Siemens Simatic S5-101U - Page 9

Input as LAD and dis~lav as CSF (STL)
Rule: Do not exceed the display
boundaries for LAD.
Excessive nesting may cause the LAD
display boundary to be exceeded
(8 levels)
max .4
Example of maximum LAD nesting for display as CSF
Input as CSF and display as LAD
(STL)
Rule 1: Do not exceed the display
boundaries for LAD.
Too many inputs on a CSF box cause
the
l adder diagram display boundary
to be exceeded.
CSF
Fig. 11: Example of a maximum AND box in CSF form for display as an LAD