Programming skills of Siemens S7-300

(1) Display the variable symbol table in the emulator

Try entering an address now: the symbol table is coming out!

(2) Single scan function of the emulator:

(3) Using OB35 to make a periodic clock pulse:

Because OB35 is a cyclic interrupt function, here we can use OB35 to make its own periodic clock pulse (a program that needs to be executed regularly in OB35 can also be used).

(4) Notes on communication settings in the CPU properties:

Note: When the number of devices actually connected is greater than the set number, the first connected device will automatically go offline.

(5) About the export of the symbol table (exported to the EXCEL format file):