There are no parameter and local variable names available (DB)

Hi Every body

I had a problem with DB in my program, this is error "There are no parameter and local variable names available because there is a time-stamp conflict between block interface of the blocks and the description of parameter and variable name".

So when i download change the FC (FC in FC), the Sub FC canot run (the Input value of FC are the DB values).

Then we must download the original FC again to CPU and they are running normal. 

I dont understand why it happen like that.

Thanks! 

trinhvankieu

Hi Every body

I had a problem with DB in my program, this is error "There are no parameter and local variable names available because there is a time-stamp conflict between block interface of the blocks and the description of parameter and variable name".

So when i download change the FC (FC in FC), the Sub FC canot run (the Input value of FC are the DB values).

Then we must download the original FC again to CPU and they are running normal. 

I dont understand why it happen like that.

Thanks! 

Hello,

 Have you checked a block comparison Online/Offline? Go to Option --> Compare blocks

 http://support.automation.siemens.com/WW/view/en/770453

  http://support.automation.siemens.com/WW/view/en/17376617

Hi,

Are you changing interface of the block? If you change Interface then you need to replace old block call with new block call.

If you are changing Sub FC then to need to download that FC as well

Hope this helps.

Kbv

Hi STE39,

I compared it, it is different Time-stamp. I think that is not a problem.

Hi KBV,

What do you mean about "changing interface", I don't understand about it?

Could you explain more about it for me.

Thank you very much!

trinhvankieu

Hi KBV,

What do you mean about "changing interface", I don't understand about it?

Could you explain more about it for me.

Thank you very much!

 hi,

changing the block interface means changing or adding/removing inputs or outputs of the block interface. 

regards,

HI,

I didn't change interface, I just modified the main FC and downloaded Main FC and DBs relation to the FC. But sub FC is using the value from DB error not working after i downloaded.

I don't know how the DB error effects to Sub FC and made the Sub FC can not work.

Best Regard!

hello,

What do you mean by DB related to FC. there is no DB related to FC. FC do not need DB to store its data so you do not need to download DB when FC is changed. Unless you really change DB.

What changes have you done in DB and FC?

Hope that helps.

Hi KBV,

Because in our project, the input and output of the FC are token from DB (not for storage). So if i change the FC i must download DB and FC, if not the FC cannot run.

But now the DB is error stamp time, i already downloaded DB and FC, but FC still not run.

If i open the error DB and save the DB, then change FC and download FC and DB, FC will Run well.