Omron SYSMAC C Series User Manual page 40

Checking and running your program
If you still have our sample program in the CPU memory, this should be
the display. Then, to go to the next contact with the same number, again
press
The display now changes to the next address containing an instruction
with the same contact number (the four digits at the lower right of the
display). This continues until the end of the program is reached.
If you want to search for a contact having a different contact number,
foliow the same steps as before. But this time, enter the numeric value of
the contact you want to locate.
Using our sample program, if you enter 1000 and press the search key,
the display will show the LD instruction in address 0001. This is how you
would do it:
ONT A R
The C20 gives you three convenient ways to search through a long
Search function summary
program for specific addresses, instructions, or contacts. The key entries
for these are summarized here:
Address search
(address) [e]
Specific instruction search
(instruction)
Specific contact search
on (contact number) | SRCH