How do I ping with another computer and when it disconnects I know of?
Hello Hector Manuel Padilla,
to verify the TCP/IP connection you can use diffrent options:
1. Verify the connection via "ping IP-address" in ssh-session (Terminal), manually.
2. If you are using the PN-Controller an PN-Protocol, you can use the System-Variable "PND_S1_VALID_DATA_CYCLE" (PROFINET® controller has established the connection). Please find details in PLCnext InfoCenter: [System variables - PROFINET (plcnext.help)](https://www.plcnext.help/te/Programming/IEC_61131-3/System_variables/System_variables_PROFINET.htm?rhhlterm=PND_S1_PLC_RUN&rhsearch=PND_S1_PLC_RUN)
3. You can Implement your own "Keep-Alive"-Program and send the TCP-IP-Telegramm in user defined intervalls.
4. It is also possible to use the "PLCnextBase" to execute the command in Linux-Shell : [PLCnext Store | PLCnextBase](https://www.plcnextstore.com/eu/app/1844)
I hope, I could help you, if not please let me know.
BR Eduard
Thanks Eduard