PLC-WM5500/WM5500L Basic Serial Command Functional Specifications6/283. Notes for CommunicationThe projector command is defined as one command per line that starts with “C” and ends withcarriage return (0x0D).When carriage return (0x0D) is received, decoding starts.There are two types of commands; Functional Execution Commands which function in a waycomparable to remote and console keys and Status Read Commands which get basic statusesof projector.Example of Functional Execution Command: “C05” [CR]Example of Status Read Command: “CR0” [CR]In the cases below, it clears information of receive buffer.1) When LF (0x0A) and EOF (0x1A) are received2) When it takes more than a second to receive one command (until the projector receivescarriage return since it has received the first data)The pipelining of Functional Execution Command, allow the following interval time after receivingreturn value.1) Commands “VOLUME +/-“, “ZOOM UP/DOWN”, “FOCUS UP/DOWN” and “LENS-SHIFTUP/DOWN/RIGHT” --> 100ms2) Other commands --> 500msFor the pipelining of Status Read Command, allow more than 500 ms of interval time afterreception of return value.Do not send any subsequent command before reception of return value; however this is not thecase when no response is returned after more than 5 seconds.It takes about 7 seconds for internal initialization after plugging in AC power. During this time, itcannot process commands. Do not issue any command.During 7 seconds after powering on in Standby mode, when the command for internalinitialization or lamp lighting is received, ACK value is returned but the function is not executed.However, for Status Read Command, the function is executed in 500 ms after receiving ACKvalue for POWER ON command.During countdown and cooling operations:During countdown operation after execution of power-on, as well as during cooling operation afterexecution of power-off, ACK value is returned but the function is not executed when command isreceived.On switching INPUT:During 5 seconds after switching action has started in response to reception of INPUT switchingcommand, ACK value is returned but the function is not executed when command is received.However, for Status Read Command, the function is executed in 500 ms after receiving ACKvalue for INPUT switching command.The number of characters indicating successful reception of command varies according to thecommand. Please see [7. Status Read Command].Characters used for commands must be Capital (A - Z).