Accessing UDT tag attributes in from a template

[nminchin]

Just FYI, it sounds like you've got an analogue display template of some form that has a UDTType parameter. In general, I wouldn't recommend using UDTType parameters. They have their benefits, but potentially significant consequences. I have experienced two major downfalls:

• they can kill client performance. under a certain number (10-15?) of template instances are unnoticeable, but when you get more than a certain number, the Window load time is significant.
• they restrict a template to a specific UDT. Sometimes this is ok, but if in the future a new, similar UDT needs to be created that should use the same template, you're out of luck; you have to create a new template as well.

Template using UDT param: Can you access UDT tag metadata?

Having more experience in using Ignition now, it’s worth noting that using UDT parameters within template symbols is not recommended. It’s much more efficient and scalable to bind the path to the UDT instance instead, and then concatenate the relative path to the tag onto that. Using a UDT parameter has two major down sides: all tags within the UDT are subscribed to, meaning higher load and potentially slower client and server performance, especially if a number of the template instances are …