Hi,

 thank you all for the suggestions..

In between i found this FAQ ..

Multi-Zone Control with "PID_Temp” for SIMATIC S7-1200/S7-1500

Hi, 

I read this forum. 

I have a same problem. 

As you, I want to control the temperature of 11 zone. I use the functions that Siemens used for multi zone temperature control but when I simulate in, the functions set the mode of PID temp to pretuning but it doesn't set actually and so the program is put in an unlimited loop and because of that we have an error for cycle time . do you know why it's happened. 

I even simulate the Siemens example project for multi zone and it has the same problem. 

thanks for your attention . 

Best regards.