I'll say it again. You have a PLC available for you to experiment on. Use it!
For those who claim there is no such thing as a stupid question I say this. The stupid question is the one you ask when have the ability to answer it yourself but are too lazy to do so.
Now, to answer your latest question. You must use a different %R register at the PARM node of your SVC_REQ function with code #14 depending on whether you want to clear the controller fault table or the I/O fault table. For the controller fault table you must use an even-numbered %R address. For the I/O fault table you must use an odd-numbered %R address. That is because even-numbered %R addresses can only contain even integer values while odd-numbered %R addresses can only contain odd integer values.
If you persist in asking questions that you could easily answer for yourself, I will begin to furnish answers like the preceding paragraph, but I won't include a disclaimer like this to indicate that my response should not be taken seriously. You have been warned.