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LC-W4 Basic Serial Command Functional Specifications

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3 Notes for Communication

3.1 The projector command is defined as one command / one line that starts with “C” and ends

with carriage return (0x0D).

3.2 There are two types of commands: Functional Execution Commands and Status Read

Commands.

Example of Functional Execution Command: “C05” [CR]

Example of Status Read Command: “CR0” [CR]

3.3 When it takes more than one second to receive one command, it is not executed.

When it takes more than one second until the projector receives carriage return since it has

received the first data “C”, it clears the information of buffer.

3.4 When executing the command pipelining, wait the interval of 100ms after the response.

More than 100ms

Command

PC ĺ Projector

“

”“

”

CR Next Command

Projector

→

PC ACK CR

Response

(a few ms

∼

5s)

When a command is issued before receiving the response, the function is not executed

properly. Except when there is no response for 5 seconds.

3.5 It takes about 5 seconds

for internal initialization after plugging in AC power until it moves to

Standby mode. During this time, it cannot process commands. Do not issue any command.

3.6 The number of characters of the response to Status Read Commands depends on commands.

Please refer to [7. Status Read Command].

3.7 Characters for commands must be Capital (A - Z).

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