Hi, I have problems trying connect to my public MQTT broker with LMQTT library an CP 1243-7, the status code is 80C6 which is "Partner is not reachable" according to the TCON documentation. But my public MQTT broker can be connected from my pc or other devices. So it should not be firewall matter? (MQTT_DB shown in 1.png)

However, I can successfully connect to the MQTT broker in the LAN, so I guess the program and module configuration are correct? (MQTT_DB shown in 2.png) , differentiate the 1.png only in IP address )

The Mobile Wireless Diagnostic of CP 1243-7 is shown in 3.png, which I think it is OK and connects to the Internet successfully.

I really don't know the reason and where the problem is. Can anyone help me or share similar experiences?