Find UDT instance name from full tagPath

[nader.chinichian]

Hi
I want to find the UDT instance name from the full tag path(include Atomic member)
For example if I have PUMP UDT Class with following member:

• run
• Motor1/FLT
• Motor2/FLT
  and instance of Pump01 from it and put in Area1 folder. Now if I have Area1/Pump01/Motor1/FLT how can I find the UDT instance name from it which is Area1/Pump01.
  Note: I don’t any clue how UDT structure when I receive the full tag Path: ‘Area1/Pump01/Motor1/FLT’, so like this example I may have some nested level of folder inside of my UDT.

[MMaynard]

Been covered in

Retrieving the UDT tag path from instance tag path

I’m assuming you are in Ignition v7.9.x, but you might be able to do something like this: tagPath = "[default]Path/To/Tag/Line 2/Filler.typeId" typeId = system.tag.read(tagPath).value print typeId I don’t have 7.9 on-hand to test that out, but I am curious as to the solution. I found that in Ignition 8.0, this seemed to work: tags = system.tag.getConfiguration(tagPath) for tag in tags: tagType = tag['tagType'] if str(tagType) == 'UdtInstance': typeId = str(tag['typeId']) print typeI…

[nader.chinichian]

Hi
I want to get the instance name not typeId.
For example I have UDT called PUMP, and I create an instance called P01.
So if I have P01/Motor1/FLT how can I get the P01.
I can’t use split("/") to extract first part because the instance may be place in folder structure.

[nminchin]

You can't use your solution here?

Grab the UDT instance name and parent folder name

I find some solution by using {InstanceName} and {TagName} pre-define parameters. {PathToParentFolder} is return folder path with \ as seperator which i need dot . instead Does anyone know a solution to replace \ with . for {PathToParentFolder}? Thanks.

Otherwise, I think you'll have to use a script, as @mmaynard said.

tags = system.tag.getConfiguration(tagPath)
for tag in tags:
  tagType = tag['tagType']
  if str(tagType) == 'UdtInstance':
    imstanceName = str(tag['name'])

[nader.chinichian]

@nminchin

tags = system.tag.getConfiguration(tagPath) for tag in tags: tagType = tag['tagType'] if str(tagType) == 'UdtInstance': imstanceName = str(tag['name'])

For my case because I have always reach Atomic Tag non of the solution work for me. I think of every dirty solution and it works me now. As you see in code below I'm trying to reach some Parameters of my Parent UDT which is called 'HMI'.

		UDT = tagPath
		HMI = ''
		
		while True:
			p = UDT.rfind('/')
			if p == -1:
				break
			UDT = UDT[0:p]
			if system.tag.exists(UDT+'/Parameters.HMI'):
				HMI = system.tag.read(UDT+'/Parameters.HMI').value
				break

[MMaynard]

In the linked script just change up the return to bring back the tag name instead of the type.

# we found the UDT definition tag path, return it
     #sRet = tagConfig.get(prop)
     sRet=tagName
     return sRet

[nader.chinichian]

Hi
Can you explain it a little more or show the code?