Using The Serial Terminals; Examples Of Connection; Pin Assignments And Signal Names; Communication Conditions (Factory Setting) - Panasonic PT-D7700U Operating Instructions Manual

Using the serial terminals

The main unit is equipped with SERIAL terminals located in its terminal section on the side, and this terminal is
compliant with RS-232C. Also a serial output terminal is provided to enable plural projector control.

Examples of connection

Single projector
<Terminal section on projector side>
D-Sub 9-pin (female)
RS-232C (G) RS-232C (G)
IN
RS-422 (R) RS-422
D-Sub 9-pin (male)

Pin assignments and signal names

D-Sub 9-pin (female),
external appearance
Serial input terminal

Communication conditions (Factory setting)

Basic format

Transmission from the computer begins with STX, then the ID, command, parameter, and ETX are sent in this
order. Add parameters according to the details of control.
(1 byte)
Attention • No command can be sent or received for 10 to 60 seconds after the lamp starts lighting. Try
sending any command after that period has elapsed.
• When sending several commands, be sure to wait for a response from the projector before sending
the next command. When sending commands without parameters, a colon (:) is not necessary.
Note
• When the wrong command is sent, the "ER401" or "ER402" status is sent from the projector to the
personal computer.
• Projector ID supported on the RS-232C interface is ZZ (ALL) and a group of 1 to 64 and 0A to 0Z.
• If a command is sent with a projector ID specified, the projector will return answer back only in the
following cases:
76
PC
OUT SERIAL
(R)
Communication cable
Pin No. Signal name Description
TXD Send data
RXD Receive data
Connected internally
GND
CTS
Connected internally
RTS
Signal level
Synchronization method
Baud rate
Parity
Character length
Stop bit
X parameter
S parameter
STX A D I 1 I 2
(2 bytes)
Two ID
characters
(2 bytes)
Start ZZ, 1 to 64 and 0A to 0Z
ID designate
If it coincides with the projector ID,
ID specification is ALL and VPS-SYSTEM is the master, or
ID specification is group and Group is the master.
Plural projectors
<Terminal section on Projector 1> <Terminal section on Projector 2>
D-Sub 9-pin
(female)
PC
RS-232C (G)
RS-422
D-Sub 9-pin
(male)
Communication cable
D-Sub 9-pin (male),
external appearance
NC
Ground
NC
Serial output terminal
NC
RS-232C-compliant
Start-stop synchronization
9 600bps
; C1 C2 C3 :
Colon
Semicolon
(1 byte)
(1 byte)
3 command
characters (3 bytes)
D-Sub 9-pin D-Sub 9-pin
(male) (female)
RS-232C (G)
RS-232C (G)
IN
OUT SERIAL RS-422
(R) RS-422 (R)
D-Sub 9-pin
D-Sub 9-pin
(male)
(female)
Communication cable
Pin No. Signal name
RXD
TXD
GND
RTS
CTS
None
8 bits
1 bit
None
None
P1 P2 Pn ETX
End
(1 byte)
Parameter
(undefined length)
D-Sub 9-pin
(male)
RS-232C (G)
IN
OUT SERIAL
(R) RS-422 (R)
Description
NC
Receive data
Send data
NC
Ground
NC
Connected internally
NC