Oki PT340 User Manual page 75

(4) Serial Interface Connector (Triple interface model)
Pin No. Signal Name
1 N.C
2 TXD
3 RXD
4 DSR
5
SG
6
DTR
7
CTS
8 RTS
9 N.C
Caution: Use a lock screw with an imperial thread on the connector.
Caution: Please use a RS232C 9 Pin straight cable for your interface
cable.
(5) Connection Cable(Triple interface model)
The connection setup shown in the following figure is recommended.
Host
1 DCD
2 RXD
3 TXD
4 DTR
5
6 DSR
7 RTS
8 CTS
9
Caution: Supplying power from the interface connector is prohibited.
Direction
-
Output
Input
Input
-
Output
Input
Output
-
FG <
<
<
<
<
SG <
<
<
<
RI <
Signal Line Name
No Connection
Transmit Data
Receive Data
Data Set Ready
Signal Ground
Data Terminal Ready
Clear to Send
Request to Send
No Connection
74
Printer
> FG
> N.C 1
> TXD 2
> RXD 3
> DSR 4
> SG 5
DTR 6
>
> CTS 7
> RTS 8
> N.C 9