7.6 Debugging Ladder Programs
7.6.6 Cross Reference Panes
7
Cr
eating U
s
er Pr
ogram
s
7-65
If the value of a register is different from its setting, it means that the value of the register may
have been overwritten somewhere in the program. In this case, you can search for the registers
using cross references. Check the registers displayed in red, and locate the program that is
overwriting them.
The following cross-reference criteria can be set. The following tables describe the check
boxes.
The following section describes the search operation on arrays.
1. Register [Register] Arrays
2. Register [Constant] Arrays
3. Register [Constant], LONG Arrays
Check Box
Search Method
Selected.
A search is made for local registers (D registers) in the active drawing in the MPE720
Window.
Not
selected.
A search is made for local registers (D registers) in the specified drawing.
Check Box
Search Method
Selected.
A search is made for registers that are the same as the register that was found.
Select this check box to display the results in a list when you search the following
instructions for a variable of MW00000.
Not
selected.
A search is not made for the same register and data type as the register that was
found.
Clear the selection of this check box to not display the results in a list when you
search the following instructions for a variable of MW00000.
Check Box
Search Method
Selected.
Searches for redundant addresses.
Select this check box to display the results in a list when you search the following
instructions with a variable with a different data type, such as ML00000.
Example
→
MW00000 and MW00001 are
s
ubject to
s
earching.
→
MW00000 and MW00005 are
s
ubject to
s
earching.
→
ML00000 and ML00010 are
s
ubject to
s
earching.
