Hi guys, It is great to receive news from you. I have just tested the setup a different way again and it works. I connect to the ctrlX through XF10 (192.168.1.133) for engineering and connect the ctrlX with S7 through XF51 (192.168.2.144), without any router or switch in between. I believe my Office Switch has some protocols that limit the connection since it is also a Wi-Fi router. One main thing is that I must set up different IP layers for the XF10 (192.168.1.133) and XF51 (192.168.2.144). I configure them as 192.168.2.XXX before, so there must be some conflicts. However, it is strange since my colleague uses the same setup with the same model of the switch, and it works while the 2 devices are connected to it. I will check again whether which settings on the switch I should change or modify. Thank you so much for your time and support. Best regards, Thinh
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