Welcome to the OptoForums! I'd start with from 1701, the PAC Control Command Reference (click here). When you click the red "Download" button, that'll get you the PDF.
Also on that page, below under "Related Documents" you'll see [form 1700, the PAC Control User's Guide and [URL="http://www.opto22.com/site/documents/doc_drilldown.aspx?aid=3162"]form 1703, the PAC Control Commands Quick Reference](http://www.opto22.com/site/documents/doc_drilldown.aspx?aid=3165). Ben especially likes that quick reference and might even have it tattooed on his back.