The Full text of Memorandum Circular No. 200-01 may be downloaded from the Napolcom website here.
Unfortunately, the above-cited link seems to have some problems. I once saved the pdf file on my computer but I would always received some Acrobat reading problems when I access the file.
Here's a document format for the PNP Disciplinary Rules of Procedure. Download it here.
You can also read the full text online at ArnanaLawOffice site.
For a more thorough discussion about these rules, including Summary Hearing Guides, please read the PNP Manual.