Sfc20

Hi,
I'm trying to place SFC20 in my program but I get the error message:

"Cannot place block"


With the following help message:

"Help on Message 30:498 Description of Error:
The block cannot be inserted. Possible causes are:
· You are working online and the block you want to insert does not yet exist online.
· You want to insert a system function (SFC) or system function block (SFB) which come from a program library whose project version does not match the version of the current project.
· Organization blocks (OBs) cannot be interconnected using this application.
To Correct or Avoid Error:
· Download the missing block to the programmable controller.
· Use program libraries with the correct project version."


I'm using S7 5.4, and am working offline.
Any ideas?
Thanks
Matt

How are you trying to "place" SFC20 ?

Are you:
typing CALL SFC20 in STL,
ALT F9 in ladder then typing SFC20
Dragging the block from the library into your project ?

L D[AR2 said:

How are you trying to "place" SFC20 ?

Are you:
typing CALL SFC20 in STL,
ALT F9 in ladder then typing SFC20
Dragging the block from the library into your project ?

Click to expand...

I was dragging it across from the library into a ladder rung.

I just tried the other method you mentioned (Alt F9 then typing SFC20) and that seems to work fine.
Thanks.

Which library were you using ?

stdlibs is for v2 of Step7
Standard Library is the one to use.

Yep. I was using the stdlibs:doh:
Just tried dragging form the Standard Library - works perfect.

By the way in your example of a SFC20 from a previous post where you had "P#DB1.DBX0.0 BYTE64" as the SRCBLK, what does the P# mean?

Thanks.

P# means "pointer to"