Hello everyone,

I'm trying connect my S7-1200 (fw 4.2) to CloudMqtt.com. I can connect this cloud, but I cannot publish data. When I publish data, I receive the notice error : "Receive CONNACK error code from the broker"

Anyone can explain what is this error ? and how to fix it ?

I use example "MQTTclient_S7-1200" from Mr. Yu-wen Tang

Hello kingsman,

I do not know the block you use. But do you try the "official" block from Siemens?

https://support.industry.siemens.com/cs/de/de/view/109748872

It would be interesting, if it works with this.

 Hi @Pittiplatsch,

I tried the offcial block from Siemens and it worked, but I don't know why is the Project of Mr. Yu-wen Teng not work. How can I subscribe the topic from broker ?

Regard. 

Pittiplatsch

Hello kingsman,

I do not know the block you use. But do you try the "official" block from Siemens?

https://support.industry.siemens.com/cs/de/de/view/109748872

It would be interesting, if it works with this.