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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 111 – 113.)
(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 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
2) Example of connection with controller (PC)
■ Using crossover cable with D-SUB 25-pin ■ Using crossover cable with D-SUB 9-pin and
connectors 25-pin connectors
PC side
(D-SUB 25-pin
connector)
FG
TXD
RXD
RTS
CTS
DSR
SG
DTR
1
2
3
4
5
6
7
20
VTR side
FG
RXD
TXD
CTS
RTS
DTR
SG
DSR
1
2
3
4
5
6
7
20
PC side
(D-SUB 9-pin
connector)
RXD
TXD
DTR
SG
DSR
RTS
CTS
2
3
4
5
6
7
8
FG
RXD
TXD
CTS
RTS
DTR
SG
DSR
1
2
3
4
5
6
7
20
VTR side