JVC VR-510U manual 10 RS-232C Interface, Specifications, Protocols and commands,  Basic table

10 RS-232C INTERFACE

10-1 Specifications

9-pin connector specifications

Pin No.	Signal	Operation	Signal direction
3	TXD	Transmission data	DVR [ CPU	Output level
							1
2	RXD	Reception data	DVR p CPU			6
				OFF	: –5 V or less
				ON	: +5 V or more
6	DSR	Data set ready	DVR p CPU
						9
5	GND	Signal ground					5
4	DTR	Data terminal ready	DVR [ CPU

Data format

• Mode	: Non-synchronous
• Character length	: 8 bits
• Data rate	: 9600 bps	0(SPACE)	Start
• Parity check	: None		bit
• Stop bit	: 1	1(MARK)

D

0

D	D	D
1	2	3

D	D	D	D
4	5	6	7

Stop

bit

10-2 Protocols and commands

This section provides programming information needed to control the VR-510U via RS-232C.

Basic table

[Upper

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

[Lower

0

Data 0

ENTER

ALARM

FWD

1

COMPLETE

Data 1

CLEAR

ALARM

ERROR

REV

2

ERROR

Data 2

3

Data 3

4

Data 4

5

NOT

Data 5

FWD

TARGET

SHUTTLE

6

ALARM

Data 6

CLEAR

REV

JVC-1

IN

SHUTTLE

TABLE ON

7

Data 7

STATUS

STATUS

BASIC

SENSE

SENSE

TABLE ON

8

Data 8

9

Data 9

A

ACK

PLAY

REV

REC

REC

PLAY

REQUEST

B

NAK

FWD x3

REV x3

FF

VTR INQ

C

FWD x1/6

REV x1/6

REW

D

FWD

REV

FWD

STILL

STILL

STEP

E

FWD x15

REV x15

DATE SET

REV

DATE

STEP

SENSE

F

STOP

STILL

TIME SET

TIME

SENSE

40