Mitsubishi Electric Q26UD(E)HCPU User Manual page 286

(3) Ethernet diagnostics
Using the diagnostics function of the programming tool, the module status, parameter settings, communication
status, and error history of the Built-in Ethernet port QCPU can be checked.
[Diagnostics]
For details on the Ethernet diagnostics, refer to the following.
Operating manual for the programming tool used
The MELSOFT connection where User Datagram Protocol (UDP) is used is regarded as one connection in "Status of Each
Connection".
Therefore, even if multiple connections are used, the diagnostics result is displayed as one connection.
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[Ethernet Diagnostics]