Panasonic PT-TW343RE (serv.man5) Service Manual ▷ View online
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Serial control
Serial interface
The serial interface on the projector's interface board complies with the RS-232C interface specification and
therefore you can use a PC to control the projector by connecting a PC to the projector via the interface.
J
Connect
J
Pin layout and signal names
D-Sub 9 pin (female)
Outer appearance
Pin No.
Signal names
Description
⋌
⋏
⋇
⋋
—
NC
TXD
Data transmission
RXD
Data receiving
—
NC
GND
Grounding
—
NC
RTS
Internal connection
CTS
—
NC
J
Communication setup
Signal level
Compatible with RS-232C
Character length
8 bits
Sync mode
Async
Stop bit
1 bit
Baud
19,200 bps
X parameter
None
Odd even check
None
S parameter
None
D-Sub 9 pin (male)
D-Sub 9 pin (female)
Interface on the projector
PC
Communication cable
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Basic format
Data sent from PC is transmitted in the order of STX, instruction, parameter and ETX. Add parameters
according to the control details.
STX
C1 C2 C3
:
P1 P2
Pn
ETX
:
½
When the instruction sent has no parameter, no (:) is needed.
End
(one character)
Parameter
(the length is
uncertain)
Colon
(one character)
3 command
characters
(3 characters)
Start
(one character)
STX
C1 C2 C3
:
ETX
Basic format (with sub-command)
Same as the basic format
Sub-command (five characters)
Parameter (six characters)
"+" or "-" symbol (one character) and set
value or adjustment value (five characters)
Operate (one character)
"=" (set to the value specified by parameters)
*: Operation (E) and parameters are not needed when an instruction that does not need
parameters is transmitted.
S1
S2
S3
S4
S5
E
P1
P2
P3
P4
P5
P6
Serial control
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Serial control
J
Rounding specifications
[When connected to PC]
Projector
1
NC
NC
1
PC (DTE specifications)
2
2
3
3
4
NC
NC
4
5
5
6
NC
NC
6
7
7
8
8
9
NC
NC
9
J
Control instruction
Projector control instructions through PC are as follows:
[Projector control instruction]
Instruction
Control content
Description
PON
Enable power
POF
Disable power
IIS
Select input signal
(Parameter)
VID = video
SVD = S-video
RG1 = PC1
RG2 = PC2
CP1 = Y, Cb/Pb, Cr/Pr
HD1 = HDMI
MV1 = MEMORY VIEWER
UD1 = USB DISPLAY
NWP = NETWORK
QPW
Power status enquiry 000 = Standby
001 = Startup
Q$S
Lamp status enquiry
(Call back signal)
0 = Standby
1 = Lamp lighting control effect
2 = Lamp lighting
3 = Lamp off control effect
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Control Port Functions
Serial terminal I/O port functions (PW878)
PIN NO.
PORT NO.
Signal Name
Description
I/O
U18
PORTA0
EXTINT1
PHY break
O
T16
PORTA2
RST_RJ45
RJ45 network processing port is reset, low level is reset
O
R16
PORTA3
MONIT_OUT
Switch VGA2 input/output status: 0_input, 1_output
O
T17
PORTA4
IRIS_CW
IRIS direction control
O
R17
PORTA5
P_KEY
On/Off button input port
I
T18
PORTA6
IRIS_RST
IRIS reset control
O
R18
PORTA7
IRIS_CLK
IRIS clock control
O
B22
PORTB0
OEFID_IN
LVDS input selection
O
F19
PORTB1
KEY_GPIO9
Android module control
O
D20
PORTB3
GPIO9
Android module control
O
A22
PORTB4
MCU_HPD0
HDMI hot plug control
O
M6
INR4
ON_2_5V
PWC878_2.5V voltage enabled, high level effective
O
M1
INR6
CXD_MUTE
Close input
O
M5
INR7
OUT_DET_EXT
AUDIO_OUT check
I
K4
INR9
LAMP_ECO
LAMP mode check
I
L2
ING2
TEMP_LED
Warning status LED
O
K3
ING3
POWER_LED_PW
Power indicator control
O
J4
ING4
READY_LED_PW
Ready indicator status
O
L1
ING5
LAMP_EN
Lamplighter enabled
O
K6
ING6
LAMP_S
Lamplighter control status
O
K2
ING7
USB_HUB_EN
USB HUB enabled
O
J5
ING9
MCU_HDMI
HDMI EDID write-in control (H:write. L: protection)
O
J1
INB2
ON_1_8V
PWC878 1.8V voltage enabled, high level effective
O
H4
INB3
ON_1_0V
PWC878 1.0V voltage enabled, high level effective
O
H6
INB4
FANC_SW
Group C fan voltage control, high level, voltage output
O
H3
INB5
ON_3_3V
PWC878 3.3V voltage enabled, high level effective
O
H2
INB6
ON_15V
CXA3828_15V voltage enabled, high level effective
O
H5
INB7
FAN_SW
Fan voltage control, high level, voltage output
O
G2
INB9
ON_16V
-5V power enabled, high level enabled
O
M3
INR0
P_OE
PT2830 control (L:MUTE, H:active)
O
L5
INR1
ROM_WP
IC1013 write protection control
O
K5
ING0
MOTOR_POWER
IRIS power supply enabled
O
J3
INB0
ON_5V
USB 5V control, high level effective
O
J2
INB1
ON_1.0V_PW
Control PW878's 1V voltage. H: active
O
U19
PORTI0
GPIOA0_4
External Android board control interface
O
V20
PORTI1
GPIOA0_9
External Android board control interface
O
W21
PORTI3
LAMP_EN_SEL
Point-to-signal control
O
U20
PORTI4
IRIS_DET
IRIS detection
I
W22
PORTI5
AUDIO_POWER
AUDIO power enabling port (H: ACTIVE)
O
V21
PORTI6
GPIOA0_5
Android board control interface
O
D12
PORTJ0
RC_SEL_FRONT
Enable front remote control
O
A13
PORTJ1
RC_SEL_BEHIND
Enable rear remote control
O
D11
PORTJ2
RST_GAM
Initialize CXD3551
O
B12
PORTJ3
TC_XCLR
Initialize CXDA3828
O
C11
PORTJ4
SD_MCU
Amplifier SD enabled (L: MUTE,H:ACTIVE)
O
E11
PORTJ5
VDDMNT
CXA3828 drive voltage switch control
O
F11
PORTJ6
PS
POWER OR VCOMRGB SW
O
A12
PORTJ7
IRIS_STBY
IRIS standby control
O
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