Panasonic AJ-HD150FE Software specifications, Protocol, Communication parametres, Data format

•[ : ]:

•[data]:

RS-232C interface

3. Software specifications

Protocol

1) Communication parametres

Communication system	Asynchronous,	full duplex
Communication speed		300/600/1200/2400/4800/ 9600
Bit length	7 bit/ 8 bit
Stop bit		1 bit/2 bit
Parity bit		NONE/ODD/EVEN
ACK code		ACK code returned/ACK code not returned
		<Note>
		The ACK code is what is returned from the VTR to the controller when data has
		been successfully sent from the controller.

The underlining indicates the factory settings.

Any changes to the settings can be made using the setup menu items listed below.

	Communication parametre			Setup	menu item
	Communication speed		No. 205		BAUD RATE
	Bit length			No. 206 DATA LENGTH
	Stop bit				No. 207 STOP BIT
	Parity bit				No. 208 PARITY
	ACK code			No. 209 RETURN ACK
2) Send format [controller (PC)			→	VTR]
	■ Data format
	[STX] [command] [:]	[data]		[ETX]
	02h XX XX XX 3Ah XX-XX	03h			← (ASCII code: symbols, numbers upper-case letters)

20h<XX<7Fh

•[command]: Command identifier; a 3-byte identifier (ASCII code: symbols, numbers, upper-case letters) is sent as the command.

This code serves as a delimiter between the command and data.

Data (ASCII code: symbols, numbers, upper-case letters) can be added in the number of bytes required.

■Outline of send procedure from controller

1.The send command starts with STX (start of text = 02h). The command is then identified by COMMAND which follows and the data is added as required.

The format ends with ETX (end of text = 03h).

2.When a different command is to be sent, a response is awaited from the VTR, and then the command is sent. (See page 110.)

3.If STX is sent again before ETX is sent, the receive data buffer inside the VTR is cleared. A command error is returned to the controller, and the data is newly processed with STX which was received again at the head.

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