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15.0 MISCELLANEOUS
R699820 - Yunzi Series User Manual 41
RS-232C pin assignation
Command Format
When sending a command to this unit, use the following data format:
Available Operating commands
Baud Rate 19200 bps
Data Format Binary
Mode Asynchronous
Character Length 8 bits
Parity None
Start Bit 1 bit set to high
Stop Bit 1 bit set to low
X on/off None
Flow Control None
Pin Signal Function Signal Direction
2 RxD receive data PC -> Projector
3 TxD transmit data Projector-> PC
5GND ground -
1,4,6-9 N/C - -
Header Unit ID Command Data EoD
1 byte 89h 01h 2 bytes at least 1 byte 0Ah
Header (21h): Operating command. PC -> Projector
(3Fh): Reference command. PC -> Projector
(40h): Response command. Projector -> PC
(06h): ACK. Projector -> PC
Unit ID Fixed to (89 h 01h)
Command 2 bytes. See the list of the available commands below.
If Command code is “52h 43h”, the Data sent may also be sent to the
projector by a programmable RCU using NEC 5 protocole.
Data Data lenght may vary
EoD Fixed to (0Ah)
Header (21h) Command Data Description
Connection RS-232 00h 00h none Check the serial connection
Power ON 50h 57h 31h If the projector is in stand-by mode, this command
switch the unit ON.
Power OFF 50h 57h 30h If the projector is powered ON, this command
switches this unit into Stand-by Mode.
Switch Input 49h 50h 32h Switch active input to Component
33h Switch active input to VGA
36h Switch active input to HDMI 1
37h Switch active input to HDMI 2
2Bh Switch to next input
2Dh Switch to previous input
Gamma 47h 54h 30h Set Gamma to Normal
31h Set Gamma to A
1
6
5
9
41


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