JVC DLA-RS66 Manuel D'instructions page 72

External Control
It is possible to control this unit by connecting it to a PC using an RS-232C cross cable (D-sub 9-pin).
The projector can be controlled by connecting it to a PC through the computer network with a LAN cable for control
commands to be sent to the projector.
Please use it after you have gained proper understanding from professional books or consulting the system
0
administrator.
RS-232C Specifications
This Unit
1 5
2
3
6 9
5
1, 4, 6 - 9
PC refers to the controller, such as a personal computer.
0
D0 D1 D2 D3 D4 D5
Start bit
TCP/IP Connection
Before controlling via LAN, it is necessary to establish connection of the TCP layer by a "3-way handshake", followed
by sending out "PJREQ" and receiving "PJACK" within five seconds after the projector sends out "PJ_OK" for connection
authentication.
If you are unable to complete sending within five seconds, or when "PJ_NG" or "PJNAK" is received, check the operating
status of the projector, followed by performing the steps again starting from establishment of a TCP connection,
Projector
Establishment of TCP Connection
TCP Port No. 20554
3-way Handshake
Controlling PC
.
72
Pin No. Signal
RxD
TxD
GND
N/C
D6 D7
Stop bit
Within 5 Seconds
PJ_OK
PJREQ
Connection Authentication Procedure
Function
Receive data
Transmission data
Signal ground
—
Mode
Character length
Parity
Start bit
Stop bit
Data rate
Data format
PJACK
Projector Control
Signal Direction
PC " This unit
This unit " PC
—
—
Non-synchronous
8 bit
None
1
1
19200 bps
Binary