Beckhoff PLC Connection to TwinCAT support

Hi, I'm Vinicius
I've just started working with TwinCAT and Beckhoff PLCs.
My question is about connecting the PLC to the software. This morning I could ping the PLC from my computer and also connect both TwinCAT and the PLC via Ethercat.
At some point of testing the program, the status of the system went to TimeOut and now I can't connect to the PLC anymore, actually I can't even ping the PLC anymore.

Any suggestions? Thank you very much

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Just a slightly correction, I said Ethercat but it is Ethernet.

Solved

Problem solved with a support from Beckhoff.
Thanks.

both systems should be in same ip range 192.186.x.x
but hey solved in 11 hours nice.

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Haha, I don't believe 11 hours is a good range ^^
That was exactly the problem, shooter. Thank you very much for the answer!