Issues with the system.tag.storeTagHistory() in 8.3

[k.jin]

Hi everyone,

I’ve recently migrated projects running on 8.1 to 8.3 and noticed that there has been a few breaking changes and I’m stuck on this particular fault message. In essence, I’m running value changed script on a tag that uses system.tag.storeTagHistory() in the following manner:

def valueChanged(tag, tagPath, previousValue, currentValue, initialChange, missedEvents):

historyProvider = ‘name_of_the_historian’

tagProvider = ‘name_of_the_provider’

paths = [tagPath]

values = [currentValue.value]

system.tag.storeTagHistory(historyProvider, tagProvider, paths, values)

Whenever this script is triggered, I see a warning with the message: SF Engine 'name_of_the_historian' does not accept data 'DefaultPersistentFlavor{signature='history_set', systemType=Tag History}' and also no data is inserted into the database.

Does anyone know what causes this message to appear? Didn’t have this problem with 8.1 but it started happening when I migrated to 8.3

Many thanks in advance.

[k.jin]

I just saw in the document that system.tag.storeTagHistory() has been removed and replaced with system.historian.storeDataPoints()

I tried using the new system.historian.storeDataPoints() but it keeps spitting out a message

Bad_Failure(“Failed to normalize all data points”)

has anyone one seen this fault before?

paths = [‘histprov:historyDB:/sys:sys_name:/prov:provider_name:/tag:test_a’]

values = [1]

timestamps = [system.date.now()]

system.historian.storeDataPoints(paths, values, timestamps)

I tried following the example syntax#2 in the documentation but it doesn’t seem to want to work

[k.jin]

system.historian.storeDataPoints | Ignition User Manual

It looks like the syntax#1 example from the documentation is working but syntax#2 is still failing with the message Bad_Failure(“Failed to normalize all data points”)

Has anyone tested the syntax#2 and managed to get it working? It’d be good if i can use the function without having to import the modules.

[k.jin]

to anyone who wants to use syntax#2, I changed the path format and it worked:
paths = ["histprov:MSSQL:/drv:ignition-gateway:default:/tag:Tag2"]
values = [10]
timestamps = [system.date.now()]

[qpadgham]

Could you share exactly what the script looked like when you had issues? I tried the syntax as it was originally and it worked for me, see attached picture. Note my gateway name and historian names are used in the function

[k.jin]

Thank you for answering the question @qpadgham , I think I might have misspelled something in the paths, following your instruction, i was able to make it work:

Quick question about retrieving the data, is it possible to view the data using Tag History binding? I am unable to retrieve any data that I inserted (tried both wide and tall):

[qpadgham]

Yes, it seems to work as I’d expect. I have the same script as before (names have slightly changed for the system and historian), and I have a Table component with the following binding on the data prop:

As I repeatedly run my script, new values appear in the table as I’d expect:

If you’re continuing to see issues feel free to submit a support ticket and we can take a look.

[k.jin]

thanks a lot @qpadgham

i tried creating another historian and re directed storeDataPoints() to it and things started working.. weird but at least it’s working now.