI Vision user I would like to be able to increase the update rate of PI Vision displays to less than 5 seconds and even sub-seconds so I can use it for trending.
The ability to increase the update rate is currently in development for the PI Vision 2020 release.
This parameter setting will support integer values representing the update rate in seconds.
Danny Dijke commented
@Amit, what is the expected release for PI Vision 2020?
Aleix Mila commented
By now, the data rate from the PI Data Archive is dependant in the Update Manager, and this has a fixed value of 5 seconds that cannot be modified.
Will it be also modifiable? Otherwise, in a trend you'll see a plain value during 4 seconds until it refreshes with the real values on the 5th second, I am right?
Georges Khairallah commented
A use-case from a customer:
"Insulation manufacturers produce insulation materials in a short period of time. In fact, production duration can be between 15 minutes and 45 minutes using polyisocyanurate and other chemical products where after mixing, the chemical reactions in seconds can impact the quality of the products.
In order to minimize losses, those on-site are using the PI System for monitoring and controlling every step of the production. This kind of production is lineal."
In this particular scenario, there is no HMI between the control system and PI, so really, PI is the "eyes".
Kenneth Barber commented
PI can't even store events with sub-second timestamps by my understanding, so I don't see the point in sub-second refresh rates. The "less than 5 seconds" part of the suggestion is still good.