Sanyo PDG-DHT8000L RS232C Expand - Page 11
Notes for communication, Command
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PDG-DHT8000L Expand Serial Command Functional Specifications 3 Notes for communication Expand Serial Command is defined as a single command per line that starts with "C" and ends with carriage return (0x0D). When a projector receives carriage return (0x0D), it starts decoding. There are two types of commands as below: Example of Functional Execution Command:"CF_BRIGHT_032" [CR] Example of Status Read Command: "CR_BRIGHT" [CR] Note) "_" indicates a space It clears the information of buffer in the following cases: - when the projector receives LF (0x0A) or EOF (0x1A). - when it takes more than one second to receive a single command (Until receiving the carriage return after the reception of the first data) The projector processes the command and returns the response within a few ms to 8000 ms after the reception of the command. When several commands are sent in succession, do not send another command unless the response to the previous command has been returned. Need to confirm that the processing of the current command has been completed and returned the response before sending another command. Command PC Projector "CF_BRIGHT_032" [CR] Projector PC "000" [CR] Command processing Response (A few ms - 8000 ms) Note) when the computer sends another command before the previous response has been returned, the projector may not operate properly. Note) when the current command processing has not completed, another command process can not be accepted by the projector Normally it is less than 1000ms for the completion of receiving a command and returning the response, but it takes more than 1000ms for some Functional Execution Commands as listed below: Command CF_IMAGE CF_INPUT CF_SCREEN CF_SYSTEM CF_INPUT1 CF_INPUT2 CF_INPUT3 CF_INPUT4 CF_IMAGEADJ Item Select Image Mode Select Input Select Screen Size Select System Select Input 1 and Signal (concurrent execution) Select Input 2 and Signal Select Input 3 and Signal Select Input 4 and Signal Reset/Store for Image Adjustment It takes about 8 seconds for internal initialization after plugging in AC power. During this time it cannot process commands. Do not issue any command. 11/101