User manual

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

5 GND 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