I have s7-200 smart plc. this is first time I am using it. I have one problem with that. whenever I download the program to plc and disconnect plc from pc(ethernet wire), it goes to stop mode from the run mode. then I have to again upload programme to run plc. this also happens whenever I disconnect plc from the power supply. I can please what is a possible solution to this problem. (CPU ST20, standard type CPU module 12DI/8DO) 

AutoGen_3735795

I have s7-200 smart plc. this is first time I am using it. I have one problem with that. whenever I download the program to plc and disconnect plc from pc(ethernet wire), it goes to stop mode from the run mode. then I have to again upload programme to run plc. this also happens whenever I disconnect plc from the power supply. I can please what is a possible solution to this problem. (CPU ST20, standard type CPU module 12DI/8DO) 

Hello AutoGen_3735796,

please be so kind and don't post twice or more for the same problem.

You also post here (3rd reply):

https://support.industry.siemens.com/tf/de/en/posts/s7-200-software/79399/?page=0&pageSize=10