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RS-232C interface
The VTR can be operated by commands when the
RS-232C interface is used. (Refer to the command
tables on page 125 and 126.)
∫ Condition for acknowledging
commands from RS-232C interface
Setup menu item No.204 (RS232C SEL): ON
If
the
above
condition
[ACK]+[STX]ER001[EXT] is returned to the external
component. Whether [ACK] is returned depends on
the setting which has been selected for setup menu
item No.209 (RETURN ACK).
122
Hardware specifications
External interface specifications
• Connector pin specifications
Connector: D-SUB 25-pin
(crossover cable supported)
is
not
met,
Pin No.
• Example of connection with controller (PC)
(Using crossover cable with D-SUB 25-pin
connectors)
(D-SUB 25-pin connector)
(Using crossover cable with D-SUB 9-pin and D-
SUB 25-pin connectors)
(D-SUB 9-pin connector)
Signal
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
20
DSR
Data set ready (+ voltage output after
communication enable status)
PC side
FG
1
TXD
2
RXD
3
RTS
4
5
CTS
DSR
6
SG
7
DTR
20
PC side
RXD
2
TXD
3
DTR
4
SG
5
DSR
6
RTS
7
CTS
8
Description
VTR side
1
FG
2
RXD
3
TXD
4
CTS
5
RTS
6
DTR
7
SG
20
DSR
VTR side
1
FG
2
RXD
3
TXD
4
CTS
5
RTS
6
DTR
7
SG
20
DSR
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