LV7565_Basic_Command_Specification

Basic Serial Command Specification Page 6 of 20
6. Functional Execution Command
6.1. Format
(1) PC sends a command as below format.
“C” Command [CR]
Command : 2 characters (See Functional Execution Command Table)
(2) A projector changes receiving data to decode and send a return result after being ready
to receive next command.
[ACK] [CR] : (0x06, 0x0D) When a projector receives a functional execution command.
“?” [CR] : When cannot read receiving data
6.2. When the command pipelining is needed
When some functions need command pipelining, the performance is the same as the remote
control’s performance.
In other words,
(1) System: issue commands every 100ms
(2) When receiving any relevant command, the function is executed continuously for 120ms.
(3) When receiving the same command continuously with 120ms, the function is executed
for 120ms from that moment.
(4) After 120ms, the next command is not issued, the execution is stopped.
(5) If the projector receives other incoming commands within 120ms, the execution is
stopped.
6.3. Transfer Example
Change to Video mode with Basic Command
Command
PC ! Projector “C” “0” “7” CR
Projector ! PC ACK CR
Command processing
(A few ms --- 1s)
6.4. Necessary Condition for Operation
When the Projector‘s status in this below, functional execution commands and state read
commands are limited.
Projector Status Available Functional Execution Commands
Standby Mode C00: POWER ON
Processing Countdown
C00: POWER ON ! Terminate Processing
Countdown
C01: POWER OFF
C02: POWER OFF ! Terminate Processing
Countdown
C46: ZOOM –
C47: ZOOM +
C4A: FOCUS –
C4B: FOCUS +
C5D: LENS SHIFT +
C5E: LENS SHIFT –
Note) When executing ZOOM+/-, FOCUS+/-.
LENS SHIFT+/- during Countdown,
C3C/C3D that are Pointer UP/DOWN will