JVC PC007182399-1 warranty RS-232C Interface, RS-232C Specifications, Command Format

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RS-232C Interface

Control of this unit via a computer is possible by connecting the computer to this unit with a RS-232C cross cable (D-Sub 9 pin).

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
Parity	None
			D0	D1	D2	D3	D4	D5	D6	D7
Start Bit	1
Stop Bit	1	Start Bit								Stop Bit
Data rate	19200 bps
Data format	Binary

Command Format

The command between this unit and the computer consists of “Header”, “Unit ID”, “Command”, “Data” and “End”.

●Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte)

■Header

This binary code indicates the start of communication.

Binary code	Type	Description
21	Operating command	PC→This unit
3F	Reference command	PC→This unit
40	Response command	This unit→PC
		This unit→PC
06	ACK	(When the command is accepted without error, it returns to
		PC)

■Unit ID

This code specifies the unit. The binary code is fixed at “8901”.

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