Hi Everybody:

Something funny is happening when we insert FC's from S5-S7 Converting Blocks (Specifically

FC104, FC106, FC107 & FC108). It seems that whenever you insert a block from this library,

the system is assigning memory (M, MW, MD) even when you haven´t filled the block parameters

(they are still in red) because if you go to reference data you see that there are memory blocks

already assigned like when you fill the block parameters. This usually doesn't happen with other

FC's. Have you ever seen a behavior like this? Why this happens with certain blocks?

Regards

Hi MemoGG,

Good catch!

The blocks you have mentioned (FC104, FC106, FC107 & FC108) do useflag memory in thearea MB200 to MB255. Theonly explanation I can think of is, these blocks were converted from S5. Inthe S5 world it was an "unwritten rule" to use MB200 to MB255 as "scratch flag area" and many standard blocks wereprogrammed using this area.The right way would have been to replace this M area with temp area (S7)during S5 to S7 conversion...

Sowhen using blocksfrom theS5-S7 Converting Blocks librarywe should not use flag memory from MB200 to MB255 in our user program. Any memory lower or higher than this area is ok to use.

May be we should mark this thread as a tip.

Regards

Sorry for the delay to thank your replies. Actually we discover the problem by accident!
(many great inventions have been done that way) I agree that if possible it is better not to
use those blocks from the s5-s7 conversion library and if it is the last resource, keep in
mind the addresses used by them.

Regards