I'm trying to make sense of some of the tool change signals: What is "TLM Tool Change" and how is it different from "Tool Change"

I'm looking for one that is triggered when a tool needs to be changed (for getting the attention of an operator).  I think if one of these works while a tool change is in process that would also be OK

I thought I saw a list of these signals with what they were triggered by somewhere.  Does anyone know?

The output that just says "Tool Change" will turn an output on when the tool change M6 macro is called.
I assume the TLM is Tool Life Management, but you know what they say about assuming.
I have used this Tool Change output in the past to turn on a yellow light during a tool change.
I now also just use an output number to turn on a light and make a buzzer sound to get an operators attention when a tool needs to be changed.
I just put that code inside the m6 macro to turn on the buzzer.

Perfect. So the output is on the entire time that the M6 is running and turns off when it concludes?

If so, that is exactly what i wanted it to be.

As far as I know. That’s how it has worked for me in the past.  I don’t use it much anymore.