Well few things to see:

-Since you are using FB's, make sure that your Instance DB's are updated – right click on you Blocks folder and 'Check block consistency...' . Here you don't want to see red dots.

-Another check, make sure that updated Instance DB was also downloaded.

-The Diagnostic Buffer is a great resource also to point what fault you are having.

dear sirs

i have same problem.

i have PLC cpu414-5h pn/dp .i connected with PLC the error in diagnostic buffer is " 

Area length error when writing

how i can solve the problem?

i am waiting for your response with best regards.

Siemens-man

 "

dear sirs

i have same problem?

Siemens man 

Siemens-man

dear sirs

i have same problem?

Siemens man 

 Hello Siemens man.

Mister hdhosseini already told you how to proceed, go to Diagnostics buffer, select the line where the error is and click "Open Block" and it will take you to the piece of code where the error is. As mentioned before, area length error when writing means that your code is trying to write a non existing address. 

You almost got this error.

regards.

Pekka_H

Thank you for this. It's good to know this, even thought it doesn't help me a lot in my current problem. For some reason the Open block button only opens the function block at the top. It doesn't show the line which caused the program to stop.

It's the same thing if I stop CPU manually. I never see the line in the function block. I can only see the line in OB1 and the name on the FB it was executing. Is this as it should be or am I missing something?

 Im facing this issue in Step 7

 Hello Map@1998,

Map@1998

 Im facing this issue in Step 7

you may delete OB121 and then get information in which FB/FC the area length error is triggered.

Regards,

Frink