JVC DLA-RS50, DLA-RS40, DLA-RS60 manual RS-232C Interface, RS-232C Specifications, TCP/IP-connection

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RS-232C Interface

It is possible to control this machine, if it is connected by an RS-232C cross cable (D-Sub9 pin) to a PC. Otherwise, this machine can be controlled via a computer network by connecting it with a LAN cable and sending of control commands. Please use it after you have understood this by reading professional books, or by discussing it with a system administrator.

RS-232C Specifications

This unit





Pin No.	Signal	Function	Signal Direction
2	RxD	Receive data	PC→This unit
3	TxD	Transmit data	This unit→PC
5	GND	Signal ground	-
1,4,6 - 9	N/C	-	-

●PC refers to the controller such as a personal computer.

Mode	Non-synchronous
Character Length	8 bit
				D0	D1	D2	D3	D4	D5	D6	D7
Parity	None
Start Bit	1
		Start	Bit								Stop Bit
Stop Bit	1
Data rate	19200 bps
Data format	Binary

TCP/IP-connection

Before you can control it via LAN, you have to establish a TCP-connection via a "3-way-handshake". It is necessary for a connection authentication to send from the projector "PJ_OK" and - within 5 seconds after sending a "PJREQ" – to receive "PJACK". Please perform this operation – after confirming the operating status of the projector - again after establishment of a TCP connection, if you cannot send within 5 seconds "PJ_NG" or could not receive "PJNAK".

Projector

Within 5 seconds

ＰＪ_ＯＫＰＪＡＣＫ

TCP-layer connection establishment TCP port number 20554 Three-way handshake

Control PC

Projector Control

ＰＪＲＥＱ

Connection authentication procedure

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