Connect Beckhoff IPC CX2020 with Twincat3

Who knows this error? Please help me.
I try connect beckhoff to twincat3 like belows:
And after I press "Broadcast Search", the screen doesn't show up anything. I need your help, Thank you everyone so much. I also change ip address.
 

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Who knows this error? Please help me.
I try connect beckhoff to twincat3 like belows:
And after I press "Broadcast Search", the screen doesn't show up anything. I need your help, Thank you everyone so much. I also change ip address.
I usually enter the IP, not the hostname, and press the button to the left of the IP. The broadcast search never works for me.
 
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