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131
RS-232C interface
The VTR can be operated by commands when the RS-232C
interface is used. (Refer to the command tables on page
134.)
_Condition for acknowledging commands
from RS-232C interface
Setup menu item No.204
(RS232C SEL) ON
If the above condition is not met,
[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).
Hardware specifications
External interface specifications
zConnector pin specifications
Connector: D-SUB 25-pin
(crossover cable supported)
z Example of connection with controller (PC)
(Using crossover cable with D-SUB 25-pin connectors)
(Using crossover cable with D-SUB 9-pin and D-SUB 25-
pin connectors)
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
20
DSR Data set ready (+ voltage output after
communication enable status)
FG
TXD
RXD
RTS
CTS
DSR
SG
DTR
1
2
3
4
5
6
7
20
FG
RXD
TXD
CTS
RTS
DTR
SG
DSR
1
2
3
4
5
6
7
20
PC side
(D-SUB 25-pin connector)
VTR side
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
PC side
(D-SUB 9-pin connector)
VTR side