Hello to all programators , so i have a problem (mistery one) as show in the pictures below . My network  has somewhere 40 inverters via profinet, 3 encoders also via profinet , 3 hmi panels (one tp1200 and athers 2 tp700 , 7 station IM131-3PN(et200s , all same model and version), and another network with 3 robots via profibus. 

So from begining i had problem with 4 from 3 station , same thing ( seted name , ip adress ,verified al ok , diagnostic sayed module configured but not avaible ) . Checked hw configuration , compiled , downloaded , netpro save compile downloaded, same thing. Changed with place 2 station reconfigurated , downloaded ,same error  (bus fault blinking red 2hz , pm module red and green led on). After this i used primarytool to reset Et200s directy conected to pc, out from cpu network and with surprise 3 from 4 sistemated . Last one its giving me the same after couples of tries .

So below its all i made :

1) taked out all modules from station , reconfigured hw , compiled netpro , downloaded both , same thing 

2) another try , after reseting took out alimentation from plc and station , left for more then 30 min to clear tension , redownloaded all , same thing 

3) used sinetplan to determine signal stengh , all its ok 

4) the position off station its in the midle off network , and after there're anothers ones that are working

5) as i have a scalance in configuration colegated directly the station , same thing 

6) changed ip , name , asigned , reconfigurated , downloaded , same thing 

7 ) tooked another station from same network , inserted in that position , same thing

8) i can ping station  

9) entered online in cpu , deleted sdb , redownloaded hw , same thing 

10) checked all conectors , only profinet cable (green one with conectors) used 

Really remained witout options , inserted also a fast swich in the midle of network ,same thing . Thanks for any sugestion and help ,apreciate it.

Closed cause question published twice.

The second thread with the subject Problem conection cpu 317 with one of 7 et200s via profinet is located within the conference Communication / Networks.

Best regards
Min_Moderator