If you question about this topic
http://cq.cx/ladder-forum.pl?action=viewthread&parent=3084.
In that case "Formatted String Over UART" element uses too much memory.
You can reduce the amount of "Formatted String Over UART" or
reduce the String argument of "Formatted String Over UART".
I plan remake "Formatted String Over UART" element.
Or clarify your question.