EtherCAT diagnostics

[Marc25]

Hello, on my ctrlX x3 I'm looking into available data useful for network diagnostics from the etherCAT master app. And I have some questions about the statistics.

1. Where does the CtrlX Core get thoses numbers from? Does the control provide it itself or read it from theframe statistics counters slaves? Because for example in the frame statistic counters, I only see changes in lost frames number when the first slave is down and nothing for the rest of the slaves in the topology. 

2. For the slave statistic counters there's an input parameter apparently, like in some other nodes as well. But what exactly am I supposed to wslave statistics countersrite there in order to get those informations? Same thing if I want to reset the frame statistic counters too fo example.

3. In the fielbus status there's a parameter for the master status indicating a number that sometimesmaster status changes(512, 768, 1672 or something like that). Is there a documentation where i can see what those numbers exactly refer to?

    Also in topology status, the state sometimes go pending for a second when a change occurs but always remain "valid" no matter the changes in the topology or if a slave is down for example. I don't understand it.topology status

However in the "ethercat status" window of the ethercat master app. I can correctly see when something is wrong with the topology. But I plan to get those informations with the REST API. That's why those discrepancies bother me a bit.

I haven't seen anything about it in the ethercat master app documentation. Does anyone knows more about it or redirect me to some helpful documentation ?