hallo all

firstly i am sory because my english

i need your help

i have a system composed of cpu 6ES5928B and many inputs and outputs units ... the program stored in eeprom except the data blocks on ram .... during the normal operation the machine stoped and stop led flashing .... the datablocks ereased i dont know why ? ... i re - downloaded the datablocks again ... and when i go to run the cpu as i did that before ... the green ( run ) led flashed and the red ( stop ) flashing slowly again ..... datablocks lost .... i repeated this many times ... and the result is same ...... i ask your advice

thanks

Hello,

you have the same question at 2 times, that is not so good, becausel nobody knows where you look for a answer.

In my opinion have you a problem with your CPU-RAM.
If you have a spare part please change the CPU and check it again.

regards
CaOd

Closed cause question posted twice. 

The second thread with the subject CPU 6ES5928B, during the normal operation the machine stoped and stop led flashing is published within the conference SIMATIC S5 / STEP 5. 

Best regards
Min_Moderator