Hello deividasn,

Thanks for your detailed message. Based on the setup you've described, the issue likely stems from the IP addressing and routing configuration. Here’s what might be happening and how you can address it:

Summary of the Issue:

• Your Beckhoff IPC has two interfaces:

  • Ethernet: 192.172.1.30 (HMI server)

  • Wi-Fi (virtual AP): 192.168.137.1

• Your tablet connects to the Wi-Fi (192.168.137.x subnet) but is trying to reach a server on 192.172.1.30 (a different subnet), which it can't route to directly.

Recommendations:

1. Enable Routing or Bridging on the IPC:

   • Ensure the IPC routes traffic between the 192.168.137.x and 192.172.1.x networks.

   • This may involve enabling IP forwarding in Windows (via Registry or PowerShell) and possibly setting up static routes.

2. Alternative – Host HMI on WLAN Interface:

   • Configure the HMI server to also listen on the 192.168.137.1 address.

   • Then access it via https://192.168.137.1:2020 from the tablet.

3. Check Firewall Settings:

   • Ensure that Windows Firewall (or other firewalls on the IPC) allows inbound connections on port 2020 for both network interfaces.

4. Validate IP Address Access:

   • From the tablet, try pinging both 192.168.137.1 and 192.172.1.30.

   • If 192.172.1.30 isn’t reachable, routing is the issue.

Let me know if you'd like detailed steps for setting up routing or configuring the HMI server to listen on multiple interfaces.

Warm regards