Panasonic AJ-SD955BE User Guide

72 (E)

CONTENTS

Software specifications (Protocol)

1. Communication parameters

RS-232C interface

Communication
system

Asynchronous, full duplex

Communication
speed

300/600/1200/2400/4800/9600

Bit length

7bit/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.

Communication

parameter

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

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

2. Send format

[controller (PC) 5 VTR]

Data format

[STX]

[command]

[:]

[data]

[ETX]

02h

XX XX XX

3Ah

XX.....XX 03h

20H<XX<7FH
(XX = ASCII code: symbols, numbers upper-case
letters)

[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] :

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

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.