RS-232C interface

The VTR can be operated by commands when the RS-232C interface is used.

(See command table on pages 72, 73.)

$ Conditions for acknowledging commands from RS-232C interface

OThe front panel CONTROL switch must be at

REMOTE.

OThe setup menu No. 204 “RS232C SEL” must be ON.

If the above conditions are not met, [ACK] + [STX] ER001 [EXT] is returned to the external unit. Whether the [ACK] code is returned depends on the setting which has been selected for setup menu item No. 209 “RETURN ACK”.

Hardware specifications

External interface specifications

OConnector specifications

Connector:

D-SUB 25-pin (crossover cable supported)

Pin No.

Signal

Description

 

 

 

1

FG

Protective ground

 

 

(Frame ground)

 

 

 

2

RXD

Received data

 

 

(Data is sent to PC.)

 

 

 

3

TXD

Transmitted data

 

 

(Data is received from PC.)

 

 

 

4

CTS

Clear to send

 

 

(Shorted with pin 5.)

 

 

 

5

RTS

Request to send

 

 

(Shorted with pin 4.)

 

 

 

6

DTR

Data terminal ready

 

 

(No processing)

 

 

 

7

SG

Signal ground

 

 

(Signal ground)

 

 

 

20

DSR

Data set ready (+ voltage output after

 

 

communication enable status)

 

 

 

OExample of connection with controller (PC) Using crossover cable with D-SUB25-pin connectors

PC side

 

 

 

 

 

(D-SUB 25-pin connector)

VTR side

 

 

 

 

 

 

FG

1

 

1

FG

 

TXD

2

 

2

RXD

 

RXD

3

 

3

TXD

 

RTS

4

 

4

CTS

 

CTS

5

 

5

RTS

 

DSR

6

 

6

DTR

 

SG

7

 

7

SG

 

DTR

20

 

20

DSR

 

 

 

 

 

 

 

 

 

 

 

 

 

Using crossover cable with D-SUB 9-pin and 25-pin connectors

PC side

 

 

 

 

 

(D-SUB 9-pin connector)

VTR side

 

 

 

 

 

 

RXD

2

 

1

FG

 

TXD

3

 

2

RXD

 

DTR

4

 

3

TXD

 

SG

5

 

4

CTS

 

DSR

6

 

5

RTS

 

RTS

7

 

6

DTR

 

CTS

8

 

7

SG

 

 

 

 

20

DSR

 

 

 

 

 

 

 

 

 

 

 

 

 

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