RS-232C interface

1. Introduction

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

(See command table on page 79 – 81.)

(2) Conditions for acknowledging commands from RS-232C interface

The front panel REMOTE/LOCAL switch must be at REMOTE.

The setup menu item 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”.

2. Hardware specifications

External interface specifications

1) Connector specifications

Connector: D-SUB 25-pin (crossover cable supported)

Pin No. Signal Circuit name

1

FG
Protective ground
2RXD
Received data
3TXD
Transmitted data
4CTS
Clear to send
5
RTS
Request to send
6
DTR
Data terminal ready
7
SG
Signal ground
20
DSR
Data set ready

2)

Example of connection with controller (PC)

Using crossover cable with D-SUB 25-pin

connectors

PC side
(D-SUB 25-pin

connector)

FG 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
SG 7
DTR 20
VTR side
1
FG
2
RXD
3
TXD
4
CTS
5
RTS
6
DTR
7
SG
20
DSR
Description
Frame ground
Data is sent to PC.
Data is received from PC.
Shorted with pin 5.
Shorted with pin 4.
No processing
Signal ground
+ voltage output after communication enable status

Using crossover cable with D-SUB O-pin and

25-pin connectors

PC side
(D-SUB 9-pin
connector)
RXD
2
TXD
3
DTR
4
SG
5
DSR
6
RTS
7
CTS
8
VTR side
1
FG
2
RXD
3
TXD
4
CTS
5
RTS
6
DTR
7
SG
20
DSR
-76-