RS-232 commands are dependent on your hardware/firmware version. Commands created after your model ships will require an upgrade to become accessible.
RS-232 Commands for CPN-5000
RS-232 Commands for PVI-4600
RS-232 Commands for PVI-83
RS-232 Commands for PVI-X90
RS-232 Commands for Input Port and Chalkboard Generation (PVI-X90)
PVI-40
PVI-44 Presenter
PVI-44 Broadcaster
PVI-46 Presenter (w/arrows)
PVI-46 PC
PVI-64
PVI-65
PVI-83 Presenter
PVI-83 Broadcaster
PVI-83 PC
PVI-X90 Presenter
PVI-X90 Broadcaster
PVI-X90 PC
PVI-PC20 Ver.1.7.0
AceCad Drivers
PC Controller 1.0
Pointmaker and AMX Modero Touchscreen files
Crestron Integration -- This links to Crestron's site.
Crestron Sample Screens -- This links to Crestron's site.