Rs-232C Interface; Hardware Specifications - Panasonic AJ-D440 Operating Instructions Manual

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 60 – 62.)
(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[ETX] 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 (straight cable supported)
Pin No. Signal
1 FG
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
20 DTR
2) Example of connection with controller (PC)
Using straight 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
Circuit name
Protective ground
Transmitted data
Received data
Request to send
Clear to send
Data set ready
Signal ground
Data terminal ready
VTR side
1 FG
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
20 DTR
– 57 –
Description
Frame ground
Data is received from PC.
Data is sent to PC.
Shorted with pin 5.
Shorted with pin 4.
+ voltage output after communication enable status
Signal ground
No processing
Using straight cable with D-SUB 9-pin connectors
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 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
20 DTR