Hello Yu-wen Tang.

I had a problem when i tried connect PLC S7-1500 ( CPU 1512C-1PN V2.5 ) with MQTT broker (Azure) . The error code 80C6 and statusId = 2 when I enable LMqtt_Plublisher , i can't fix it , please help me. i attacked my problem's ducument and my project. 

Thanks for your help!

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Split from MQTT Client Application Example for SIMATIC S7-1500.

Hello Yuki

I think you know this FAQ:

https://support.industry.siemens.com/cs/ww/en/view/109748872

But perhaps its a kind of Certificate problem reegarding the Azure Cloud...

I know no other Example but perhaps you will find here  also Information in this FAQ, I know its a WinCC FAQ and the Cloud is also another one (AWS) but perhaps...

https://support.industry.siemens.com/cs/de/en/view/109760955

If It doesnßt help the forget the Post

Bye Murof

Hello,

"80C6" means: Partner is not reachable.

So...please check, if PLC and Broker are in Same Subnet or that the IP addresses are correct. Either proof, if a router ip is configured in PLC, if you have different subnet.