Eaton easySafety Manual page 160

Wiring with easySafety
156
h As every standard function block in the function block list
takes up memory, even if it is no longer being used and
has been deleted in the standard circuit diagram, you
should clear it occasionally.
Check the standard function block diagram for any
function blocks that are no longer required and delete
them, a section "Deleting function blocks", page 170.
h
Caution!
RUN mode: easySafety processes the function blocks after
the circuit diagram has been run through. This takes the
last status of the coils into account.
h
The function blocks are designed so that an output value
of a function block can be assigned directly with an input
of another function block. The 32-bit data format is used
automatically. This also enables the transfer of negative
values.
02/16 MN05013001Z EN