s7-300 compiling error

[sztofel]

Hello!

I have encountered strange error while compiling step7 project for s7-300.
this error occurs in DataBlock compiling.
compiler says

"W Ln 000007 Col 006: No valid offline ASCII type description found for called or adressed block UDT1"
and
"E Ln 000007 Col 006: No PLC type description found for called or addressed block UDT 1"

What does it mean ? should there be any PLC description in DB connected with counter module?

 

[Mike_RH]

The DB is referencing UDT1 and the definition for it is missing.

 

[sztofel]

You are right, thank you very much!
Do you know maybe if it is possible to reconstruct UDT1 when I know DataBlock associated with it?
I mean are the UDT1 references in DB somehow different than the "standard" DB entries, so I can recreate UDT1 ?
My task is to complete program downloaded from PLC.
In this project counter FM350-2 has been used, and DB associated with counter calls UDT1 so its probably for handling 64bit numbers.