albzen - 2024-03-29

Hello everybody,
I'm working on a RunTime Plc (Codesys 3.5.16/18.20) connected to an EtherCat bus
with many devices.
The bus has some communication fault but I don't know how understand which is the
device or the cable that has the trouble.
To understand the cause of the problem I would like to read the WKC (Working counter) of
the devices (0x0300...0x030C), how is explained in EtherCat documents, but it seems that the read of
the counter is disabled.
Attached there is an extract of the Ethercat document.
Can anyone give me some advice about how and with function can I read it.

Thank you in advance!