Overriding a parameter of a nested child UDT

Ignition
1

Hello all,

Is it possible to override the parameters of a child UDT by script.

Here is my simplified structure :
1 Parent UDT
1 Child UDT
The parent contains a child. The child is the “bearer” of the parameter to modify.

PARENT_UDT
|
------ CHILD_UDT (Parameter)

With system.tag.editTag, i can change parameters of the parent and override the properties of the child, but what I would like to do is overriding the parameters of the child.
This is doable in the Designer but I can figure how to do this by script.

Also, I do not wish to link my child parameters to a parent parameter.

Tried:

  • system.tag.editTag(tagPath = “Parent/Child”, parameters = {“ChildParameter”:“Test”})
  • system.tag.editTag(tagPath = “Parent”, overrides = {“Child”:{“ChildParameter”:“Test”}})

Regards.

1 Like
2

system.tag.browseConfiguration and system.tag.configure.

Part of that is in 7.9.4, I believe it will be fully functional in 7.9.5.

3

Hello Kyle,

Have you more information about this system.tag.configure method you’re mentionning ? Can’t find it anywhere.

4

Hello friends, have you been able to solve this? I’m trying to solve this but it gives me a lot of errors … If I use the TagPath of the UDT to change a parameter of a UDT-type child, it adds a new parameter to the parent, and if I overwrite it as if the UDT child outside a tag tells me what type of data does not have that property.

6

I’m not sure if this helps, and I’m not even sure where child UDT parameters are, but for overriding values/properties on a child UDT, I’ve found a bug with the Ignition code, so maybe this will help someone (I’m on 7.9.4)

To override a property on a child UDT you’re supposed to do this according to the docs

system.tag.editTag(
    tagPath="[default]path\to\parent"
    , overrides={'child': {'Enabled':False}} )

but that doesn’t work for me. I have to include the child UDT in the tagPath and then where the child tag path is supposed to go I can literally put anything

system.tag.editTag(
    tagPath="[default]path\to\parent\child
    , overrides={'ANYTHINGHERE': {'Enabled':False}}
)

So that’s some sort of bug, but if I do it the second way, at least it works. I’ve commented the weirdness so if it gets fixed and this stops working one day hopefully it’ll be easier to find

7

Hello
Chasondeshotel, this did not work for me, since my property is a custom property of the child data type. I receive the following error:

com.inductiveautomation.ignition.client.gateway_interface.GatewayException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Tag property ‘Estado’ is invalid or value is an incorrect data type

8

Can you post a screenshot of where these parameters are?

I’m not sure I’m qualified to help, but I’ll try. I’m more curious where these child parameters are, I can’t seem to find what you’re talking about

edit: I guess I don’t understand nested UDTs. I use UDTs extensively, and all of those UDTs have nested tags but not nested UDTs