Denon DVP-602CI Serial Protocol - Page 4

V.5.6.0 Protocol specification The following three data forms are defined. COMMAND : The message sent to a system(DVP-602CI) from a controller(Touch Panel etc.) A command to a system is given from a controller. EVENT : The message sent to a controller(Touch Panel etc.) from a system(DVP-602CI) The result is sent, when a system is operated directly and a state changes. *The form of EVENT presupposes that it is the same as that of COMMAND. **Refer to the following table for the contents of COMMAND and EVENT. RESPONSE : The message sent to a controller(Touch Panel etc.) from a system(DVP-602CI) if the 'request command' (COMMAND+?+CR(0x0D)) has came from a controller. The RESPONSE should be sent within 200ms of receiving the COMMAND. *The form of RESPONSE presupposes that it is the same as that of EVENT. Basic specification : The command by ASCII CODE, parameter expression *ASCII CODE which can be used is from 0x20 to 0x7F : the alphabet and the number of 0-9 , and space (0x20) , Some signs , AND carriage return(0x0D)--- It is used only as a pause sign. Command structure : COMMAND + PARAMETER + CR(0x0D) COMMAND : ASCII CODE of 2 characters ex. SI : Select Input source PW : system PoWer setting PARAMETER : ASCII CODE ( up to 25 characters) ex. HDMI1 : function name COM1 : function name *Special Parameter--- ? : for request command - 4 -